CN103856812A - Video playing method and device - Google Patents
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Abstract
The embodiment of the invention discloses a video playing method and a video playing device which are applied to a mobile terminal. The video playing method comprises the steps of when play of a target video file is started, detecting a video decoding frame number of the target video file within a preset time period; judging whether the target video file frame decoding speed is lower than the target video file frame playing speed; under a condition that the target video file frame decoding speed is lower than the target video file frame playing speed, abandoning a non-decoded non-reference frame in the target video file, and decoding a non-decoded reference frame in the target video file; playing the decoded reference frame in the target video file. According to the embodiment of the invention, the non-decoded non-reference frame in the target video file is abandoned in advance, so that the abandoned video frame is not required to be decoded and played in a subsequent video playing process; the phenomenon of uncontinuous video frame playing in the video playing process is avoided, and the experience effect of a user watching a video is enhanced.
Description
Technical field
The present invention relates to mobile terminal video and play field, particularly a kind of video broadcasting method and device.
Background technology
Developing rapidly of mobile terminal (such as mobile phone, notebook computer, panel computer etc.), allows people can carry out the broadcasting of video whenever and wherever possible.
Video broadcasting method of the prior art, normally set in advance video sound and draw synchronizing time point, in the process of video playback, CPU(Central Processing Unit, central processing unit) audio frame and frame of video to video decode, draw synchronizing time point at video sound audio frame and frame of video are carried out synchronously, after synchronously completing, continue audio frame and the frame of video decoding of video and play.
But, above-mentioned video broadcasting method, in some cases, in video display process, the phenomenon that just there will be video playback card to pause, has a strong impact on user and watches the experience of video.
For example, in the time utilizing low configurating mobile to watch HD video, because the restriction of handset capability causes the decoding capability deficiency to video, the decoding speed of frame of video is not reached the normal playback speed of frame of video, in this case, draw synchronous effect in order to reach sound, just video need to be stopped playing, the decoding of waiting for CPU to frame of video, in the time that the timestamp of the frame of video of decoding arrives sound picture synchronizing time point, from this time point, continue the broadcasting of video.
For example, certain video totally 60 seconds, 25 frame/seconds of normal play frame per second, carry out sound drew when synchronous at the 10th second end, audio frame is played to 250 frames, and presentation of video frames is to 225 frames, and now video will stop playing, until decoded the completing of frame of video of the 226th frame to the 250 frames, video continues to play from the 10th second end again.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of video broadcasting method and device, to solve in video display process, and the phenomenon that the video playback card of appearance pauses, raising user watches the experience effect of video.
For achieving the above object, the embodiment of the invention discloses a kind of video broadcasting method, be applied to mobile terminal, comprising:
From target video file is play, the video decode frame number of default duration internal object video file is detected;
According to the result detecting, judge whether the video decode frame number of unit interval internal object video file is less than the target video file frame per second obtaining in advance;
Be less than the target video file frame per second obtaining in advance at the video decode frame number of unit interval internal object video file, abandon the non-reference frame of not yet decoding in target video file, do not decode, the reference frame of not yet decoding in target video file is decoded;
Reference frame in decoded described target video file is play;
Wherein, when non-reference frame refers to IPB coding, do not need the frame of reference.
Preferably, the acquisition in advance of described target video file frame per second, comprising:
Before target video file not being play, obtain target video file frame per second; Or
After target video file starts to play and before decision operation, obtain target video file frame per second;
Wherein, described decision operation is
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance.
Preferably, described in abandon in target video file the not yet non-reference frame of decoding, do not decode, in target video file not yet the reference frame of decoding decode, comprising:
Judge whether each frame of video of not yet decoding in target video file is non-reference frame;
In target video file, not yet the frame of video of decoding is non-reference frame, abandons the non-reference frame of not yet decoding in target video file, does not decode;
The reference frame of not yet decoding in target video file is decoded.
Preferably, describedly judge in target video file not yet whether each frame of video of decoding is non-reference frame, comprising:
Whether the frame type that judges each frame of video of not yet decoding in target video file belongs to non-reference frame; Or
Whether the frame head that judges each frame of video of not yet decoding in target video file contains the peculiar mark of non-reference frame.
Preferably, described reference frame in decoded described target video file is play, being comprised:
According to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating.
