[FFmpeg-user] Setting the default input framerate in conjunction with -f concat -i filelist.txt

[Davide]

Thank you a lot!
I tried /-r 30/ but I placed it before the /-f concat/ and it failed!
Placing it after /-f concat/ and before/-i/...
it worked as expected!

Davide

On 19/08/2017 13:36, Evert Vorster wrote:
> Hi there.
>
> Just place -r 30 in front if the -i, and it all should work as you intend.
>
> -Evert-
>
> On 19 August 2017 at 10:47, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>
>> 2017-08-18 23:34 GMT+02:00 Davide <davide.denardis at gmail.com>:
>>> Dear you all,
>>>
>>> I am trying to set the input framerate of a sequence of images:
>>>
>>> if I am working with a single image sequence everything works properly:
>>> *ffmpeg -framerate 30 -i folder01/img%05d.jpeg ......*
>>>
>>> then, because I have more folders
>>> (and I was unable to get the -i
>>> concat:filesequence1|filesequence2 working)
>> Please elaborate, if the mjpeg demuxer is not
>> autodetected, force jpeg pipe with "-f jpeg_pipe".
>> (Or are these different files, not just jpeg?)
>>
>>> I tried to use:
>>>
>>> *ffmpeg -framerate 30 -f concat -safe 0 -i filelist.txt .....
>>> *but I receive a:
>>> *Option framerate not found.
>>>
>>> *then if I omit the "-framerate 30", everything runs smoothly, but ffmpeg
>>> defaults to a 25 fps value for the input image sequences.
>>>
>>> Any ideas on how to fix this?
>> You are describing a missing feature, the concat demuxer does
>> not allow to forward options to the actual demuxers.
>>
>> Carl Eugen
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>
>