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AAC Re-encode Question

Posted: Sun Jan 20, 2013 5:48 pm
by Madoka
Sorry for the newb question.

I transcode a lot of .mp4s with AAC audio due to subtitles. I was wondering if re-encoding a lossy AAC track into AC-3 results in more loss of information (more lossy, I guess)?

Thanks.

Re: AAC Re-encode Question

Posted: Fri Jan 25, 2013 2:15 pm
by SubJunk
If the bitrate of the AC-3 is 640kbps there shouldn't be any real loss. Technically there is loss but you can't hear it.

Re: AAC Re-encode Question

Posted: Fri Jan 25, 2013 3:17 pm
by Madoka
Thanks, SubJunk.

And thanks for UMS! It's now a rare file that doesn't play for me. I've banished the transcode folder.

Re: AAC Re-encode Question

Posted: Fri Jan 25, 2013 3:22 pm
by SubJunk
That's excellent news, thanks! Got another release I'm building now which will improve file support even more :)

Re: AAC Re-encode Question

Posted: Fri Jan 25, 2013 4:13 pm
by Madoka
I'm looking forward to 2.3.0 and trying subtitles with FFmpeg.

Re: AAC Re-encode Question

Posted: Fri Feb 01, 2013 11:38 am
by SubJunk
We're aiming for putting FFmpeg external subtitle support in 2.4.0 :)

Re: AAC Re-encode Question

Posted: Mon Feb 04, 2013 6:52 am
by Madoka
I see that the FFmpeg/subtitles commit is back. Can't wait to try this out!