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Recent Posts
91
FLAC / Re: Why FLAC level 5 was chosen as the default and recommended setting?
Last post by Markuza97 -
Not releated to FLAC but anyway...
MP3 is still very popular. Why is LAME encoding to 128 kbit/s CBR by default?
Why not switch to V2? Maybe even V3 or V4?
128 kbit/s CBR is archaic.

Every other encoder seems to target normal bitrates.
QAAC targets 192 VBR.
Opus targets 96 VBR.
x264 (yes, video :P) targets 23 CRF.
94
FLAC / Re: Why FLAC level 5 was chosen as the default and recommended setting?
Last post by krafty -
Quote
If I look at the old lossless format comparison on the FLAC homepage some years back I'd say 6 was a better trade-off for FLAC 1.2.1: that seems to be the point past which returns diminish quickly. ( I think the graph plots -4 through -8 from right to left) Perhaps this choice was made way earlier and it just stuck around. Maybe if you do a comparison of different presets with FLAC 1.0 you get a clear answer. Things have changed with FLAC 1.3.1 again.

That's what I thought for a minute before getting the first reply. Choice made earlier and stuck and things have changed.
96
General Audio / Re: 2021: 82.1% of music consumption is catalog music, not ‘current’ music.
Last post by knutinh -
Music streaming services have moved music consumption from once time purchases to subscription. Thus, rather than people buying the next Lady Gaga once, then listening to it however often for all future, they are now paying (essentially) per listen.

That moves incentive from releasing new music to owning the golden oldies that people will listen to again and again.

BTW, once we have all thrown away our musical collection (and CD player), I expect that whoever owns the Beatles catalog, ABBA etc will pull out of Spotify, release their own streaming service, and the price will be reflecting how eager we are to listening to the music we grew up with. With no realistic alternative.

-k
97
FLAC / Re: Why FLAC level 5 was chosen as the default and recommended setting?
Last post by binaryhermit -
I just did a few more tests, on a similar setup to what I described, when decoded to WAV the file was 138476 KB I got about 73x encode speed and an 86196 KB file at flac -0, about 32x and an 80152 KB file at flac -5 and about 8x and a 79404 KB file at flac -8.

Also, in practice I'd probably get ~3x the speed if I weren't using the powersave governor.  And if I had a bunch of files, I probably could get about 4x that since I could run one flac encoder per core.

If I were ripping a bunch of files from CD, I'd still use FLAC -8 since unless you have multiple CD drives going at once you're not ripping at ~96x total.  If I had a bunch of files to convert at once (like, files with a total length of weeks to convert to FLAC, I'd probably do more investigation as to what preset is actually the sweet spot between -5 and -8.  However, if I were converting a little bit at a time, like, say, a live concert recording at a time, I'd certainly go -8.

EDIT: Also, if speed were really that important, I probably could spin up multiple Raspberry Pis and do some sort of distributed audio encoding setup.
98
Development - (fb2k) / Re: Wishlist for new foobar functions
Last post by Rollin -
It can mean that another program produces different sound or that DTS decoding by foobar (ffmpeg) is not the same as dedicated decoding by AVR
I don't know what does you AVR produce (and you don't know it too), but it is easy to verify that ffmpeg/fb2k's DTS decoder does produce bit-perfect results when decoding DTSHDMA to PCM. And using WASAPI exclusive output, PCM will be delivered bit-perfect to AVR.
99
FLAC / Re: Why FLAC level 5 was chosen as the default and recommended setting?
Last post by ktf -
I know that for most hardware these days, it doesn't matter much whether is 0 or 8. But why 5 is recommended over 4. 
No clue.

If I look at the old lossless format comparison on the FLAC homepage some years back I'd say 6 was a better trade-off for FLAC 1.2.1: that seems to be the point past which returns diminish quickly. ( I think the graph plots -4 through -8 from right to left) Perhaps this choice was made way earlier and it just stuck around. Maybe if you do a comparison of different presets with FLAC 1.0 you get a clear answer. Things have changed with FLAC 1.3.1 again.

If you look at that page even further back, only -3, -5 and -8 are compared, not -4 and -6.

At the very least I can say I'm pretty sure it is a compression/encoding time trade-off, and has nothing to do with compatibility nor with decoding speed, which are pretty much equal for all compression levels.

it encoded to FLAC in 1m40s (Approximately 8x) on a Raspberry Pi 400 running the 64 bit version of Raspberry Pi OS
And there are even ARM64 intrinsics routines waiting to be merged into FLAC that speed up by at least a factor 2.