[FFmpeg-user] adding -ss and -t loses the audio stream on the output

Tim Nicholson tim.nicholson at bbc.co.uk
Wed Feb 1 16:17:34 CET 2012

On 01/02/2012 12:35, Clément Bœsch wrote:
> On Wed, Feb 01, 2012 at 12:31:36PM +0000, Tim Nicholson wrote:
>> On 24/01/2012 20:05, Carl Eugen Hoyos wrote:
>>> Tim Nicholson<tim.nicholson<at>   bbc.co.uk>   writes:
>>>> So I have a command line to make two versions of a file that works
>>>> perfectly until I add in "-ss time -t duration". Then although
>>>> everything seems to work as normal, and the created files are the right
>>>> duration they lack the audio stream
>>> Is this also reproducible with a shorter command line (without filters)?
>>> Are external libraries (x264, faac) necessary to reproduce the problem?
>> I get the same result when changing the ouput to dvvideo/pcm16 and
>> with only the lavi filter for doing the audio mapping.
>> If I remove the lavi filter I get the audio so it seems to be that
>> which is causing the problem.
> I have some pending patches to fix this issue in some filters. I'll push
> them in a day or two.

Thanks Clément, I saw you proposals after making my original post here 
and wondered if they might be related.


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