WO2018184223A1

WO2018184223A1 - Method and device for video compression processing

Info

Publication number: WO2018184223A1
Application number: PCT/CN2017/079772
Authority: WO
Inventors: 刘建桥; 杨雄; 谭喆
Original assignee: 深圳中兴力维技术有限公司
Priority date: 2017-04-07
Filing date: 2017-04-07
Publication date: 2018-10-11

Abstract

Related to the technical field of video storage, disclosed are a method and device for video compression processing. The method comprises: receiving a video stream; selecting a frame extracting mode and a frame extracting level on the basis of a preset criterion; writing the video stream into a video file according to the frame extracting mode and the frame extracting level, thus greatly increasing the number of write paths for video recording storage concurrency. In addition, when the video file is written into a storage, a frame extracting mode and a frame extracting level can be selected on the basis of a storage space state and bandwidth state for the frame extracting storage of the video recording, thus conserving storage space and conserving bandwidth.

Description

Invention name: A video compression processing method and device

Technical field

[0001] The present invention relates to the field of video storage technologies, and in particular, to a video compression processing method and apparatus.

Background technique

[0002] The existing video storage for video surveillance is divided into full frame rate storage and video frame collection storage. For video recording, full frame rate stored video recording has higher frame rate and image details. , Framed storage can save storage space by reducing frame rate and save bandwidth. The arrival of high-definition surveillance has led to a significant increase in the cost of the entire video surveillance system. In particular, the cost of storage devices has risen dramatically. Therefore, how to balance video quality and save storage costs is a problem that needs to be discussed. Existing storage The device is a code stream acquired from the camera, and stores video recording at a full frame rate, and is not capable of dynamic frame drawing for the video file.

technical problem

[0003] The main purpose of the present invention is to provide a video compression processing method and apparatus, which can select a frame drawing mode and a frame drawing level by storing a space condition and a bandwidth condition, and store video frames in a framed manner, thereby saving storage space and saving. bandwidth.

Problem solution

Technical solution

[0004] In order to achieve the above object, a video compression processing method provided by the present invention includes:

[0005] receiving a video code stream;

[0006] selecting a frame drawing mode and a frame drawing level according to preset conditions;

And storing the video code stream according to the frame drawing mode and the frame drawing level.

Optionally, the frame drawing mode includes: a frame extraction frame and a spatial frame extraction, where the frame extraction level includes: a base layer and a plurality of enhancement layers.

[0009] Optionally, when the preset condition is an I/O bandwidth performance of the storage disk, the selecting the frame drawing mode and the frame drawing level according to the preset condition include:

[0010] obtaining I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed; [0011] calculating a product of the number of storage channels of the video code stream and a code rate;

[0012] determining whether the product is smaller than the maximum write speed of the I/O, and if yes, performing full frame rate storage on the video code stream;

[0013] Otherwise, selecting a frame drawing mode according to a preset rule, and calculating a write code rate of each video according to the I/O maximum write speed and the number of storage paths, and selecting a pumping according to the write code rate Frame level.

[0014] Optionally, when the preset condition is a user bandwidth and a user request concurrency quantity, the selecting the frame drawing mode and the frame drawing level according to the preset condition include:

[0015] determining whether the concurrent request volume of the user is greater than the uplink bandwidth;

[0016] If yes, the frame selection mode is selected according to a preset rule, and a transmission code stream of each video is calculated according to the uplink bandwidth and the number of request paths, and the frame extraction level is selected according to the transmission code stream.

[0017] Optionally, when the preset condition is a storage space occupancy, the selecting the frame drawing mode and the frame drawing level according to the preset condition includes:

[0018] determining whether the storage space occupancy rate is less than a preset occupancy rate, and if yes, performing full frame rate storage on the video code stream;

[0019] Otherwise, the video file in the storage space is framed and re-stored.

[0020] As another aspect of the present invention, a video compression processing apparatus is provided, including: [0021] a code stream receiving module, configured to receive a video code stream;

[0022] a frame drawing module, configured to select a frame drawing mode and a frame drawing level according to a preset condition;

[0023] a storage module, configured to store the video code stream according to the frame drawing mode and the framed frame level.

[0024] Optionally, the frame drawing mode includes: a frame extraction frame and a spatial frame extraction, where the frame extraction level includes: a base layer and a plurality of enhancement layers.

