Opencv下视频的读写
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1. 视频结构
一个视频由压缩格式(container, eg. avi, mkv...)和封装格式(codec, eg. H264, DIVX)组成.
详细解释:源自[1]
For start, you should have an idea of just how a video file looks. Every video file in itself is a container. The type of the container is expressed in the files extension (for example avi, mov or mkv). This contains multiple elements like: video feeds, audio feeds or other tracks (like for example subtitles). How these feeds are stored is determined by the codec used for each one of them. In case of the audio tracks commonly used codecs are mp3 or aac. For the video files the list is somehow longer and includes names such as XVID, DIVX, H264 or LAGS (Lagarith Lossless Codec). The full list of codecs you may use on a system depends on just what one you have installed.
2. Linux下opencv对container和codec的支持
Reference
[1] Creating a video with OpenCV
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