abcde: Ogg sounds bad, mp3's won't tag right.

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Negated Void · Post by **Negated Void** » Fri Sep 19, 2003 2:10 am

Hello!
trying out abcde, i love it.

Two issues, one - Ogg (it's actually oggenc's issue) sounds bad. At max quality it's diffrent sounding than the wav, unlike mp3 at regular quality where my non-audiophile ear's can't tell!
two - id3v2 is called w/o the arguments being in quotes (i think)
like.. -A Conspiracy of one
instead of -A "Conspiricy of one"

any ideas?
-Matt

Post by **pjp** » Fri Sep 19, 2003 2:17 am

Sorry I can't be of any help, but something is definately wrong. I have ~75GB of oggs with no problems.

I'm not saying they are better than MP3's (though some argue they are). I've not done a listening test, but I haven't noticed anything. I've only played them over "decent" computer speakers. Some Logitech model.

Negated Void · Post by **Negated Void** » Fri Sep 19, 2003 2:20 am

I've jost got basic speakers myself (2 + a small sub, generic), i can't tell the mp3 from the wav file by ear, the ogg file i can... sounds slightly diffrent, thats all.

It's strange..

wdreinhart · Post by **wdreinhart** » Fri Sep 19, 2003 3:35 am

I have this problem too. Oggs encoded with the default settings in either abcde or sound-juicer are encoded at 200+ kbps (IIRC that's *way* above optimum for vorbis) and sound terrible. I have tried re-emerging libogg, libvorbis, vorbistools, etc. with no change.

Tuna · Post by **Tuna** » Fri Sep 19, 2003 8:27 am

i can not really comment on this.. but i faintly remember there were issues with vorbis when compiled/used with sse or sse2 instructions. do you guys by any chance use any of these special instructions?

b-llwyd · Post by **b-llwyd** » Fri Sep 19, 2003 9:03 am

try encoding a wav manually:
oggenc -q5 sound.wav
and see if it makes any diff.

Negated Void · Post by **Negated Void** » Fri Sep 19, 2003 10:51 am

Yeah, manually using ogg-enc still results in the same quality file. I've got a AMD Athlong-XP, which i *think* has sse.. i'll check later, and i'll try recompiling the ogg stuff w/o it.

-Matt

BradN · Post by **BradN** » Fri Sep 19, 2003 1:00 pm

What cflags did you use when you compiled it?

libvorbis and vorbis-tools are the ebuilds you'd be concerned with - ogg is just a container for vorbis. Any quality problems would be part of the vorbis stuff most likely. Try compiling them with just -O3 -pipe and see if that helps. I don't see use flags for the most recent stable versions on my laptop, but there are sse and 3dnow flags for libvorbis if you added ~x86 to your accept_keywords.

Negated Void · Post by **Negated Void** » Sat Sep 20, 2003 12:15 am

Score!!! Victory for vorbis

I remerged libvorbis w/ no cflags but -0, pipe, fomit fram pointer, and stripped sse from the ebuild just in case..

now it's awesome!!

Thanks!
-Matt

wdreinhart · Post by **wdreinhart** » Sat Sep 20, 2003 5:01 am

Same here. I removed -msse from my cflags and re-emerge libvorbis with USE=-sse, now it produces .oggs that sound as good as the source CD. (to my ears) Has anyone reported this in buzilla?

regeya · Post by **regeya** » Sat Nov 15, 2003 9:26 pm

I'm glad someone clued me into this--I'm about to get an SSE-capable processor, and all the Vorbis files I've encoded on my machine so far are brilliant. Of course, I've only tried them on mid-range "multimedia" speakers, but they're encoded with an ABR of 128kbps!

They almost sound CD-quality to me. Maybe my growing up with LPs and cassettes made me less picky than people 10 years younger than me.

Lucero del Alba · Post by **Lucero del Alba** » Mon Nov 24, 2003 9:56 am

wdreinhart wrote:Has anyone reported this in buzilla?

yeap

Bug 34244.

gkmac · Post by **gkmac** » Mon Nov 24, 2003 9:38 pm

wdreinhart wrote:I removed -msse from my cflags and re-emerge libvorbis with USE=-sse, now it produces .oggs that sound as good as the source CD.

Just had a look at the libvorbis-1.0-r4 ebuild, and it seems that the sse use flag causes something called the "simd" patch to be applied to libvorbis. I don't know what this is or where it came from, but this patch is causing libvorbis to produce poor quality ogg files.