[0025] Optionally, when the preset condition is an I/O bandwidth performance of the storage disk, the frame drawing module includes

a first obtaining unit, configured to acquire I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed;

[0027] a first calculating unit, configured to calculate a product of a storage path number and a code rate of the video code stream;

[0028] The first determining unit is configured to determine whether the product is smaller than the maximum write speed of the I/O, and if yes, perform full frame rate storage on the video code stream; [0029] a first frame unit, configured to: when the product is not less than the I/O maximum write speed 吋, select a frame drawing mode according to a preset rule, and according to the I/O maximum write speed and the The number of storage paths calculates the write code rate of each video, and the frame draw level is selected according to the write code rate.

[0030] Optionally, when the preset condition is user bandwidth and user request concurrency, the frame drawing module includes:

[0031] The second determining unit is configured to determine whether the concurrent request volume of the user is greater than an uplink bandwidth;

[0032] a second frame-splitting unit, configured to: when the user requests that the concurrent quantity is greater than the uplink bandwidth, select a frame-splitting mode according to a preset rule, and calculate a transmission code stream of each channel according to the uplink bandwidth and the number of request channels, The framed level is selected according to the transmitted code stream.

[0033] Optionally, when the preset condition is a storage space occupancy, the frame drawing module includes:

[0034] The third determining unit is configured to determine whether the storage space occupancy rate is less than a preset occupancy rate, and if yes, perform full frame rate saving on the video code stream;

[0035] The third frame drawing unit is configured to perform frame extraction and re-storing of the video file in the storage space when the storage space occupancy rate is not less than a preset occupancy rate.

[0036] The present invention provides a video compression processing method and apparatus, the method comprising: receiving a video code stream; selecting a frame drawing mode and a frame drawing level according to a preset condition; according to the frame drawing mode and the frame drawing Level writing the video file to the video stream, greatly improving the number of concurrent writes of the video recording storage. In addition, after the video file is written and stored, the frame mode and the frame drawing can be selected through the storage space condition and the bandwidth condition. Level, to store video frames for video recording, saving storage space and saving bandwidth.

Advantageous effects of the invention

Beneficial effect

[0037] The present invention provides a video compression processing method and apparatus, the method comprising: receiving a video code stream; selecting a frame drawing mode and a frame drawing level according to a preset condition; according to the frame drawing mode and the frame drawing Level writing the video file to the video stream, greatly improving the number of concurrent writes of the video recording storage. In addition, after the video file is written and stored, the frame mode and the frame drawing can be selected through the storage space condition and the bandwidth condition. Level, to store video frames for video recording, saving storage space and saving bandwidth.

Brief description of the drawing

DRAWINGS 1 is a flowchart of a video compression processing method according to Embodiment 1 of the present invention;

2 is a schematic diagram of selection of a frame drawing mode according to Embodiment 1 of the present invention;

3 is a schematic diagram of selecting a frame selection level of a domain according to Embodiment 1 of the present invention;

4 is a schematic diagram of selecting a spatial domain frame selection level according to Embodiment 1 of the present invention;

5 is a flowchart of a video compression processing method according to Embodiment 2 of the present invention;

6 is a flowchart of a video compression processing method according to Embodiment 3 of the present invention;

7 is a flowchart of a video compression processing method according to Embodiment 4 of the present invention;

8 is a block diagram showing an exemplary structure of a video compression processing apparatus according to Embodiment 5 of the present invention;

9 is a block diagram showing an exemplary structure of a video compression processing apparatus according to Embodiment 6 of the present invention;

FIG. 10 is a block diagram showing an exemplary structure of a video compression processing apparatus according to Embodiment 7 of the present invention; FIG.

11 is a block diagram showing an exemplary structure of a video compression processing apparatus according to Embodiment 8 of the present invention.

[0049] The implementation, functional features, and advantages of the present invention will be further described with reference to the accompanying drawings.

Embodiments of the invention

[0050] The description paragraphs of the embodiments of the invention are entered here. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, the suffixes such as "module", "component" or "unit" used to denote an element are merely for the purpose of facilitating the description of the present invention, and do not have a specific meaning per se. Therefore, "module" and "component" can be used in combination.

Embodiment 1

[0053] As shown in FIG. 1, in this embodiment, a video compression processing method includes:

[0054] S10. Receive a video code stream.

[0055] S20. Select a frame drawing mode and a frame drawing level according to preset conditions.

[0056] S30. Store the video code stream according to the frame drawing mode and the frame drawing level.

