[FFmpeg-user] Get the codec used

[Rossana Guerra]

2012/5/24 Carl Eugen Hoyos <cehoyos at ag.or.at>

> Rossana Guerra <guerra.rossana <at> gmail.com> writes:
>
> > Hello, I'd like to get te codec being used by an avi file.
> > I thought it was with the -i option, but it wasn't i used this option
> > with twi .AVI that have different codec and I don't see the difference.
>
> (Command line and complete, uncut console output missing.)
> ffmpeg -i is supposed to give you many informations about the input
> file, including the codec used to encode.
>
> Carl Eugen
>

Hi Carl, this is the output for the following files: video3.avi and
video1.avi

 ffmpeg -i  video3.avi

[mp3 @ 0x25f9c00] Header missing

Seems stream 0 codec frame rate differs from container frame rate: 30000.00
(30000/1) -> 29.97 (30000/1001)
Input #0, avi, from 'video3.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.10.1 (build 2366/release)
  Duration: 00:34:10.71, start: 0.000000, bitrate: 1179 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 720x400 [PAR 1:1 DAR 9:5], 29.97
fps, 29.97 tbr, 29.97 tbn, 30k tbc
    Stream #0.1: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
At least one output file must be specified


ffmpeg -i  video1.avi

Seems stream 0 codec frame rate differs from container frame rate: 30000.00
(30000/1) -> 23.98 (24000/1001)
Input #0, avi, from 'video1.avi':
  Metadata:
    encoder         : VirtualDubMod 1.5.10.1 (build 2366/release)
  Duration: 00:23:18.52, start: 0.000000, bitrate: 1308 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 720x400 [PAR 1:1 DAR 9:5], 23.98
fps, 23.98 tbr, 23.98 tbn, 30k tbc
    Stream #0.1: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
At least one output file must be specified


However if I try to concatenate them with mencoder it doesn't allow due to
differents codecs.

Thanks for your help.

Rossana

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