Preferably, described reference frame in decoded described target video file is play, being comprised:
Reference frame in decoded described target video file is play with target video file frame per second, and wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
For achieving the above object, the embodiment of the invention also discloses a kind of video play device, be applied to mobile terminal, comprising:
Detection module, for from target video file is play, detects the video decode frame number of default duration internal object video file;
Judge module, for according to the result detecting, judges whether the video decode frame number of unit interval internal object video file is less than the target video file frame per second obtaining in advance;
Decoder module, in judge module judged result for be in the situation that, abandon in target video file the not yet non-reference frame of decoding, do not decode, in target video file not yet the reference frame of decoding decode;
Playing module, for playing the reference frame of decoded described target video file;
Wherein, when non-reference frame refers to IPB coding, do not need the frame of reference.
Preferably, the acquisition in advance of described target video file frame per second, comprising:
Before target video file not being play, obtain target video file frame per second; Or
After target video file starts to play and before decision operation, obtain target video file frame per second;
Wherein, described decision operation is
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance.
Preferably, described decoder module, comprising: judge submodule, abandon submodule reconciliation numeral module;
Described judgement submodule, for judging whether each frame of video that target video file is not yet decoded is non-reference frame;
The described submodule that abandons, in the situation that judging that submodule is judged as YES, abandons the non-reference frame of not yet decoding in target video file, does not decode;
Described decoding submodule, decodes for the reference frame that target video file is not yet decoded.
Preferably, described judgement submodule, specifically for:
Whether the frame type that judges each frame of video of not yet decoding in target video file belongs to non-reference frame; Or
Whether the frame head that judges each frame of video of not yet decoding in target video file contains the peculiar mark of non-reference frame.
Preferably, described playing module, specifically for:
According to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating.
Preferably, described playing module, specifically for:
Reference frame in decoded described target video file is play with target video file frame per second, and wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
As seen from the above technical solutions, the embodiment of the present invention provides a kind of video broadcasting method and device, be applied to mobile terminal, from target video file is play, just the video decode frame number of default duration internal object video file is detected, according to the result detecting, whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance, be less than the target video file frame per second obtaining in advance at the video decode frame number of unit interval internal object video file, in advance the non-reference frame of not yet decoding in target video file is abandoned, do not decode, only the reference frame of not yet decoding in target video file is decoded, carrying out in the process of subsequent video broadcasting, decode and play with regard to not needing the frame of video to abandoning, solve in video display process, the phenomenon that the video playback card occurring pauses, improve the experience effect that user watches video.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic flow sheet of a kind of video broadcasting method that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of video play device that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Below by specific embodiment, the present invention is described in detail.
It should be noted that, the embodiment of the present invention provides a kind of video broadcasting method to be applicable to mobile terminal.In actual applications, this mobile terminal can be smart mobile phone, notebook computer, panel computer etc.
The schematic flow sheet of a kind of video broadcasting method that Fig. 1 provides for the embodiment of the present invention, comprising:
S101: from target video file is play, the video decode frame number of default duration internal object video file is detected;
S102: according to the result detecting, judge whether the video decode frame number of unit interval internal object video file is less than the target video file frame per second obtaining in advance, if so, carry out S103, if not, carry out S105;
S103: abandon the non-reference frame of not yet decoding in target video file, do not decode, the reference frame of not yet decoding in target video file is decoded;
S104: the reference frame in decoded described target video file is play;
S105: the frame of video of not yet decoding in target video file and play is decoded and play.
It should be noted that, non-reference frame does not need the frame of reference while referring to IPB coding, when decoding, do not need just can decode to other frames with reference to this frame yet, if abandoned reference frame, when the decoding of subsequent video frame need to be decoded with reference to this frame, will cause the decoding of subsequent video frame to go wrong, thereby cause one section of video not show, until be decoded to next reference frame.
Exemplary, in an embodiment of the present invention, hypothetical target video file A duration 30 seconds, 25 frame/seconds of frame per second, target video file A video amounts to 750 frames.
Supposing to play and start from target video file A, common decoded video 56 frames to A detected in first 2 seconds, is 56 frame/2 second=28 frame/seconds to the average decoding speed of the frame of video of A.
