ffmpeg, libav: Recording RTSP at reduced frame rate without re-encoding

Question

I'm trying to record a chunk of an RTSP video stream (say 5 minutes) to an mp4 file. The RTSP video stream is H.264 encoded and at 30 FPS. I'd like to record it at 10 FPS by dropping frames, without re-encoding (benefit: uses less CPU, lossless).

• Is this possible?
• How do I do this? Examples using the libav libraries are most useful since I'm writing an application, but an ffmpeg command is also helpful.

Thanks in advance.

question from:https://stackoverflow.com/questions/65601879/ffmpeg-libav-recording-rtsp-at-reduced-frame-rate-without-re-encoding

Answer 1

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