Extract raw keyframe and non keyframes out of a video
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When extracting individual frames, FFmpeg is typically designed to extract full frames. However, extracting the frames as they are stored in the Codec is sometimes helpful when debugging.
Setting the -break_non_keyframes 1 parameter instructs ffmpeg to extract frames as raw binary data. Note that, for an H.264 input video, these images are not jpeg but the raw H.264 I/B/P frames. As far as I can tell, this is the only way to extract non-keyframes from FFmpeg.