As can be seen here, the average decoding speed of frame of video to target video file A is greater than A frame per second, now can not produce sound and draw the generation of synchronization video Caton phenomenon, without target video file A is carried out to frame losing operation, continue the frame of video of not yet decoding in target video file A and play decode and play.
Supposing to play and start from target video file A, suppose to detect in first 2 seconds common decoded video 48 frames to A, is 48 frame/2 second=24 frame/seconds to the average decoding speed of the frame of video of A.
As can be seen here, the average decoding speed of frame of video of target video file A is less than to A frame per second, abandons the non-reference frame of not yet decoding in target video file A, do not decode, the reference frame of not yet decoding in target video file is decoded.
Concrete, before abandoning the non-reference frame of not yet decoding in target video file, need to whether be that non-reference frame judges to each frame of video of not yet decoding in target video file, in the situation that this frame of video is non-reference frame, abandon.
Be understandable that, the method that judges the non-reference frame in target video file has multiple, for example: judge whether the video frame type in target video file belongs to non-reference frame, in the time that video frame type belongs to non-reference frame, this frame is non-reference frame; Or whether the frame head that judges the frame of video in target video file contains the peculiar mark of non-reference frame, in the time that the frame head of frame of video contains the peculiar mark of non-reference frame, this frame is non-reference frame; Certainly be not limited to this.
Be understandable that, the non-reference frame of not yet decoding in target video file is abandoned, can detect each frame of video of not yet decoding in target video file, after detection completes, non-reference frame is abandoned together, also can often a non-reference frame be detected time, abandon this frame, continue to detect next frame of video.
Optionally, to the acquisition in advance of target video file frame per second, can and obtain before decision operation after target video file starts to play, wherein, this decision operation is:
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance.
Further, optional, to the acquisition in advance of target video file frame per second, can also before target video file not being play, obtain.For example, the file of preserving on mobile terminal is analyzed in advance, the information such as the frame per second of all video files on mobile terminal, duration, document location, file name are kept in tables of data, when pending video file frame per second comparison, from this tables of data, extract the frame per second of video file to be judged.
Optionally, in a specific implementation of the present invention, after non-reference frame has been abandoned together, when continuing the decoding of reference frame and playing, can be according to target video file residue reference frame number and residue playing duration, calculate target video file broadcasting speed, with the speed calculating, target video file residue reference frame is play.
Exemplary, target video file A video amounts to 750 frames, 30 seconds, 25 frame/seconds of frame per second, wherein, play 48 frames of decoding in first 2 seconds, non-reference frame totally 58 frames in decoded video not yet in the target video file A abandoning, target video file residue reference frame number is: 750-48-58=644 frame, residue playing duration is: 30-2=28 second, frame/28, target video file broadcasting speed=644 second=23 frame/seconds.With the broadcasting speed of 23 frames per second, the residue reference frame of target video file A is play.
Optionally, in a specific implementation of the present invention, in the time that the reference frame in decoded target video file is proceeded to play, can be according to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating.
Exemplary, target video file A video amounts to 750 frames, 30 seconds, 25 frame/seconds of frame per second, wherein, plays 48 frames of decoding in first 2 seconds, and decoding 24 frames per second, play so that the decoding speed of target video file A is carried out to remaining video, i.e. broadcasting 24 frames per second.
Optionally, in a specific implementation of the present invention, in the time that the reference frame in decoded target video file is proceeded to play, can play with target video file frame per second the reference frame in decoded described target video file, wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
Exemplary, target video file A video amounts to 750 frames, 30 seconds, 25 frame/seconds of frame per second, wherein, play 48 frames of decoding in first 2 seconds, in the target video file A abandoning, not yet the non-reference frame in decoded video is respectively: the 100th frame, the 117th frame, the 147th frame ...
Speed with 25 frames per second is play target video file, in the time playing the 100th frame video, because this frame video is dropped, therefore this frame place image shows the image of the 99th frame, identical, in the time playing the 117th frame video, this frame place image shows the image of the 116th frame, in the time playing the 147th frame video, this frame place image shows the image of the 146th frame ...
The present invention is embodiment illustrated in fig. 1 in application, in advance the non-reference frame of not yet decoding in target video file is abandoned, do not decode, only the reference frame of not yet decoding in target video file is decoded, carrying out in the process of subsequent video broadcasting, with regard to not needing the frame of video to abandoning decode and play, solve in video display process, the video playback card phenomenon of pausing that occurs, has improved user and has watched the experience effect of video.
