Am 31.05.2022 um 18:43 schrieb Cecil Westerhof via ffmpeg-user:
Michael Koch <astroelectro...@t-online.de> writes:
I have a short example in chapter 2.57 of my book:
http://www.astro-electronic.de/FFmpeg_Book.pdf
Just to make sure I understand it, I should do something like:
ffmpeg -ss %S1% -t %L1% -i %I1% \
-ss %S2% -t %L2% -i %I1% \
-ss %S3% -t %L3% -i %I1% \
-lavfi "concat=n=3:v=1:a=0" \
-an %OUT%
But if I understand it well, this works on the iframes, would it not
be better (but longer) to use:
ffmpeg -i %I1% -ss %S1% -t %L1% \
-i %I1% -ss %S2% -t %L2% \
-i %I1% -ss %S3% -t %L3% \
-lavfi "concat=n=3:v=1:a=0" \
-an %OUT%
I think that won't work. If you write the options after the input file,
then they are applied to the next input file, and the options in the
third line are applied to the output file.
The concat filter does also work with audio. I just didn't need audio in
my example.
Michael
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