[0057] In this embodiment, the frame drawing mode and the frame drawing level can be selected by the storage space condition and the bandwidth condition to write the framed video file to the video recording, thereby greatly increasing the number of concurrent writing channels of the video recording storage. In addition, after the video file is written to the storage, the storage space is saved and the bandwidth is saved.

[0058] In this embodiment, the frame drawing mode includes: a frame extraction frame and a spatial frame extraction, where the frame drawing level includes : Base layer and several enhancement layers.

As shown in FIG. 2, in this embodiment, the frame extraction frame (indicated by the inter-turn field in the figure) and the spatial frame extraction (indicated by the spatial domain in the figure) are controlled by the frame selection mode selection, When the system, that is, the storage device does not select the frame drawing mode, the frame selection (ie, the frame rate is reduced) is performed first by default, and when the frame extraction cannot satisfy the requirements, the space is further developed on the basis of the frame extraction. Framed frame of the domain (reduced resolution).

[0060] In this embodiment, the frame extraction frame is based on SVC-T (temporal scaled video coding), and the inter-layer P frame prediction technology is used to segment the video stream into a basic layer. Layer code stream (represented by TO) and three enhancement layer code streams that can be independently decoded (represented by Tl, Τ2, Τ3, respectively). During the network transmission process, the enhancement layer code stream may be selectively discarded according to the size of the network bandwidth to output a code stream with frame rates of 3.75 fps, 7.5 fps, 15 fps, and 30 fps respectively; predicting the current image by referring to the already encoded image. , can reduce the redundancy of the video coding domain; by hierarchically managing the reference attributes of the coded image, the low-level coded image can not refer to the high-level coded image, and the high-level coded image can refer to the underlying coded image to introduce the domain The concept of grading; the code stream of different frame rates can be extracted from the video stream, wherein the output frame rate of the base layer T0 is 3.75 fps, the corresponding code stream is 512 Kbps, and the output frame rate of the enhancement layer T1 is 7.5 fps. The corresponding code stream is 1024Kbps, the output frame rate of the enhancement layer T2 is 15fps, the corresponding code stream is 2048Kbps, the output frame rate of the enhancement layer T3 is 30fps, and the corresponding code stream is 4096Kbps.

[0061] In the frame extraction mode, the selection of the frame selection level is shown in FIG. 3.

[0062] In this embodiment, the spatial frame extraction refers to that a code stream having different image sizes can be proposed from a code stream, and the spatial domain level is also represented by T0, T1, Τ2, and Τ3 layers to output different resolutions. The code stream, where Τ0 layer is the base layer is cif|&, the resolution is 352*288, the corresponding code stream is 512Kbps; the T1 layer is D1 format, the resolution is 704*576, and the corresponding code stream is 2048Kbps; The T2 layer is 720P, the resolution is 1280 *720, the corresponding code stream is 3072Kbps; the T3 layer is 1080P, the resolution is 1920*1080, and the corresponding code stream is 4096Kbps.

[0063] In the spatial domain frame drawing mode, a schematic diagram of selection of the frame drawing level is shown in FIG. 4.

[0064] In this embodiment, the frame drawing mode of the present invention may be a combination of a frame extraction frame and a spatial frame extraction frame. According to actual requirements, the frame selection may be performed first before the frame is extracted by the domain; wherein, the actual Requirements include: When the code stream is accepted, it can be compressed, and the code stream can be compressed at the same time. Repeated compression can be performed; the three conditions respectively correspond to the following three preset conditions; the preset conditions include: storage disk I/O bandwidth performance, user bandwidth, and user request concurrency and storage space occupancy; Under these conditions, the video file is stored by frame-storing to save storage space.

, the purpose of reducing hardware costs. For example: 1080P code stream storage requires about 80G of storage space per day. If the frame is only stored in the base layer, it only needs 10-20G space, and the space saves about 70%.

