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 added v=0. Isn't this the normal syntax to specify
the two inputs of the concat filter? In this case [0][1] could be
omitted because there are only these two inputs. [0:0][1:0] does also work.
Michael
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