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Hallo World FFMPEG command not working

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Jacques Koorts
Hallo World FFMPEG command not working
on May 21, 2012 at 7:30:58 pm

I'm following FFMPEG's doc:

[QUOTE]To set the video bitrate of the output file to 64kbit/s:

ffmpeg -i input.avi -b:v 64k output.avi[/QUOTE]

So here's my attempt:

ffmpeg -i seed.avi -b:v 63k ouput.avi

This is the error I get:

timebase 33333/1000000 not supported by MPEG 4 standard, the maximum admitted value for the timebase denominator is 65535

So much for documentation.


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Jacques Koorts
Re: Hallo World FFMPEG command not working
on May 21, 2012 at 7:41:01 pm

here the full output. (works for 0.82 though)


ffmpeg version 0.8.1-4:0.8.1-0ubuntu1, Copyright (c) 2000-2011 the Libav developers
built on Mar 22 2012 05:09:06 with gcc 4.6.3
This program is not developed anymore and is only provided for compatibility. Use avconv instead (see Changelog for the list of incompatible changes).
[avi @ 0x1f0c7a0] sample size (1) != block align (2)
Input #0, avi, from 'seed.avi':
Metadata:
encoder :
maker : NIKON
model : COOLPIX S3000
creation_time : 2010-08-25 12:06:44
Duration: 00:00:49.26, start: 0.000000, bitrate: 11050 kb/s
Stream #0.0: Video: mjpeg, yuvj422p, 640x480, 30 tbr, 30 tbn, 30 tbc
Stream #0.1: Audio: pcm_s16le, 22050 Hz, 1 channels, s16, 352 kb/s
Incompatible pixel format 'yuvj422p' for codec 'mpeg4', auto-selecting format 'yuv420p'
[buffer @ 0x1f263e0] w:640 h:480 pixfmt:yuvj422p
[avsink @ 0x1f14600] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0x1f14d20] w:640 h:480 fmt:yuvj422p -> w:640 h:480 fmt:yuv420p flags:0x4
Incompatible sample format 's16' for codec 'ac3', auto-selecting format 'flt'
[mpeg4 @ 0x1f27180] timebase 33333/1000000 not supported by MPEG 4 standard, the maximum admitted value for the timebase denominator is 65535
Output #0, avi, to 'ouput.avi':
Stream #0.0: Video: mpeg4, yuv420p, 640x480, q=2-31, 200 kb/s, 90k tbn, 30 tbc
Stream #0.1: Audio: ac3, 22050 Hz, 1 channels, flt, 200 kb/s
Stream mapping:
Stream #0.0 -> #0.0
Stream #0.1 -> #0.1
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height


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Jacques Koorts
Re: Hallo World FFMPEG command not working
on May 21, 2012 at 7:42:14 pm

sorry no 0.82 same err


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Reuben Martin
Re: Hallo World FFMPEG command not working
on May 22, 2012 at 4:59:56 am

It means your source file is corrupt. The frame rate denominator is way out of bounds. Manually specify the input source frame rate to override it.


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