wrong duration for 3gp files
While I was testing to convert 3gp files I saw that the duration and bitrate is wrongly displayed. A file of 00:00:09.0 would get 00:01:40.0 as duration. I used the latest cvs build 4756 for this. But I rembered that with older version the duration was correctly displayed so I recompiled a snapshot of 20050420 and that version correctly displayed the 3gp file as 00:00:09.0. The 3gp was created using build 4756. Is this a bug? or something I did wrong? Tim Output 4756: ffmpeg version 0.4.9-pre1, build 4756, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-a52 --enable-amr_nb --enable-amr-fixed --enable-amr_wb --enable-pp --enable-gpl built on Jun 22 2005 13:20:51, gcc: 3.3.4 Input #0, mov,mp4,m4a,3gp,3g2, from '/home/tim/conversi/watchfolders/mp4-300k/outgoing/converted/dakskat2er.wmv-3m.3gp': Duration: 00:01:40.0, start: 0.000000, bitrate: 5 kb/s Stream #0.0: Video: mpeg4, yuv420p, 176x144, 10.00 fps Stream #0.1: Audio: amr_nb, 8000 Hz, mono Output 4752: ffmpeg version 0.4.9-pre1, build 4752, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-mp3lame --enable-libogg --enable-faad --enable-faac --enable-a52 --enable-pp --enable-amr_nb --enable-amr_nb-fixed --enable-amr_wb --enable-gpl built on Jun 22 2005 13:50:25, gcc: 3.3.4 Input #0, mov,mp4,m4a,3gp,3g2, from '/home/tim/conversi/watchfolders/mp4-300k/outgoing/converted/dakskat2er.wmv-3m.3gp': Duration: 00:00:09.0, start: 0.000000, bitrate: 64 kb/s Stream #0.0: Video: mpeg4, 176x144, 10.00 fps Stream #0.1: Audio: amr_nb, 8000 Hz, mono
On 6/22/05, Tim de Jong <timj at icemobile.com> wrote:
While I was testing to convert 3gp files I saw that the duration and bitrate is wrongly displayed. A file of 00:00:09.0 would get 00:01:40.0 as duration. I used the latest cvs build 4756 for this. But I rembered that with older version the duration was correctly displayed so I recompiled a snapshot of 20050420 and that version correctly displayed the 3gp file as 00:00:09.0. The 3gp was created using build 4756. Is this a bug? or something I did wrong?
The problem seems to be with the native time base stuff checked in 4/30/05. It causes this problem to happen with many movie formats. The bug also affects the calculation of bitrate. I submitted a similar bug reported to ffmpeg-devel a few days ago.
Tim
Output 4756: ffmpeg version 0.4.9-pre1, build 4756, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-mp3lame --enable-libogg --enable-vorbis --enable-faad --enable-faac --enable-a52 --enable-amr_nb --enable-amr-fixed --enable-amr_wb --enable-pp --enable-gpl built on Jun 22 2005 13:20:51, gcc: 3.3.4 Input #0, mov,mp4,m4a,3gp,3g2, from '/home/tim/conversi/watchfolders/mp4-300k/outgoing/converted/dakskat2er.wmv-3m.3gp': Duration: 00:01:40.0, start: 0.000000, bitrate: 5 kb/s Stream #0.0: Video: mpeg4, yuv420p, 176x144, 10.00 fps Stream #0.1: Audio: amr_nb, 8000 Hz, mono
Output 4752: ffmpeg version 0.4.9-pre1, build 4752, Copyright (c) 2000-2004 Fabrice Bellard configuration: --enable-mp3lame --enable-libogg --enable-faad --enable-faac --enable-a52 --enable-pp --enable-amr_nb --enable-amr_nb-fixed --enable-amr_wb --enable-gpl built on Jun 22 2005 13:50:25, gcc: 3.3.4 Input #0, mov,mp4,m4a,3gp,3g2, from '/home/tim/conversi/watchfolders/mp4-300k/outgoing/converted/dakskat2er.wmv-3m.3gp': Duration: 00:00:09.0, start: 0.000000, bitrate: 64 kb/s Stream #0.0: Video: mpeg4, 176x144, 10.00 fps Stream #0.1: Audio: amr_nb, 8000 Hz, mono
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Hi On Wednesday 22 June 2005 14:01, Tim de Jong wrote:
While I was testing to convert 3gp files I saw that the duration and bitrate is wrongly displayed. A file of 00:00:09.0 would get 00:01:40.0 as duration. I used the latest cvs build 4756 for this. But I rembered that with older version the duration was correctly displayed so I recompiled a snapshot of 20050420 and that version correctly displayed the 3gp file as 00:00:09.0. The 3gp was created using build 4756. Is this a bug? or something I did wrong?
if this problem is still occuring with latest cvs then please upload the which shows a wrong duration [...] -- Michael
participants (3)
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ffmpeg.php＠gmail.com -
michaelni＠gmx.at -
timj＠icemobile.com