Embodiment 2

[0066] In this embodiment, when the preset condition is the I/O bandwidth performance of the storage disk, when the number of storage paths is too large, the stored disk I/O will become a bottleneck, if not Frame processing will result in slow writes to the disk and data loss. This greatly limits the number of channels that the storage device concurrently stores video. The storage device can be based on the number of storage channels and the I/O performance of the disk and the set pumping. The frame mode (configured in the frame-splitting mode, or in the silent mode) is used to store the frames after the frame is taken. By reducing the stored code stream, the normal writing of the recorded files is ensured, and the number of concurrent writes of the video recording storage is greatly improved.吋, as shown in FIG. 5, the step S20 includes:

[0067] S21: Acquire I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed (unit is Mb/s);

[0068] S22. Calculate a product of a storage path number and a code rate of the video code stream;

[0069] S23: determining whether the product is smaller than the maximum write speed of the I/O, and if yes, proceeding to step S25, performing full frame rate storage on the video code stream;

[0070] Otherwise, proceeding to step S24, selecting a frame drawing mode according to a preset rule, and calculating a write code rate of each video according to the I/O maximum write speed and the number of storage paths, according to the writing Rate select frame level

[0071] Taking the frame extraction in the 为 domain as an example: If the code stream is 1024Kbps after calculation, the frame level is extracted, and the T1 layer needs to be extracted (see the code stream corresponding to each layer). After all streams are framed to a 1024Kbps stream, the number of channels that can be stored will be four times the full frame rate.

Embodiment 3

[0073] In this embodiment, when the preset condition is that the transmission code rate is adjusted according to the user bandwidth and the user request concurrency, for example: when the synchronization requests the number of recorded playback channels, or the bandwidth is poor. , can move The mode selects the frame to send the code stream. If the network is in poor condition, or the mobile phone user requests video playback, the 1080P code stream can be framed to 720P or lower Dl, CIF resolution to adapt to the bandwidth situation. As shown in FIG. 6, the step S20 includes:

[0074] S210, determining whether the concurrent request bandwidth of the user is greater than the uplink bandwidth (the uplink bandwidth is generally about 60<3⁄4 of the total bandwidth), and if not, proceeding to step S220, performing full frame rate storage on the video code stream;

[0075] If yes, proceed to step S230, select a frame drawing mode according to a preset rule, and calculate a transmission code stream of each video according to the uplink bandwidth and the number of request paths, and select a frame drawing level according to the transmission code stream;

[0076] determining a framed level according to the calculated transmit code stream, and the code stream after the frame is not higher than the transmit code stream. Refer to the code stream corresponding to each layer of the frame (the frame mode is the configured frame mode, and the frame is framed by default. If the frame is not satisfied by the single frame, the frame is mixed in the hollow domain mode to reduce the resolution. Rate and transmission rate).

[0077] In this embodiment, if the mobile phone user requests video playback, the 1080p video is converted into a C IF resolution video by air-framed to ensure the smoothness of the video playback by the mobile phone user.

[0078] When there is a user double speed request, according to the double speed situation, the corresponding frame extraction or spatial frame extraction (configuration selection frame selection mode) can reduce the pressure of decoding and the pressure of the bandwidth; Frame level is another IJT2; 2x speed 吋 selects the frame level T1; 4 times speed or above 吋 selects the frame level T0.

[0079] Embodiment 4

[0080] In this embodiment, when the preset condition is the video file occupancy rate 已 stored in the storage space, as shown in FIG. 7, the step S20 includes:

[0081] S211, determining whether the storage space occupancy rate is less than a preset occupancy rate, and if yes, proceeding to step S2 21, performing full frame rate storage on the video code stream;

[0082] Otherwise, the process proceeds to step S231, and the video file in the storage space is re-stored.

[0083] In this embodiment, before the step S231, the method further includes: determining whether the video file only includes the base layer code stream, and if yes, the frame cannot be drawn again; otherwise, the frame is re-stored.

[0084] In this embodiment, the preset occupancy rate may be customized by the user, for example, 90%. After the storage space is occupied by 90%, the device starts to re-storage the stored video files. After reading the video file, analyze the svc level of each frame of data, extract the base layer data for storage, and mark the processed file. In order to save storage space, store video video as long as possible. The video file is mixed and framed, and the first spatial domain is framed to reduce the resolution to CIF format. When the frame is extracted, the frame rate is reduced to 3.75 fps. When the storage space reaches 90% again, and there is a video file that has not been framed, continue to draw frames for the undrawn framed video file, and repeat the above operation until all the files are framed and only the video files of the base layer are retained. , make the most use of storage space.

Embodiment 5

[0086] As shown in FIG. 8, in this embodiment, a video compression processing apparatus, including: [0087] a code stream receiving module 10, configured to receive a video code stream;

[0088] The frame drawing module 20 is configured to select a frame drawing mode and a frame drawing level according to a preset condition;

[0089] The storage module 30 is configured to store the video code stream according to the frame drawing mode and the frame drawing level.

