2017-10-25 22:59 GMT+02:00 Aviv Hurvitz <[email protected]>: > I have an USB3 camera module that outputs an MJPEG stream. > > I recorded it with “-v:c copy” argument to an avi file.
This records a variable frame rate file because your camera - most likely - is unable to keep constant frame rate. > Now I want to reencode it to a more compact file in h264/mp4 > format. If I do that with default arguments, I get a file with more > frames than the original! FFmpeg is unable to write - valid - variable frame rate mp4 files, I suggest you output to mkv. > Also the FPS – as reported by VLC – is 40 fps whereas I know I > was recording at about 15 fps (approximately, it varies based on > lighting in this camera) Yes, it varies indicating variable frame rate. Carl Eugen (Yes, of course: avi does record timestamps, if it would not, you would not see duplicated frames) _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
