Remap AC3 channels losslessly?
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Remap AC3 channels losslessly?
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Posts: 843
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2021-10-23, 07:52 PM
Just checking if anyone knows of a way to remap the channels of an AC3 file without encoding? Is it possible to do this losslessly? Or do I need to convert to wav, remap and then encode as DTS HD or 640 kbps AC3 etc? Thanks
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2021-10-23, 08:48 PM
You could try this:
https://ffmpeg.org/ffmpeg-filters.html#channelmap If you use it with the '-c copy' flag then it shouldn't re-encode the audio. I'm not sure if this will affect the dialnorm value or not though. Thanks given by: alleycat
Posts: 843
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Given 1140 thank(s) in 379 post(s) Country:
(2021-10-23, 08:48 PM)stwd4nder2 Wrote: You could try this: Thanks. Well it's worked, but unfortunately lossless didn’t work. "Filtering and streamcopy cannot be used together" |
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