[0090] In this embodiment, the frame drawing mode and the frame drawing level can be selected by the storage space condition and the bandwidth condition to write the framed video file to the video recording, thereby greatly increasing the number of concurrent writing channels of the video recording storage. In addition, after the video file is written to the storage, the storage space is saved and the bandwidth is saved.

[0091] In this embodiment, the frame drawing mode includes: a frame extraction frame and a spatial frame extraction, and the frame extraction level includes: a base layer and a plurality of enhancement layers.

As shown in FIG. 2, in this embodiment, the frame extraction and the spatial frame extraction are controlled by the frame selection mode selection. When the system does not select the frame selection mode, the frame selection is performed first by default. (ie, reduce the frame rate), when the frame extraction cannot meet the requirements, the spatial frame extraction (reduction of resolution) will be further performed on the basis of the frame extraction.

[0093] In this embodiment, the frame extraction frame is based on SVC-T (temporal scaled video coding), and the inter-layer P frame prediction technology is used to segment the video stream into a basic layer. Layer code stream (represented by TO) and three enhancement layer code streams that can be independently decoded (represented by Tl, Τ2, Τ3, respectively). During the network transmission process, the enhancement layer code stream may be selectively discarded according to the size of the network bandwidth to output a code stream with frame rates of 3.75 fps, 7.5 fps, 15 fps, and 30 fps respectively; predicting the current image by referring to the already encoded image. , can reduce the redundancy of the video coding domain; by hierarchically managing the reference attributes of the coded image, the low-level coded image can not refer to the high-level coded image, and the high-level coded image can refer to the underlying coded image to introduce the domain The concept of grading; the code stream of different frame rates can be extracted from the video code stream, wherein the output frame rate of the base layer T0 is 3.75 fps, and the corresponding code stream is 512. Kbps, the output frame rate of the enhancement layer Tl is 7.5fps, the corresponding code stream is 1024Kbps, the output frame rate of the enhancement layer T2 is 15fps, the corresponding code stream is 2048Kbps, and the output frame rate of the enhancement layer T3 is 30fps, the corresponding code The stream is 4096Kbps.

[0094] In the frame extraction mode, the selection of the frame selection level is as shown in FIG. 3.

[0095] In this embodiment, the spatial domain frame extraction means that code streams having different image sizes can be proposed from the code stream, and the spatial domain level is also represented by T0, T1, Τ2, and Τ3 layers to output different resolutions. The code stream, where the TO layer is the base layer is cif|&, the resolution is 352*288, the corresponding code stream is 512Kbps; the Tl layer is D1 format, the resolution is 704*576, and the corresponding code stream is 2048Kbps; The T2 layer is 720P, the resolution is 1280 *720, the corresponding code stream is 3072Kbps; the T3 layer is 1080P, the resolution is 1920*1080, and the corresponding code stream is 4096Kbps.

[0096] In the spatial domain frame drawing mode, a schematic diagram of the selection of the frame drawing level is shown in FIG. 4.

[0097] In this embodiment, the preset conditions include: storage disk I/O bandwidth performance, user bandwidth, and user request concurrency and storage space occupancy; under these conditions, by frame extraction storage To store video files, to save storage space and reduce hardware costs. For example: 1080P code stream storage requires about 80G of storage space per day. If the frame is only stored in the base layer, it only needs 10-2 0G space, and the space saves about 70%.

Embodiment 6

[0099] In this embodiment, when the preset condition is the I/O bandwidth performance of the storage disk, when the number of storage paths is too large, the stored disk I/O will become a bottleneck, if not Frame processing will result in slow writes to the disk and data loss. This greatly limits the number of channels that the storage device concurrently stores video. The storage device can be based on the number of storage channels and the I/O performance of the disk and the set pumping. The frame mode (configured in the frame-splitting mode, or in the silent mode) is used to store the frames after the frame is taken. By reducing the stored code stream, the normal writing of the recorded files is ensured, and the number of concurrent writes of the video recording storage is greatly improved.吋, as shown in FIG. 9, the frame drawing module includes:

[0100] The first obtaining unit 21 is configured to acquire I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed.

[0101] The first calculating unit 22 is configured to calculate a product of a storage path number and a code rate of the video code stream;

[0102] The first determining unit 23 is configured to determine whether the product is smaller than the maximum write speed of the I/O, and if yes, Performing full frame rate storage on the video code stream;

[0103] The first frame drawing unit 24 is configured to: when the product is not less than the maximum write speed of the I/O, select a frame drawing mode according to a preset rule, and according to the maximum write speed of the I/O The storage path number calculates the write code rate of each video, and selects the frame draw level according to the write code rate.

[0104] Taking the frame extraction in the 为 domain as an example: If the code stream is 1024Kbps after calculation, the frame level is extracted, and the T1 layer needs to be extracted (see the corresponding code stream of each layer). After all streams are framed to a 1024Kbps stream, the number of channels that can be stored will be four times the full frame rate.

Example 7

[0106] In this embodiment, when the preset condition is the user bandwidth and the user requesting the concurrent quantity, when the number of synchronization request video playback channels is large, or the bandwidth is poor, the frame selection may be dynamically selected. Sending a stream, such as when the network is poor, or when the mobile phone user requests video playback, the 1080P stream can be framed to a 720P or lower Dl, CIF resolution to adapt to the bandwidth situation, which can ensure smooth playback. Therefore, as shown in FIG. 10, the frame drawing module includes:

[0107] The second determining unit 210 is configured to determine whether the concurrent request volume of the user is greater than the uplink bandwidth (the uplink bandwidth is generally about 60% of the total bandwidth);

[0108] The second frame extracting unit 220 is configured to: when the user requests that the concurrent quantity is greater than the uplink bandwidth, select a frame drawing mode according to a preset rule, and calculate a sending code stream of each video according to the uplink bandwidth and the number of request paths. And selecting a framed level according to the sent code stream.

[0109] The framed level is determined according to the calculated transmit code stream, and the code stream after the frame is not higher than the transmit code stream. Refer to the code stream corresponding to each layer of the frame (the frame mode is the configured frame mode, and the frame is framed by default. If the frame is not satisfied by the single frame, the frame is mixed in the hollow domain mode to reduce the resolution. Rate and transmission rate).

[0110] In this embodiment, if the mobile phone user requests video playback, the 1080p video is converted into a C IF resolution video by air-framed to ensure the smoothness of the video playback by the mobile phone user.

[0111] When there is a user double speed request, according to the double speed situation, the corresponding frame extraction or spatial frame extraction (configuration selection frame selection mode) can reduce the pressure of decoding and the pressure of the bandwidth; Frame level is another IJT2; 2x speed 吋 selects the frame level T1; 4 times speed or above 吋 selects the frame level T0.

Embodiment 8 [0113] As shown in FIG. 11, in the embodiment, when the preset condition is a storage space occupancy, the frame drawing module includes:

[0114] The third determining unit 211 is configured to determine whether the storage space occupancy rate is less than a preset occupancy rate, and if yes, perform full frame rate saving on the video code stream;

[0115] The third frame drawing unit 221 is configured to perform frame extraction and re-storing of the video file in the storage space when the storage space occupancy rate is not less than a preset occupancy rate.

[0116] In this embodiment, before the step S231, the method further includes: determining whether the video file only includes the base layer code stream, and if yes, not drawing the frame again; otherwise, performing frame extraction and re-storing.

[0117] In this embodiment, the preset occupancy rate may be customized by the user, for example, 90%. After the storage space is occupied by 90%, the device starts to re-storage the stored video files. After reading the video file, analyze the svc level of each frame of data, extract the base layer data for storage, and mark the processed file. In order to save storage space, store video video as long as possible. The file is mixed and framed, and the first spatial domain is framed to reduce the resolution to CIF format. When the frame is extracted, the frame rate is reduced to 3.75 fps. When the storage space reaches 90% again, and there is a video file that has not been framed, continue to draw frames for the undrawn framed video file, and repeat the above operation until all the files are framed and only the video files of the base layer are retained. , make the most use of storage space.

[0118] It should be noted that, in this document, the terms "including", "comprising", or any other variations thereof are intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a Those elements, but also other elements not explicitly listed, or elements that are inherent to such a process, method, item or device. An element defined by the phrase "comprises a ..." without further restrictions does not exclude the presence of additional elements in the process, method, article, or device that comprises the element.

