#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------------------+------------------------- Reporter: Andrew | Owner: Type: defect | Status: open Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac after av_write_header stream | Blocked By: time_base | Reproduced: 0 Blocking: | Analyzed: 0 | -------------------------------------------------+------------------------- Comment (by Andrew):

Please add complete, uncut output and command line of the failing command.

Ok, but with another source aac file. $ ./ffmpeg -debug 1 -i /tmp/track.m4a -acodec copy -y /tmp/test.avi > /tmp/ffmpeg_m4a_to_avi.txt 2>&1 $ ./ffmpeg -debug 1 -i /tmp/track.m4a -acodec copy -y /tmp/test.mov > /tmp/ffmpeg_m4a_to_mov.txt 2>&1 $ ./ffprobe -show_format -show_streams /tmp/test.mov > /tmp/ffprobe_mov.txt 2>&1 $ ./ffprobe -show_format -show_streams /tmp/test.avi > /tmp/ffprobe_avi.txt 2>&1 std{out,err} commands outputs see into the attachment. -- Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/253#comment:2> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------------------+------------------------- Reporter: Andrew | Owner: Type: defect | Status: open Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac after av_write_header stream | Blocked By: time_base | Reproduced: 0 Blocking: | Analyzed: 0 | -------------------------------------------------+------------------------- Comment (by rhuddusa): I think I am seeing the same issue , trying to convert to AC3 inside AVI container. Regardless if I use 2 channel or 6 channel, i get 4/125 for audio stream time_base. unfortunately, when playing on an xbox360, only the 2 channel will play, and the 6 channel will fail. i have another video which does play on the xbox360 (which I did not encode), it has 6 channels, sample_rate=48000.000000, and time_base=1/56000. so it is possible to play 6 channel ac3 on the xbox360 in the avi format. this is the failing video: ffmpeg -i '/mnt/storage/tmp/Input.mkv' -map 0.0 -vcodec libxvid -vtag XVID -qmin 1.1 -qmax 45 -b 10000k -bt 4500k -maxrate 15000k -bufsize 20000k -level 5 -bf 1 -vsync 1 -sn -async 1000 -map 0.1 -acodec ac3_fixed -ac 6 -ab 448k -ar 48000 -channel_layout 1551 -f avi -y 'Output.avi' ffmpeg version N-31897-g10b7b4a, Copyright (c) 2000-2011 the FFmpeg developers built on Aug 14 2011 22:10:45 with gcc 4.4.3 configuration: --disable-static --enable-shared --enable-gpl --enable- nonfree --disable-stripping --enable-postproc --enable-runtime-cpudetect --enable-libfaac --enable-libmp3lame --enable-zlib --enable-libvorbis --enable-libopenjpeg --enable-libspeex --enable-libdirac --enable- libtheora --enable-libschroedinger --enable-libx264 --enable-libvpx --enable-libxvid --disable-ffserver libavutil 51. 12. 0 / 51. 12. 0 libavcodec 53. 10. 0 / 53. 10. 0 libavformat 53. 7. 0 / 53. 7. 0 libavdevice 53. 3. 0 / 53. 3. 0 libavfilter 2. 31. 1 / 2. 31. 1 libswscale 2. 0. 0 / 2. 0. 0 libpostproc 51. 2. 0 / 51. 2. 0 [matroska,webm @ 0x2557640] Estimating duration from bitrate, this may be inaccurate Seems stream 0 codec frame rate differs from container frame rate: 47.95 (20000000/417083) -> 23.98 (24000/1001) Input #0, : Duration: 00:55:41.25, start: 0.000000, bitrate: 1536 kb/s Stream #0.0(eng): Video: h264 (High), yuv420p, 1280x720, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default) Stream #0.1(eng): Audio: dca (DTS), 48000 Hz, 5.1, s16, 1536 kb/s (default) [buffer @ 0x255c740] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param: Output #0, avi,: Metadata: Stream #0.0(eng): Video: mpeg4, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=1-45, 10000 kb/s, 23.98 tbn, 23.98 tbc (default) Stream #0.1(eng): Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s (default) Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 --------------------------------- ffprobe -show_streams Output.avi [mpeg4 @ 0xc9a6c0] Invalid and inefficient vfw-avi packed B frames detected Input #0, avi, : Metadata: encoder : Lavf53.7.0 Duration: 00:03:16.35, start: 0.000000, bitrate: 10264 kb/s Stream #0.0: Video: mpeg4 (Advanced Simple Profile), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 23.98 tbr, 23.98 tbn, 23.98 tbc Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/s [STREAM] index=0 codec_name=mpeg4 codec_long_name=MPEG-4 part 2 codec_type=video codec_time_base=1001/24000 codec_tag_string=XVID codec_tag=0x44495658 width=1280 height=720 has_b_frames=1 sample_aspect_ratio=1:1 display_aspect_ratio=16:9 pix_fmt=yuv420p level=5 r_frame_rate=24000/1001 avg_frame_rate=0/0 time_base=1001/24000 start_time=0.000000 duration=196.321125 nb_frames=4707 [/STREAM] [STREAM] index=1 codec_name=ac3 codec_long_name=ATSC A/52A (AC-3) codec_type=audio codec_time_base=0/1 codec_tag_string=[0] [0][0] codec_tag=0x2000 sample_rate=48000.000000 