> On Aug 28, 2015, at 12:10 PM, Carl Eugen Hoyos <[email protected]> wrote: > > Felix Baier <felixbaier-at-yahoo.de <at> ffmpeg.org> writes: > >> I changed “-vcodec mpeg4 -qscale 2” to “-vcodec mpeg4 -q:v 2” >> after I got a notification that the first version was >> ambiguous. > > For a video-only file? Yes, it’s video only.
> >> ffmpeg -r 25 -f dshow -s 640x480 -i video="Microsoft LifeCam HD-5000” > > Use -framerate 25 as explained by Roger. Ok, thanks! > >> -vcodec mpeg4 -q:v 2 -f segment -segment_time 3600 >> -reset_timestamps 1 > >> -segment_start_number 1 -segment_format avi > > Are these necessary? Yes, I want to save in junks of 1 hour, so that at least part of the video material is saved if the camera has a problem. In particular, the real time buffer of the camera is sometimes used up and frames are lost, which I assume might be worse if I record in one file. > >> -r 25 > > Please remove this. > >> c:\Users\Desktop\out%%03d.avi > > Please do not top-post here, Carl Eugen Carl Eugen and Roger--Thanks for your answers. Very helpful! This is a working version of the code, just for future reference: ffmpeg -f dshow -framerate 20 -s 640x360 -i video="Microsoft LifeCam HD-5000" -vcodec mpeg4 -q:v 2 -f segment -segment_time 3570 -reset_timestamps 1 -segment_start_number 1 -segment_format avi c:\Users\_%%03d.avi > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
