On 23/09/14 19:47, Carl Eugen Hoyos wrote: > César Sepúlveda <csepulveda <at> mediastre.am> writes: > >> $ ffmpeg -y -i gop_10.mp4 -acodec aac -strict -2 >> -vcodec libx264 -ss 5.00500 -vframes 60 -level 31 >> -profile:v baseline 1.mp4 > > You may try -vsync 0 or another container because > our mov muxer tends to duplicate the first frame > to produce cfr output. >
Interesting. I have just been trying to pin down a similar issue. I have also found using vframes problematical in that you tend to get inconsistent mvhd and mdhd atoms unless you also use -shortest, while using -t is fine. Trying to understand why it should need to duplicate a frame to get cfr though. Sounds like it could do with a patch. > Carl Eugen > [...] -- Tim. Key Fingerprint 38CF DB09 3ED0 F607 8B67 6CED 0C0B FC44 8B0B FC83 _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
