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1
MP3 / Re: Low bitrate MP3 (+ unsupported bitrates)
Last post by Kraeved -
RTFM #1

Quote
MPEG-1 Audio Layer III: 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 kbps
MPEG-2 Audio Layer III: 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbps
MPEG-2.5 Audio Layer III: 8, 16, 24, 32, 40, 48, 56 kbps

These are the bitrates for MP3 CBR mode. There is no 12 kbps among them. Thus, to get 12 kbps file, which can be played back on a wide range of audio equipment, you have no choice but to use VBR mode (or ABR as a variation of it) so that some of the data is compressed at a lower bitrate and some of the data is compressed as a higher bitrate, producing the output that is as close as possible to the bitrate you specified.

RTFM #2

Quote
If not specified, LAME may sometimes resample automatically when faced with extreme compression conditions (like encoding a 44.1 kHz input file at 32 kbps).  To disable this automatic resampling, you have to use --resample to set the output samplerate equal to the input samplerate.  In that case, LAME will not perform any extra computations.

gxlame.exe --abr 12 -h --lowpass 3500 --resample 11025 in.wav out.mp3

Code: [Select]
GXLame-t5
CPU features: MMX (ASM used), SSE (ASM used), SSE2
Using polyphase lowpass filter, transition band:  3423 Hz -  3556 Hz
Encoding history.wav to history.mp3
Encoding as 11.025 kHz single-ch MPEG-2.5 Layer III (14.7x) average 12 kbps qval=0
    Frame          |  CPU time/estim | REAL time/estim | play/CPU |    ETA
   324/324   (100%)|    0:00/    0:00|    0:00/    0:00|   60.240x|    0:00
  8 [170] *********************************************************************
 16 [137] ********************************************************
 24 [ 15] *******
 32 [  2] *
 40 [  0]
 48 [  0]
 56 [  0]
 64 [  0]
-------------------------------------------------------------------------------
   kbps       mono %     long switch short %
   12.3      100.0        90.1   5.6   4.3
Writing LAME Tag...done
ReplayGain: -0.2dB
2
MP3 / Re: Low bitrate MP3 (+ unsupported bitrates)
Last post by Klymins -
@Kraeved Much thanks. So, is manually setting the cutoff frequency possible with this? I wrote "--lowpass 3500" but this also changed the sampling rate to 8000Hz. It must be 11025Hz otherwise i can't import this file to Flash. Also, can this tool make 12kbps CBR (18kbps and 20kbps files were CBR)?
5
MP3 - General / Re: Resurrecting/Preserving the Helix MP3 encoder
Last post by KevinB52379 -
Hello!  I did try the Clang version because quite honestly I was curious and was hopeful it would fix it.  Alas it does not.  I get about 250x to 300x realtime encoding from FLAC to mp3.  The files are on an external ahrd drive and encoding to my internal NVME SSD.  I get similar results with everyone's build of Helix, and my system slows down (even more so than normal).  I even tried disabling AVG thinking that was somehow interfering, but no dice. 

When I use Case's version of Helix Win32 build, I get about 1000x to 1300x realtime encoding those same files.

I've tried everyone's 64 bit builds and 32 bit builds with the same results....

Except for Case.  Does he put some magic in his compile?? LOL

You are correct, I have a Zen3 8 core processor that can handle 16 threads (AMD Ryzen 7 5700g @ 3.8ghz base...it has integrated graphics and the system has 32GB of DDR4 RAM and 1tb nvme gen3 SSD (Samsung 980 1tb).

I'm willing to try any other builds if anyone wants me to, but so far, Case's version is the only one that seems to work properly with fast encoding speeds and doesn't cause the system to basically hang...with his version the system does slow down, but it still responds.  And encoding speed remains fast and consistent with full cup utilization.  With everyone else's builds the cpu utilization never reaches 100% even though I have foobar encoding settings set to automatic for thread count and default priority.

Oh, I have the latest chipset drivers and graphics drivers from AMD.
Sorry to be so wordy but just trying to provide info.
6
Support - (fb2k) / Re: Foobar 2.1.4 Crash
Last post by Case -
Looks like it can't open sqlite databases. The sqlite error 14 means SQLITE_CANTOPEN and the win32 error 2 means ERROR_FILE_NOT_FOUND. And you get the exact same problem with a clean portable install?
8
Support - (fb2k) / Foobar 2.1.4 Crash
Last post by jakedean22 -
Hi All,

i was using 2.1.3 after upgrading my portable installation from 1.6 i thought it was time to try the newest version. My music is stored on a network drive and whenever i was changing tags or moving files it would randomly crash. i could never figure out what specifically. i ignored it, updated to 2.1.4 and within 5 mins crashes again. i have had about 4 tonight. i want to stay on 2k but i can only stop the crashes when using 1.6.

i updated over the top of my existing installation but also tried a completely fresh one, that didnt work either. i searched other crashes and saw turning off hardware acceleration was an option, turns out mines already off. please see attached crash, if someone can interpret the violation i would be very appreciative. i also send the logs within Foobar.
9
MP3 / Re: Low bitrate MP3 (+ unsupported bitrates)
Last post by Kraeved -
Quote from: Klymins on
Now i tried GXLame and Helix but they did not give ~12kbps.

gxlame.exe --abr 12 -h in.wav out.mp3

Code: [Select]
GXLame-t5
CPU features: MMX (ASM used), SSE (ASM used), SSE2
Using polyphase lowpass filter, transition band:  5379 Hz -  5513 Hz
Encoding history.wav to history.mp3
Encoding as 11.025 kHz single-ch MPEG-2.5 Layer III (14.7x) average 12 kbps qval=0
    Frame          |  CPU time/estim | REAL time/estim | play/CPU |    ETA
   324/324   (100%)|    0:00/    0:00|    0:00/    0:00|   56.994x|    0:00
  8 [169] *********************************************************************
 16 [138] *********************************************************
 24 [ 13] ******
 32 [  4] **
 40 [  0]
 48 [  0]
 56 [  0]
 64 [  0]
-------------------------------------------------------------------------------
   kbps       mono %     long switch short %
   12.3      100.0        90.1   5.6   4.3
Writing LAME Tag...done
ReplayGain: -0.2dB