The structural representation of a kind of video play device that Fig. 2 provides for the embodiment of the present invention, comprising: detection module 201, judge module 202, decoder module 203 and playing module 204.
Wherein, detection module 201, for from target video file is play, detects the video decode frame number of default duration internal object video file;
Optionally, to the acquisition of target video file frame per second, can, before target video file not being play, obtain target video file frame per second; Or
After target video file starts to play and before decision operation, obtain target video file frame per second;
Wherein, described decision operation is
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance;
Wherein, judge submodule, for judging whether each frame of video that target video file is not yet decoded is non-reference frame;
Abandon submodule, in the situation that judging that submodule is judged as YES, abandon the non-reference frame of not yet decoding in target video file, do not decode;
Decoding submodule, decodes for the reference frame that target video file is not yet decoded;
Wherein, judge submodule, specifically can be for:
Whether the frame type that judges each frame of video of not yet decoding in target video file belongs to non-reference frame; Or
Whether the frame head that judges each frame of video of not yet decoding in target video file contains the peculiar mark of non-reference frame;
Playing module 204, for playing the reference frame of decoded described target video file;
Playing module 204 in the present embodiment, specifically can be for:
According to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating;
Playing module 204 in the present embodiment, specifically can be for:
Reference frame in decoded described target video file is play with target video file frame per second, and wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
It should be noted that, non-reference frame does not need the frame of reference while referring to IPB coding, when decoding, do not need just can decode to other frames with reference to this frame yet, if abandoned reference frame, when the decoding of subsequent video frame need to be decoded with reference to this frame, will cause the decoding of subsequent video frame to go wrong, thereby cause one section of video not show, until be decoded to next reference frame.
The present invention is embodiment illustrated in fig. 2 in application, in advance the non-reference frame of not yet decoding in target video file is abandoned, do not decode, only the reference frame of not yet decoding in target video file is decoded, carrying out in the process of subsequent video broadcasting, with regard to not needing the frame of video to abandoning decode and play, solve in video display process, the video playback card phenomenon of pausing that occurs, has improved user and has watched the experience effect of video.
It should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Each embodiment in this specification all adopts relevant mode to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is and the difference of other embodiment.Especially,, for device embodiment, because it is substantially similar in appearance to embodiment of the method, so description is fairly simple, relevant part is referring to the part explanation of embodiment of the method.
One of ordinary skill in the art will appreciate that all or part of step realizing in said method execution mode is can carry out the hardware that instruction is relevant by program to complete, described program can be stored in computer read/write memory medium, here the alleged storage medium obtaining, as: ROM/RAM, magnetic disc, CD etc.
The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., be all included in protection scope of the present invention.
Claims (12)
1. a video broadcasting method, is applied to mobile terminal, it is characterized in that, described method comprises:
From target video file is play, the video decode frame number of default duration internal object video file is detected;
According to the result detecting, judge whether the video decode frame number of unit interval internal object video file is less than the target video file frame per second obtaining in advance;
Be less than the target video file frame per second obtaining in advance at the video decode frame number of unit interval internal object video file, abandon the non-reference frame of not yet decoding in target video file, do not decode, the reference frame of not yet decoding in target video file is decoded;
Reference frame in decoded described target video file is play;
Wherein, when non-reference frame refers to IPB coding, do not need the frame of reference.
2. method according to claim 1, is characterized in that, the acquisition in advance of described target video file frame per second, comprising:
Before target video file not being play, obtain target video file frame per second; Or
After target video file starts to play and before decision operation, obtain target video file frame per second;
Wherein, described decision operation is
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance.
3. method according to claim 1, is characterized in that, described in abandon in target video file the not yet non-reference frame of decoding, do not decode, in target video file not yet the reference frame of decoding decode, comprising:
Judge whether each frame of video of not yet decoding in target video file is non-reference frame;
In target video file, not yet the frame of video of decoding is non-reference frame, abandons the non-reference frame of not yet decoding in target video file, does not decode;
The reference frame of not yet decoding in target video file is decoded.
4. method according to claim 3, is characterized in that, describedly judges in target video file not yet whether each frame of video of decoding is non-reference frame, comprising:
Whether the frame type that judges each frame of video of not yet decoding in target video file belongs to non-reference frame; Or
Whether the frame head that judges each frame of video of not yet decoding in target video file contains the peculiar mark of non-reference frame.
