如何从 a.yuv 视频文件中提取某些帧并使用 FFmpeg、OpenCV 和 python 创建新视频？

Question

I have a.yuv video file and a list containing some frame numbers. I need to make a new video with the frame numbers in the list and another video with the frame numbers that are not on the list. How can I do this using FFmpeg and subprocess module in python? I'm also using OpenCV in the program. I need the new videos in both.yuv and.avi formats.

Answer 1

Something like this:

Open the YUV file in `rb` mode.
Open `inlist.yuv` and `notinlist.yuv` in `wb` mode.
Zero frame counter
Repeat until no more data in input file
    Read `framesize` bytes
    if framenumber in list:
        write to "inlist.yuv"
    else:
        write to "notinlist.yuv"
    Increment frame counter
Close files

As Rotem suggests, use ffmpeg to convert your 2 output files to AVI at the end.