I have an oldish build of FFmpeg that I can't easily change.
We use FFmpeg to find the duration of video and sound files. So far it has been working wonderfully.
Recently on an uploaded file, FFmpeg has reported a 30 second file as being 5 minutes 30 seconds in length.
Could it be something wrong with the file rather than FFmpeg?
If I use FFmpeg to convert to another file, the duration is restored.
In case it matters, ffmpeg -i 'path to the file' produces:
FFmpeg version Sherpya-r15618, Copyright (c) 2000-2008 Fabrice Bellard, et al.
libavutil 49.11. 0 / 49.11. 0
libavcodec 52. 0. 0 / 52. 0. 0
libavformat 52.22. 1 / 52.22. 1
libavdevice 52. 1. 0 / 52. 1. 0
libswscale 0. 6. 1 / 0. 6. 1
libpostproc 51. 2. 0 / 51. 2. 0
built on Oct 14 2008 23:43:47, gcc: 4.2.5 20080919 (prerelease) [Sherpya]
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'H:\path\to\file.mov':
Duration: 00:05:35.00, start: 0.000000, bitrate: 1223 kb/s
Stream #0.0(eng): Audio: aac, 44100 Hz, stereo, s16
Stream #0.1(eng): Video: h264, yuv420p, 720x576, 25.00 tb(r)
Must supply at least one output file
It's that very command I use to then extract the duration with RegEx.
Does anyone have a nice application that can do what I'm trying above but get it right 100% of the time?
Best Answer
Check it with a newer version of ffmpeg (you don't have to replace your build), and if it gives the same duration you can probably blame the file.