Carl - you are right! mkv works.
On Wed, Oct 25, 2017 at 11:40 PM, Carl Eugen Hoyos <[email protected]> wrote: > 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". _______________________________________________ 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".
