我这里设置的参数是Baseline Profile,所以编码后没有B帧,将编码后的数据保存分析后发现,第一次编码的时候会有4个NAl,分别是SPS、PPS、SEI、I帧,也即分别是00 00 00 01 67、 00 00 00 01 68、 00 00 01 06、00 00 01 65开头的四个数据段,这里注意的是SEI和I帧的开头貌似X264中就是00 00 01的起始头...
< (**open-only**) If non-zero, create new OpenCL context and bind it to current thread. The OpenCL context created with Video Acceleration context attached it (if not attached yet) for optimized GPU data copy between HW accelerated decoder and cv::UMat.CAP_PROP_OPEN_TIMEOUT_MSEC=53,/...
< Positive index indicates that returning extra data is supported by the video back end. This can be retrieved as cap.retrieve(data, <returned index>). E.g. When reading from a h264 encoded RTSP stream, the FFmpeg backend could return the SPS and/or PPS if available (if sent in reply...
System information (version) OpenCV => 4.5.2 Operating System / Platform => linux Compiler => gcc Detailed description I built opencv_contrib_python by myself. Here is the build information Extra dependencies: m pthread cudart_static dl ...