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Help with audio mixdown

Posted: Sat Aug 29, 2015 9:13 am
by Richyy
Hi!

What is the best way to mix down an mxf with 4 mono channels to stereo if the first two should be on both channels the 3. Left and the 4. Right?

I also had a problem with custom ffmpeg that I could not use the vertical slash character because it was interpreted as a tab or line brake.

Thanks

Re: Help with audio mixdown

Posted: Sun Aug 30, 2015 12:53 pm
by admin
Hi Richyy and thank you for using FFAStrans!

I'm sorry to say you've encountered a bug I was not aware of :oops:. It's actually a design flaw so it's my bad! Currently it's impossible to use the pipe "|" character in the "Custom FFmpeg"-encoder. This will off course be fixed in the next release of FFAStrans.

For now you need to insert the "A/V Decoder"-decoder and then insert the following AviSynth-script into a "Custom AviSynth script"-filter:

ch_1 = MixAudio(audio_1, audio_3)
ch_2 = MixAudio(audio_2, audio_4)
audio = MergeChannels(ch_1, ch_2)
m_clip = AudioDub(m_clip,audio)
Return m_clip


Thank you for bringing this bug to my attention! :-)

-steipal