input: 90k tbn, 59.94 tbc output: 30k tbn, 29.97 tbc
try explicitly specifying the output frame rate -c:v h264 -r 29.97 > On Sep 26, 2018, at 7:27 26PM, sean darcy <[email protected]> wrote: > > I'm transcoding mpeg2 -> x264. > > Stream #0:0[0x64]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), > yuv420p(tv, progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 > fps, 59.94 tbr, 90k tbn, 59.94 tbc > > When I run ffmpeg: > > ffmpeg -i in.mpg -map 0:0 -map 0:2 -c:v libx264 -tune film -preset slow -crf > 22 -c:a copy out.mp4 > > almost half the frames are dups: > > frame=394550 fps=135 q=-1.0 Lsize= 2218652kB time=03:39:24.71 > bitrate=1380.6kbits/s dup=175142 drop=0 speed=4.51x > > Does this really mean that there were 175,142 frames with exact copies ? So > only ( 394,550 less 175,142 ) unique frames ? > > The output looks fine. The input looks fine. What are these duplicated > frames? Is it an interlacing issue ? But the input is progressive. > > Does it have to do with this warning: > > [mp4 @ 0x921c80] track 1: codec frame size is not set > Output #0, mp4, to 'out.mp4': > Metadata: > encoder : Lavf58.18.103 > Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 720x480 > [SAR 8:9 DAR 4:3], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc > Metadata: > encoder : Lavc58.31.100 libx264 > > Puzzled. > > _______________________________________________ > 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".
