Hi,

I recently (1 hour before ) bought an iriver IFP-995 and had to realize that my music encoded at Quality 6,5 is too "good" for the machine. There are tracks "UNSUPPORTED OGG FORMAT" and there are also playback errors) The device supports bitrates between 96Kb and 226Kb only, but I thought -q6,5 would be OK.

Thus, I want to re-(or trans-)code all my music (mainly vorbis files) to -q 3 or 4. All the Tags should be written to the new files and only the vorbis files should be reencoded. "Bitrate peeling" would be the key, but so far it is not implemented (is that right?) But will transcoding vorbis->vorbis cause soo much quality loss?

I'm on Linux here, so does anybody have a solution on the command line or can help how to write a script?
(Foobar2000 also resides on my windows partition, but I dont want to boot win because I cannot connect to the Internet from that OS, so reencode via foobar would not be perfect solution, but it would be one possible.)

Hoping anybody can help me,
Martin

It would be much better if you encoded the originals at -q 3 and 4, rather than transcode, since you lose even more quality.

I know, but I cannot re-rip the CDs I gave away to my sister or friends. The CDs I still have here will be encoded a second time at -q 5 and -m 96 that the birate cannot drop below 96Kb. -q 5 seems transparent to me.

I noticed that the problematic tracks are encoded with GTb3 oggenc -q 6. All the tracks encoded with the official oggenc 1.1 -q 6 are played without any issues.

For the other tracks transcoding is just done for the portable, so the quality will be good enough for listening to music in train etc. So I look for a possibilty to determine which tracks were encoded with Garf's oggenc (via ogginfo?), and transcode them to a seperate directory. By script would be best...

For the archive I maybe should think about FLAC, but there is also the problem that I would to create a second archive for the portable. And my hard disk has not unlimited space

I know, but I cannot re-rip the CDs I gave away to my sister or friends

Then you have no legally right to have these .ogg's, unless otherwise stated on the cd's

It very much depends on HIS country's laws (not your's or mine) and beside that I think this is entirly HIS business and highly OT.

Sergio

FWIW, the guy doing most of the alternate firmware for Neuros did some testing and found that aotuv gave the most playable coding at high Q values, even when it had a higher bit rate than a different coder. I don't know if this carries over to Iriver.

I haven't used it or anything like that but Iriver does have this program:
Ogg Bit Converter V1.1 that will change the bitrate for you. No promises made as to what it does to the quality.

Problem solved...