CN101848382A - Method and system for adjusting video streaming image resolution ratio and code stream - Google Patents
Method and system for adjusting video streaming image resolution ratio and code stream Download PDFInfo
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Abstract
The invention is applicable in the technical field of image treatment, and provides a method, a system and a video playing terminal for adjusting a video streaming image resolution ratio and a code stream. The method comprises the steps of: detecting the size of a video streaming display window in real time; calculating the size of the adjusted video streaming display window; matching an image resolution ratio supported by a video source; and sending the matched image resolution ratio supported by the video source to the video source to acquire a video steam corresponding to the image resolution ratio. In the embodiment of the invention, the size of the video streaming display window is detected in real time; the size of the adjusted window is calculated; the image resolution ratio supported by the video source is matched; and the matched image resolution ratio supported by the video source is sent to the video source to acquire the corresponding video steam. When the size of the video streaming display window is adjusted, the video streaming display window can adjust the video streaming image resolution ratio and code stream in a self-adapting mode, so that the user experience is enhanced, and the performance of the video playing terminal under multiwindow pictures is improved.
Description
Technical field
The invention belongs to technical field of image processing, relate in particular to method of adjustment, system and the video playing terminal of a kind of video streaming image resolution ratio and code stream.
Background technology
In Network Video Surveillance and demand stream media system application, watch and hold the general fashion that carries out video request program as follows:
1) user selects or configures image resolution ratio, frame per second, code stream size etc. by system in advance to the video flowing of wanting program request.
2) when the user in broadcast window during order video, the image resolution ratio transmitting video-frequency flow that system will set in advance according to the user also shows.
But, when the video display area size of watching end has no change, video flowing is always according to being transmitted by predefined image resolution ratio, frame per second or code check etc., and be maintained fixed, it doesn't matter promptly to watch the parameter selections such as resolution, frame per second, code stream of the variation of looking closely viewing area size frequently and the video flowing of transmission. always
When the video display area of watching end narrows down to the size of video image less than transmission, because the viewing area diminishes, often need to reduce image pixel downscaled images size, could in current display area, show entire image, but, the real image display resolution obviously reduces, and the code stream of actual transmissions and not reduction of bandwidth requirement, has wasted the transmission bandwidth resource; When the user amplifies the viewing area to greater than the size of video image of transmission the time in order to see image detail clearly, although can carry out showing again after the processing and amplifying to image by some algorithms, but the general real image of reduction that is difficult to, its actual result is that the user can't clearerly see image clearly, thereby lost the meaning that the user amplifies the viewing area, user experience is relatively poor.
Summary of the invention
The purpose of the embodiment of the invention is to provide the method for adjustment of a kind of video streaming image resolution ratio and code stream, be intended to solve in the prior art, when the size of the video display area of watching end changes, can't effectively adjust the problem that user experience is relatively poor to the image resolution ratio of video flowing.
The embodiment of the invention is achieved in that the method for adjustment of a kind of video streaming image resolution ratio and code stream, and described method comprises the steps:
Size to the video flowing display window detects in real time;
When the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window;
According to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported;
The image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio, wherein, the corresponding video flowing of described and described image resolution ratio is that described video source is adjusted rear video stream to the parameter that comprises image resolution ratio and code stream.
Another purpose of the embodiment of the invention is to provide the Adjustment System of a kind of video streaming image resolution ratio and code stream, and described system comprises:
Detection module is used for the size of video flowing display window is detected in real time;
Computing module is used for calculating the size of adjusted video flowing display window when size that described detection module detects described video flowing display window has the operation of adjustment;
Matching module is used for the size according to the adjusted video flowing display window of described computing module calculating, the image resolution ratio that the match video source is supported; And
The image resolution ratio sending module, be used for the image resolution ratio that the video source that described matching module coupling obtains is supported is sent to video source, to obtain and the corresponding video flowing of described image resolution ratio, wherein, the corresponding video flowing of described and described image resolution ratio is that described video source is carried out adjusted video flowing to the parameter that comprises image resolution ratio and code stream.
Another purpose of the embodiment of the invention is to provide a kind of video playing terminal that comprises the Adjustment System of video streaming image resolution ratio and code stream.
In embodiments of the present invention, the size to the video flowing display window detects in real time; When the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window; According to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported; The image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio, when the size of video flowing display window is adjusted, can adjust by adaptive image resolution ratio and code stream video flowing, thereby strengthen the experience of user, promote the performance of video playing terminal under the multi-window picture the different images quality that produced because of the broadcast window size variation.
