Am 07.05.2020 um 02:46 schrieb Ulf Zibis:
Am 06.05.20 um 20:48 schrieb James Darnley:
On 06/05/2020, Ulf Zibis <[email protected]> wrote:
-af
volume='not(between(t,46:50,48:50))',volume='not(between(t,1:30:00,1:31:00))',atempo=1/1.1/1.3,aresample=48000/1.1,asetrate=48000
[Parsed_volume_0 @ 0x55b1b575cd40] [Eval @ 0x7ffed56fa4a0] Missing
')' or
too many args in 'between(t'
[Parsed_volume_0 @ 0x55b1b575cd40] Error when evaluating the volume
expression 'not(between(t'
[AVFilterGraph @ 0x55b1b575c5c0] Error initializing filter 'volume'
with
args 'not(between(t'
You need to escape those commas. Commas separate different filters.
Probably the colons too which separate different arguments for a
single filter.
Thanks for the hint. I already tested escaping the commas with '\' but
with hours:minutes:seconds. This didn't work.
Now I tried with pure seconds, an this worked. Here is my command:
$ ffmpeg -ss 03:00 -t 01:30:50 -i in.mp3 -f lavfi -i
life=s=320x240:mold=10:r=30:ratio=0.1:death_color=#C83232:life_color=#00ff00
-af
volume='not(between(t\,2791\,2911))':eval=frame,volume='not(between(t\,5397\,5457))':eval=frame,atempo=1/1.1/1.3,aresample=48000/1.1,asetrate=48000
-vf format=yuv420p -crf 39 -shortest out_1.3x.mp4
I tried several versions to escape the collons, but found no solution.
I think, that there must be a solution similar to the examples here:
https://ffmpeg.org/ffmpeg-filters.html#Examples-5
Does one have a clue, how it could work?
I have never seen an example of hh:mm:ss inside an expression, and I
don't think that works. The expression evaluator works only with integer
or floating point numbers, but not with times.
Michael
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