[0119] The foregoing serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former It is a better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, In the CD), including several The instructions are for causing a terminal device (which may be a cell phone, computer, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the contents of the drawings may be directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Industrial applicability

[0122] A video compression processing method and apparatus according to the present invention, the method includes: receiving a video code stream; selecting a frame drawing mode and a frame drawing level according to a preset condition; according to the frame drawing mode and the frame drawing Level writing the video file to the video stream, greatly improving the number of concurrent writes of the video recording storage. In addition, after the video file is written and stored, the frame mode and the frame drawing can be selected through the storage space condition and the bandwidth condition. Level, to store video frames for video recording, saving storage space and saving bandwidth. Therefore, it has industrial applicability.

Claims

Claim

A video compression processing method includes:

Receiving a video stream;

Selecting a frame drawing mode and a frame drawing level according to preset conditions;

The video code stream is stored in accordance with the frame drawing mode and the framed frame level.

The video compression processing method according to claim 1, wherein the frame drawing mode comprises: a frame extraction frame and a spatial frame extraction, wherein the frame extraction level comprises: a base layer and a plurality of enhancement layers.

The video compression processing method according to claim 2, wherein, when the preset condition is an I/O bandwidth performance of the storage disk, the selecting the frame drawing mode and the frame drawing level according to the preset condition includes :

Obtaining I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed; calculating a product of a storage path number and a code rate of the video code stream;

Determining whether the product is less than the maximum write speed of the I/O, and if so, performing full frame rate storage on the video code stream;

Otherwise, the frame drawing mode is selected according to a preset rule, and the write code rate of each video is calculated according to the I/O maximum write speed and the number of stored channels, and the frame draw level is selected according to the write code rate.

The video compression processing method according to claim 2, wherein, when the preset condition is a user bandwidth and a user request concurrency quantity, the selecting the frame drawing mode and the frame drawing level according to the preset condition comprises:

Determining whether the concurrent request volume of the user is greater than the uplink bandwidth;

If yes, the frame selection mode is selected according to a preset rule, and a transmission code stream of each video is calculated according to the uplink bandwidth and the number of request paths, and the frame extraction level is selected according to the transmission code stream. The video compression processing method according to claim 2, wherein, when the preset condition is a storage space occupancy ratio, the selecting the frame drawing mode and the frame drawing level according to the preset condition comprises:

Determining whether the storage space occupancy ratio is less than a preset occupancy rate, and if yes, The frequency code stream is saved at a full frame rate;

Otherwise, the video files in the storage space are re-stored.

A video compression processing apparatus includes:

a code stream receiving module, configured to receive a video code stream;

a frame drawing module, configured to select a frame drawing mode and a frame drawing level according to a preset condition; and a storage module, configured to store the video code stream according to the frame drawing mode and the frame drawing level.

A video compression processing apparatus according to claim 6, wherein the frame drawing mode comprises: a frame extraction frame and a spatial frame extraction, the frame extraction level comprising: a base layer and a plurality of enhancement layers.

The video compression processing device according to claim 7, wherein, when the preset condition is an I/O bandwidth performance of the storage disk, the frame drawing module comprises:

a first acquiring unit, configured to acquire I/O bandwidth performance of the storage disk, where the I/O bandwidth performance includes an I/O maximum write speed;

a first calculating unit, configured to calculate a product of a number of storage paths of the video code stream and a code rate; a first determining unit, configured to determine whether the product is smaller than a maximum write speed of the I/O, and if yes, The video stream is stored at a full frame rate;

a first frame drawing unit, configured to select a frame drawing mode according to a preset rule when the product is not less than the I/O maximum writing speed ,, and according to the I/O maximum writing speed and the number of storage paths The write code rate of each video is calculated, and the frame draw level is selected according to the write code rate. The video compression processing device according to claim 7, wherein, when the preset condition is a user bandwidth and a user request for a concurrent quantity, the frame drawing module comprises: a second determining unit, configured to determine a user request Whether the concurrent quantity is greater than the uplink bandwidth; the second frame drawing unit is configured to: when the user requests the concurrent quantity to be greater than the uplink bandwidth, select a frame drawing mode according to a preset rule, and calculate each channel according to the uplink bandwidth and the number of requested channels. Sending a code stream, and selecting a framed level according to the transmitted code stream.

The video compression processing device according to claim 7, wherein, when the preset condition is a storage space occupancy, the frame drawing module comprises: a third determining unit, configured to determine whether the storage space occupancy rate is less than a preset occupancy rate, and if yes, performing full frame rate saving on the video code stream;

The third frame extracting unit is configured to: when the storage space occupancy rate is not less than a preset occupancy rate, perform frame extraction and re-storing of the video file in the storage space.