Description of drawings
Fig. 1 is the realization flow figure of the method for adjustment of the video streaming image resolution ratio that provides of first embodiment of the invention and code stream;
Fig. 2 is the realization flow figure of the method for adjustment of the video streaming image resolution ratio that provides of second embodiment of the invention and code stream;
Fig. 3 is the realization flow figure of the method for adjustment of the video streaming image resolution ratio that provides of third embodiment of the invention and code stream;
Fig. 4 is the structured flowchart of the Adjustment System of the video streaming image resolution ratio that provides of first embodiment of the invention and code stream;
Fig. 5 is the structured flowchart of the Adjustment System of the video streaming image resolution ratio that provides of second embodiment of the invention and code stream;
Fig. 6 is the structured flowchart of the Adjustment System of the video streaming image resolution ratio that provides of third embodiment of the invention and code stream.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, the size to the video flowing display window detects in real time; When the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window; According to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported; The image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio.
Fig. 1 shows the realization flow of the method for adjustment of video streaming image resolution ratio that first embodiment of the invention provides and code stream, and its concrete step is as described below:
In step S101, the size of video flowing display window is detected in real time.
In embodiments of the present invention, the user is when watching video flowing, and when the video flowing display window being carried out the size adjustment, control detection should be adjusted operation.
In step S102, when the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window.
In embodiments of the present invention, when detecting the user size of video flowing display window is adjusted when operation, calculate the size of the display window of adjusted video flowing, for example, original size is 1024*800, and the size conversion of the adjusted video flowing display window of user is 800*600.
In step S103, according to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported.
In embodiments of the present invention, when calculating adjusted video flowing display window big or small, image resolution ratio is mated, the image resolution ratio that this video source is supported can be to obtain from video source immediately, also can be to be kept at video playing terminal in advance, the following specific embodiment that provides is described, and does not repeat them here.
In step S104, the image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio.
Wherein, being described video source with the corresponding video flowing of described image resolution ratio adjusts rear video stream to the parameter that comprises image resolution ratio and code stream, be after video source receives the image resolution ratio that obtains of coupling, according to this image resolution ratio video flowing is adjusted accordingly, specifically comprised image resolution ratio, code stream and bandwidth etc.
In the embodiment of the invention, when the video flowing display window diminishes, owing to selected the video flowing of suitable low code stream, low resolution to transmit and watched, thereby saved the network bandwidth, reduced the loss of decoding performance, promoted the performance utilance of playing main frame,, made that the broadcast of multiwindow, many pictures is more efficient keeping image relatively clearly under the situation; When the video flowing display window becomes big, system will select suitable high-resolution image to play automatically, promote image sharpness automatically, reach the purpose that the user " sees clearlyer ".
Fig. 2 shows the realization flow of the method for adjustment of video streaming image resolution ratio that second embodiment of the invention provides and code stream, and its concrete step is as described below:
In step S201, the size of video flowing display window is detected in real time.
In step S202, when the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window.
In step S203, obtain the image resolution ratio that video source is supported from video source.
In embodiments of the present invention, this step can be that the interactive mode that both sides shake hands realizes obtaining of image resolution ratio, do not repeat them here, but not in order to restriction the present invention.
In step S204, according to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported.
In step S205, the image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio.
Fig. 3 shows the realization flow of the method for adjustment of video streaming image resolution ratio that third embodiment of the invention provides and code stream, and its concrete step is as described below:
In step S301, preserve the image resolution ratio that video source is supported in advance.
In embodiments of the present invention, when carrying out the video flowing broadcast, promptly obtain the image resolution ratio of being supported in current video source, and be kept at video playing terminal.
In step S302, the size of video flowing display window is detected in real time.
In step S303, when the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window.
In embodiments of the present invention, this step can be that the interactive mode that both sides shake hands realizes obtaining of image resolution ratio, do not repeat them here, but not in order to restriction the present invention.
In step S304, call in advance the image resolution ratio that the video source of preserving is supported.
In step S305, according to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported.
In embodiments of the present invention, the mode of this coupling is: search from the database of preserving and call the image resolution ratio that video source is supported, acquire the image resolution ratio that the size with adjusted video flowing display window is complementary.
In step S306, the image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio.
In embodiments of the present invention, described video source is web camera, digital hard disc video recorder, digital video frequency server or other streaming media playing servers.
Above-mentioned only is specific embodiments of the invention, this not in order to the restriction the present invention.
Fig. 4 shows the structured flowchart of the Adjustment System of video streaming image resolution ratio that the embodiment of the invention provides and code stream, for convenience of explanation, only provided the part relevant among the figure with the embodiment of the invention, wherein, the Adjustment System of video streaming image resolution ratio and code stream can be built in software unit, hardware cell or the software and hardware combining unit of video playing terminal.
