[FFmpeg-user] amerge multiple inputs with filter_complex

[Madovsky]

>>> Carl Eugen Hoyos <cehoyos <at> ag.or.at> writes:
>>>
>>>> >   Duration: 00:02:27.24, start: 0.023220, bitrate: 353 kb/s
>>>>
>>>> Your first overlay is 2:27
>>>>
>>>> >   Duration: 00:02:30.81, start: 0.023220, bitrate: 288 kb/s
>>>>
>>>> Your second overlay is 2:30
>>>>
>>>> You will have to add a "-t" option to your command line if you don't 
>>>> want your output file to have infinite length.
>>>> (Try -t 2:27)
>>>
>>>>From the amerge documentation:
>>> If inputs do not have the same duration, the output will stop with the 
>>> shortest. If you want more than 2:27 audio in your output file use the 
>>> apad filter.
>>>
>>> Carl Eugen
>>
>> Not true,
>> when I remove the PNG image from the filter_complex everything
>> is ok. also I'd like to use this command for undefined length like
>> live stream and so stop when live stream is stopped.
>
> also I replaced the png with another mp4 stream with different time (2:32)
> and it works. So logically the problem is coming from the fact that a loop 
> image
> is maybe considered to contain an audio stream...

Carl,

I tried to use -t 2:27 and got
Invalid duration specification for t: 2:27