Then please don't use it, use an audiofilter instead.
(The one that fits your needs.)
I am not convinced that the current mapping of -ac
to aresample is immutable.
(Even if it is, you can still use the filter and
you are on the safe side.)
Carl Eugen
Hello Carl, so what can I do when my target has more audio channel than
the source?
For example if I have a file with 2ch stereo and my target is 4ch (with
ch3 and ch4 silent) how can i do that? I need to generate silence for
the last 2 channels because I dont want to copy ch1ch2 to ch3ch4.
If I have a target with less channels than the source I use the
-map_channel option:
Like: ffmpeg -i "24bitaudio8CH.wav" -acodec pcm_s16le -map_channel 0.1.0
-map_channel 0.1.1 -ac 2 "16bitaudio2CH_ch1ch2.wav"
So is this possible?:
ffmpeg -i "2ch_audio_source.wav" -i "mono-silence" -acodec pcm_s16le
-map_channel 0.1.0 -map_channel 0.1.1 -map_channel 1.0.0 -map_channel
1.0.0 "4ch_audio_target.wav"
Is there a filter which can generate silence as input source?
Best Regards
Christoph
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