Re: [Audacity-devel] Export Options
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From: LRN <lr...@gm...> - 2008-07-13 03:55:37
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Gale Andrews wrote: > | From LRN<lr...@gm...> > | Sat, 12 Jul 2008 18:02:26 +0400 > | Subject: [Audacity-devel] Export Options > >> Gale Andrews wrote: >> >>> 8 kbps LC> iTunes: 18 kbps LC >>> 16 kbps Main> iTunes: 19 kbps no profile >>> 32 kbps SSR> null file 0 bytes >>> 32 kbps LTP> iTunes: 22 kbps no profile >>> >>> Should 32 kbps per channel in Audacity end up as 64 kbps given I had >>> a stereo file? >>> >>> DBPowerAmp sees the correct profile for the three files that exported, >>> but has 0 kbps bit rate. Foobar 2000 displays all the exported profiles >>> correctly, and displays the same bit rates as iTunes (i.e. not what >>> Audacity exported). >>> >>> >> Actually, it said "per channel", but in reality it was "per whole file", >> because FFmpeg is making the bitrate/channels division internally. >> Part of the problem is that max supported bitrate is per channel only, >> and it depends on samplerate. >> >> I know how to handle that, but ShuttleGui is resisting my attempts to >> change the data. >> > > I don't know how finnicky iTunes is, but it's more important that we > get the profile appearing correctly in iTunes than in other programs, > because of the number of people using it. > >>> SSR profile also produces null files when exporting AAC. >>> >>> >> After some digging in libfaac source code i found out that SSR is not >> supported. D'oh. >> > > Can we remove it then if it won't work? > Just committed the fix.for both. It probably won't fix the iTunes compatibility, but bitrate setting works more or less correctly now and is, indeed, bit-rate per channel (damn...i forgot to change the label to "per channel" again...). Try testing it on every available bitrate, and maybe with different sample rates. I think LC is 44100-only. |