mkv file with e-ac3 audio problem

[ian4355]

The problem is that the e-ac3 audio doesn't play well with my av amp ("normal" ac3 is fine).

I have AVC Pro, which does a good job of converting the audio, but it downmixes from 5.1 (or even 7.1) to stereo, which is OK but not the BIG sound I was expecting.

Any hints or help (or hand-holding) would be much appreciated.

[Bernix]

Hi,
I cant test it but according to www, Avidemux can handle e-ac3 audio. Just open your video. In video left copy
In audio, select AC3 codec you want, set bitrate and in filters method you want remix it stereo 5.1 etc.
I hope it will works.

Bernix

[ian4355]

Thanks friend, I'll try that tonight and let you know how I got on.

[videobruger]

Use ffmpeg in a CMD shell

ffmpeg -i MKVFile.mkv -vcodec copy -acodec AC3 Converted.mkv

or as a batch job

ffmpeg -i "%1" -vcodec copy -acodec AC3 "%~n1_AC3.mkv"

Maybe place it in your SendTo folder and use it in the right-click menu from Windows File Explorer.

[Bernix]

Hi,
O.K. Avidemux has two AC-3 encoders. AFTEN and LAV. Now AFAIK FFMPEG is using (aften). And I found on web, that (lav) is using ffmpeg. Isnt it bit weird?
So if you are not satisfied with FFMPEG quality or whatever, try AC-3 (lav) It must be different. Otherwise dont know why Avidemux offers it. Altought internet claims as mentioned above.

Bernix

[pandy]

The problem is that the e-ac3 audio doesn't play well with my av amp ("normal" ac3 is fine).

Perhaps you AV amplifier do not support E-AC3? (also E-AC3 may be not outputted correctly over classical S/PDIF, HDMI should work OK).

[ian4355]

Bernix - thanks, Avidemux worked perfectly and so quick!

Also thanks to everyone who left ideas/suggestions.

Do I now have to mark this as closed?