With default options, the result was almost instant
- At > 500x speed
Used -compression_level 12, finished in ~ 7 seconds
- speed = 48.9x
Then I used multi_dim_quant
- After ~ 10 minutes, I checked the speed to be ~ 0.02x. So thought it would take an hour or so. 1.30 seconds worth of audio was encoded
- It's been over 2 hours now.
  - Shows 1.46 seconds of audio encoded with current speed = 0.00017x

Considering running it in a VM, so I can "pause" it whenever I need to restart my computer.

Update:
size= 123KiB time=00:00:02.82 bitrate= 356.3kbits/s speed=4.68e-05x
It stopped trying to use layman notation.
I'll need to restart soon-ish, but I'll see how far this goes and if the 2.82 seconds of audio is even listenable.

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[–] brucethemoose@lemmy.world 7 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

Heh, joke's on you; you're using the wrong library for obsessive FLAC compression anyway:

http://cue.tools/wiki/FLACCL

0.00017x sounds like a bug though. Maybe it balloons RAM usage enough to trigger swapping?

[–] ulterno@programming.dev 3 points 2 weeks ago (1 children)

Maybe it balloons RAM usage enough to trigger swapping?

Well, my RAM usage doesn't seem to have increased though (at least from this process).
And I haven't setup a swap.

http://cue.tools/wiki/FLACCL

Oh, it has a CUDA library!?
Then this FFmpeg FLAC library is really basic, considering it has no parallelism. I was assuming that the algorithm itself is not parallelisable.

[–] brucethemoose@lemmy.world 6 points 2 weeks ago* (last edited 2 weeks ago)

It's OpenCL, so it should even run on integrated graphics.

Yeah, it's great! Extremely fast and marginally smaller than ffmpeg, last I checked, though I have not messed with those newer ffmpeg options. And cuetools has some other nice utilities anyway.