On Sat, Jun 11, 2022 at 12:02 PM Michael Koch
wrote:
> Am 11.06.2022 um 11:46 schrieb Nicolas George:
> > Michael Koch (12022-06-11):
> >> I always get this error message:
> >> Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1
> matches
> >> no streams.
> > Where did you find
Am 11.06.2022 um 11:46 schrieb Nicolas George:
Michael Koch (12022-06-11):
I always get this error message:
Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1 matches
no streams.
Where did you find this "[number]" syntax, and has it ever worked for
you?
yes, it works after I
Am 11.06.2022 um 11:45 schrieb Gyan Doshi:
On 2022-06-11 03:02 pm, Michael Koch wrote:
I want to concat two audio files. What's wrong with this command line?
ffmpeg -i birds1.wav -i birds1.wav -lavfi [0][1]concat=n=2:a=1 -c:a
aac -y sound.mp4
Default value for concat v is 1. So you need
Michael Koch (12022-06-11):
> I always get this error message:
> Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1 matches
> no streams.
Where did you find this "[number]" syntax, and has it ever worked for
you?
Regards,
--
Nicolas George
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On 2022-06-11 03:02 pm, Michael Koch wrote:
I want to concat two audio files. What's wrong with this command line?
ffmpeg -i birds1.wav -i birds1.wav -lavfi [0][1]concat=n=2:a=1 -c:a
aac -y sound.mp4
Default value for concat v is 1. So you need to set it to 0.
concat=n=2:a=1:v=0
I want to concat two audio files. What's wrong with this command line?
ffmpeg -i birds1.wav -i birds1.wav -lavfi [0][1]concat=n=2:a=1 -c:a aac
-y sound.mp4
I always get this error message:
Stream specifier '' in filtergraph description [0][1]concat=n=2:a=1
matches no streams.
The console