channels=6 bits_per_sample=0 r_frame_rate=0/0 avg_frame_rate=0/0 time_base=4/125 start_time=0.000000 duration=196.352000 nb_frames=6136 [/STREAM] -- Ticket URL: <http://avcodec.org/trac/ffmpeg/ticket/253#comment:4> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------------------+------------------------- Reporter: Andrew | Owner: Type: defect | Status: open Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac after av_write_header stream | Blocked By: time_base | Reproduced: 0 Blocking: | Analyzed: 0 | -------------------------------------------------+------------------------- Comment (by rhuddusa): i hope my verbose posting doesn't make you think i know what i'm really doing here :) how would i check for the WAVEFORMATEX header in an existing video file? -- Ticket URL: <http://avcodec.org/trac/ffmpeg/ticket/253#comment:6> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------------------+------------------------- Reporter: Andrew | Owner: Type: defect | Status: open Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac after av_write_header stream | Blocked By: time_base | Reproduced: 0 Blocking: | Analyzed: 0 | -------------------------------------------------+------------------------- Comment (by rhuddusa): unfortunately, i don't have a public sample available right now, but when i do, i will open a new ticket and attach a short sample only other information i can add, is that if i do a ffmpeg with vcodec copy, acodec copy, on my working AVI/ac3 6 channel file [STREAM] index=1 codec_name=ac3 codec_long_name=ATSC A/52A (AC-3) codec_type=audio codec_time_base=0/1 codec_tag_string=[0] [0][0] codec_tag=0x2000 sample_rate=48000.000000 channels=6 bits_per_sample=0 r_frame_rate=0/0 avg_frame_rate=0/0 time_base=1/56000 start_time=0.000000 duration=N/A nb_frames=303959040 [/STREAM] the output is with format avi: [STREAM] index=1 codec_name=ac3 codec_long_name=ATSC A/52A (AC-3) codec_type=audio codec_time_base=0/1 codec_tag_string=[0] [0][0] codec_tag=0x2000 sample_rate=48000.000000 channels=6 bits_per_sample=0 r_frame_rate=0/0 avg_frame_rate=0/0 time_base=4/125 start_time=0.000000 duration=2475.520000 nb_frames=77360 [/STREAM] and the output is with format mov: [STREAM] index=1 codec_name=ac3 codec_long_name=ATSC A/52A (AC-3) codec_type=audio codec_time_base=0/1 codec_tag_string=ac-3 codec_tag=0x332d6361 sample_rate=48000.000000 channels=6 bits_per_sample=0 r_frame_rate=0/0 avg_frame_rate=0/0 time_base=1/48000 start_time=0.000000 duration=2453.248000 nb_frames=76664 [/STREAM] so that's my theory that this is specific to avi, i get that time_base=4/125, but works correctly under mov format where i get a time_base=1/48000. i can't find a way to change the resulting avi time_base value but unfortunately, the xbox 360 only takes 6 channel audio with AVI and ac3 sorry to complain without an actual test case ... i'll work on providing one -- Ticket URL: <http://avcodec.org/trac/ffmpeg/ticket/253#comment:8> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------------------+------------------------- Reporter: Andrew | Owner: Type: defect | Status: open Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac after av_write_header stream | Blocked By: time_base | Reproduced: 0 Blocking: | Analyzed: 0 | -------------------------------------------------+------------------------- Comment (by cehoyos): I would like to support you on this issue (it was discussed very often in the past, if it is really true that the xbox only supports broken avi files, there at least is a chance that the relevant FFmpeg code gets changed), but you absolutely have to open a new ticket! -- Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/253#comment:10> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker

#253: invalid stream time_base for avi/aac, after av_write_header() -------------------------------------+------------------------------------- Reporter: Andrew | Owner: Type: defect | Status: closed Priority: normal | Component: avformat Version: git-master | Resolution: Keywords: avi aac | needs_more_info after av_write_header stream | Blocked By: time_base | Reproduced by developer: 0 Blocking: | Analyzed by developer: 0 | -------------------------------------+------------------------------------- Changes (by cehoyos): * cc: rhuddusa (added) * status: open => closed * resolution: => needs_more_info Comment: Concerning the original issue, I am closing this ticket, please reopen if you can provide the missing information. Concerning the problem with multichannel ac3-in-avi on xbox 360: I still believe this could be fixed (easily), but only if more information can be provided. -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/253#comment:12> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker