Thanks for your reply, The stream info for this file is as follows. As you can see the DAR starts as 16:9, but the aspect changes several times during the recording, x264 doesn't follow the changes, stays at 16:9.
If I force the SAR as you suggest the output is narrower than 4:3 and still doesn't change with incoming aspect changes. Input #0, mpegts, from '00001.ts': Duration: 00:59:49.47, start: 4529.649200, bitrate: 1477 kb/s Program 132 Stream #0:0[0x18a1]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv), 544x576 [SAR 32:17 DAR 16:9], max. 15000 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x18a2](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s Stream #0:2[0x18a3](eng): Audio: mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p Stream #0:3[0x18a6](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006) If I analyse the stream 5 minutes into the programme, like so: ffmpeg -loglevel quiet -ss 00:05:00 -i "00001.ts" -t 10 -c copy -avoid_negative_ts 1 -f nut pipe:1 | ffmpeg -hide_banner -i pipe:0 Then the video stream is as follows: Stream #0:0: Video: mpeg2video (Main) (mpg2 / 0x3267706D), yuv420p(tv), 544x576 [SAR 24:17 DAR 4:3], max. 15000 kb/s, SAR 32:17 DAR 16:9, 25 fps, 25 tbr, 90k tbn, 50 tbc So it is meant to show as 4:3 here. I'm assuming the 2 sets of SAR/DAR are for container and stream which is why it still shows as 16:9 after ffmpeg processing ? On 25/05/2016 08:10, chronek wrote: > Maybe your source not have sar 1:1... setdar will not change > resolution, it will change only information about aspectratio and some > players not read desired aspect ratio... Best try change to resolution > what yuou want and setsar for it... ( -vf scale=x:y,setsar=1 ) > > W dniu 2016-05-25 o 09:00, Richard F pisze: >> Hi list, >> >> I have a number of MPEG2 TS DVB recordings that have aspect ratio >> changes - e.g. older films or 4:3 programmes that have 16:9 >> continuity, trailers, adverts etc. >> >> I want to transcode to H264 using ffmpeg (3.02), but the output >> aspect ratio does not follow the source when using the H264 codec. >> But the aspect ratio does follow when using the xvid/mp4 codec. >> I need x264 not mp4. >> The problem is that (I think) the container DAR or SAR stays at 16:9 >> all the way through but the stream SAR or DAR doesn't follow the >> source for whatever reason >> >> Is there a way to make x264 output follow the source aspect ratio at >> the stream level ? >> >> Failing example : >> ffmpeg -y -i 00001.ts -map 0:0 -map 0:1 -map 0:3 -c:v libx264 -preset >> veryfast -profile:v high -level 4.0 -crf 20 -flags +loop -flags +ilme >> -vf yadif=0:-1:0 -c:a:0 aac -b:a:0 128k -c:s copy -f mpegts file-1.ts >> (same if I take out the profile and deinterlace settings) >> >> Working example (but large file and not so good quality, even if I >> could use it): >> ffmpeg -y -i 00001.ts -map 0:0 -map 0:1 -map 0:3 -c:v libxvid -q:v 3 >> -c:a:0 aac -b:a:0 128k -c:s copy -f mpegts file-1.ts >> >> If I add -vf setdar=dar=4/3, I can force the x264 version to be 4/3 >> but then all parts of the recording are always 4/3 which is also wrong. >> >> Behaviour is the same on VLC player, ffplay, and Kodi. >> >> Appreciate any pointers >> Thanks >> Richard >> >> >> >> _______________________________________________ >> ffmpeg-user mailing list >> ffmpeg-user@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >> >> To unsubscribe, visit link above, or email >> ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".