The size of 11 pairs of video flowing display windows of detection module detects in real time; When the size that detects described video flowing display window when described detection module 11 had the operation of adjustment, computing module 12 calculated the size of adjusted video flowing display window; The size of the adjusted video flowing display window that calculates according to described computing module 12, the image resolution ratio that matching module 13 match video sources are supported; The image resolution ratio that the video source that image resolution ratio sending module 14 obtains described matching module coupling is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio.
Wherein, being described video source with the corresponding video flowing of described image resolution ratio adjusts rear video stream to the parameter that comprises image resolution ratio and code stream, be after video source receives the image resolution ratio that obtains of coupling, according to this image resolution ratio video flowing is adjusted accordingly, specifically comprised image resolution ratio, code stream and bandwidth etc.
As an alternative embodiment of the invention, as shown in Figure 5, image resolution ratio acquisition module 15 obtains the image resolution ratio that video source is supported from video source.
As an alternative embodiment of the invention, as shown in Figure 6, image resolution ratio is preserved module 16 in advance and is preserved the image resolution ratio that video source is supported in advance, and calling module 17 calls and preserves the image resolution ratio that video source is supported in advance.In embodiments of the present invention, video source is web camera, digital hard disc video recorder or digital video frequency server.
Above-mentioned only is system embodiment of the present invention, and the functional description of its each module does not repeat them here as described in the above-mentioned method embodiment, but not in order to restriction the present invention.
In embodiments of the present invention, the size to the video flowing display window detects in real time; When the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window; According to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported; The image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio, when the size of video flowing display window is adjusted, can adjust by adaptive image resolution ratio and code stream video flowing, thereby strengthen the experience of user, promote the performance of video playing terminal under the multi-window picture the different images quality that produced because of the broadcast window size variation.。
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the method for adjustment of video streaming image resolution ratio and code stream is characterized in that described method comprises the steps:
Size to the video flowing display window detects in real time;
When the size that detects described video flowing display window has the operation of adjustment, calculate the size of adjusted video flowing display window;
According to the size of adjusted video flowing display window, the image resolution ratio that the match video source is supported;
The image resolution ratio that the video source that coupling is obtained is supported sends to video source, to obtain and the corresponding video flowing of described image resolution ratio, wherein, the corresponding video flowing of described and described image resolution ratio is that described video source is adjusted rear video stream to the parameter that comprises image resolution ratio and code stream.
2. the method for claim 1, it is characterized in that, it is described when the size that detects described video flowing display window has the operation of adjustment, calculate after the step of size of adjusted video flowing display window, also comprise the steps: before the described size, the step of the image resolution ratio that the match video source is supported according to adjusted video flowing display window
Obtain the image resolution ratio that video source is supported from video source.
3. the method for claim 1, it is characterized in that, it is described when the size that detects described video flowing display window has the operation of adjustment, calculate after the step of size of adjusted video flowing display window, also comprise the steps: before the described size, the step of the image resolution ratio that the match video source is supported according to adjusted video flowing display window
Call and preserve the image resolution ratio that video source is supported in advance.
4. as each described method of claim 1 to 3, it is characterized in that described video source is web camera, digital hard disc video recorder or digital video frequency server.
5. the Adjustment System of video streaming image resolution ratio and code stream is characterized in that described system comprises:
Detection module is used for the size of video flowing display window is detected in real time;
Computing module is used for calculating the size of adjusted video flowing display window when size that described detection module detects described video flowing display window has the operation of adjustment;
Matching module is used for the size according to the adjusted video flowing display window of described computing module calculating, the image resolution ratio that the match video source is supported; And
The image resolution ratio sending module, be used for the image resolution ratio that the video source that described matching module coupling obtains is supported is sent to video source, to obtain and the corresponding video flowing of described image resolution ratio, wherein, the corresponding video flowing of described and described image resolution ratio is that described video source is carried out adjusted video flowing to the parameter that comprises image resolution ratio and code stream.
6. system as claimed in claim 5 is characterized in that, described system also comprises:
The image resolution ratio acquisition module is used for obtaining the image resolution ratio that video source is supported from video source.
7. system as claimed in claim 5 is characterized in that, described system also comprises:
Image resolution ratio is preserved module in advance, is used for preserving in advance the image resolution ratio that video source is supported; And calling module, be used to call described image resolution ratio and preserve module in advance and preserve the image resolution ratio that video source is supported in advance.
8. as each described system of claim 5, it is characterized in that described video source is web camera, digital hard disc video recorder or digital video frequency server.
9. video playing terminal that comprises the Adjustment System of each described video streaming image resolution ratio of claim 5 to 8 and code stream.
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