Audio ec-3 to AC3 or AAC

[Karol]

Hello,

I have multiple ec-3 audio files only and I'm looking for fastest and small way to convert them either to ac3 or ac3 without reencoding them (is it possible?) or using too much cpu? on Linux.

is there anything less heavy and fastest than ffmpeg?
can it be done with any tools of bento4 ?

I'm more interested in Fastest way and less Cpu usage than Audio quality.

Regards

[ProWo]

I have multiple ec-3 audio files only and I'm looking for fastest and small way to convert them either to ac3 or ac3 without reencoding them

No, you have to re-encode it.

ffmpeg -i input.eac3 -c ac3 -b:a 320k output.ac3

[Karol]

I have multiple ec-3 audio files only and I'm looking for fastest and small way to convert them either to ac3 or ac3 without reencoding them

No, you have to re-encode it.

ffmpeg -i input.eac3 -c ac3 -b:a 320k output.ac3

I'm already using ffmpeg for that, i'm looking for alternative

Regards

[johnnyquid]

eac3to seems to be able to extra the core AC3 5.1 from EAC3 without reencoding. From its changelog:

v3.41

* You can now extract the AC3 core from EAC3 with sensible syntax and no re-encoding:
eac3to_mod in.eac3 out.ac3 -core

If -core is omitted, re-encoding will occur.