5. method according to claim 1, is characterized in that, described reference frame in decoded described target video file is play, and comprising:
According to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating.
6. method according to claim 1, is characterized in that, described reference frame in decoded described target video file is play, and comprising:
Reference frame in decoded described target video file is play with target video file frame per second, and wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
7. a video play device, is applied to mobile terminal, it is characterized in that, described device comprises:
Detection module, for from target video file is play, detects the video decode frame number of default duration internal object video file;
Judge module, for according to the result detecting, judges whether the video decode frame number of unit interval internal object video file is less than the target video file frame per second obtaining in advance;
Decoder module, in judge module judged result for be in the situation that, abandon in target video file the not yet non-reference frame of decoding, do not decode, in target video file not yet the reference frame of decoding decode;
Playing module, for playing the reference frame of decoded described target video file;
Wherein, when non-reference frame refers to IPB coding, do not need the frame of reference.
8. device according to claim 7, is characterized in that, the acquisition in advance of described target video file frame per second, comprising:
Before target video file not being play, obtain target video file frame per second; Or
After target video file starts to play and before decision operation, obtain target video file frame per second;
Wherein, described decision operation is
Whether the video decode frame number that judges unit interval internal object video file is less than the target video file frame per second obtaining in advance.
9. device according to claim 7, is characterized in that, described decoder module, comprising: judge submodule, abandon submodule reconciliation numeral module;
Described judgement submodule, for judging whether each frame of video that target video file is not yet decoded is non-reference frame;
The described submodule that abandons, in the situation that judging that submodule is judged as YES, abandons the non-reference frame of not yet decoding in target video file, does not decode;
Described decoding submodule, decodes for the reference frame that target video file is not yet decoded.
10. device according to claim 9, is characterized in that, described judgement submodule, specifically for:
Whether the frame type that judges each frame of video of not yet decoding in target video file belongs to non-reference frame; Or
Whether the frame head that judges each frame of video of not yet decoding in target video file contains the peculiar mark of non-reference frame.
11. devices according to claim 7, is characterized in that, described playing module, specifically for:
According to the video decode frame number of the default duration internal object video file detecting, calculate target video file frame of video decoding speed, the reference frame in decoded described target video file is play with the decoding speed calculating.
12. devices according to claim 7, is characterized in that, described playing module, specifically for:
Reference frame in decoded described target video file is play with target video file frame per second, and wherein, the non-reference frame place image being dropped shows according to the last reference frame image being adjacent.
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| CN113453054A (en) * | 2021-06-30 | 2021-09-28 | 深圳市斯博科技有限公司 | Audio and video frame loss method and device, computer equipment and storage medium |
| CN114257846A (en) * | 2021-12-23 | 2022-03-29 | 杭州登虹科技有限公司 | Content-aware-based mobile terminal self-adaptive video speed-doubling playing method |
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| CN107249144B (en) * | 2017-05-12 | 2020-05-15 | 北京小鸟看看科技有限公司 | Method for decoding multimedia file, multimedia player and playing equipment |
| CN107172486A (en) * | 2017-05-24 | 2017-09-15 | 维沃移动通信有限公司 | A kind of video encoding/decoding method and mobile terminal |
| CN107426200A (en) * | 2017-07-13 | 2017-12-01 | 广州市百果园网络科技有限公司 | A kind of multimedia data processing method and device |
| CN107426200B (en) * | 2017-07-13 | 2020-10-23 | 广州市百果园网络科技有限公司 | Multimedia data processing method and device |
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| CN114257846A (en) * | 2021-12-23 | 2022-03-29 | 杭州登虹科技有限公司 | Content-aware-based mobile terminal self-adaptive video speed-doubling playing method |
| CN114979712A (en) * | 2022-05-13 | 2022-08-30 | 北京字节跳动网络技术有限公司 | Video playing starting method, device, equipment and storage medium |
| CN115460458A (en) * | 2022-09-01 | 2022-12-09 | 展讯通信(天津)有限公司 | Video frame loss method and device |
| CN115460458B (en) * | 2022-09-01 | 2023-09-19 | 展讯通信(天津)有限公司 | Video frame loss method and device |
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