MP3 encoder under Linux

Hello,

I tried some MP3 encoders, but they are quite slow (about 1:10-1:16 on my P166) So I just post this message to know if someone know an MP3 encoder that record fast :)

Thanks in advance,
Alexis

Yes, I've heard of it. However why under Windaube there are so much fast MP3 encoding programs ?

It takes about 20 min for a 3 min file here on a P166, 96Mo, Linux 2.1.125

So, it's about the same.

Under Windows I found a program that is able to convert an Audio CD track which is 3 minutes long in 2 minutes! And the quality is excellent...

Cu!

Hello Alexis,

Hmm, there is a lossless huffman encoding step in Layer 3; however, to extract even the 'last percent of quality' possible, some encoders do an exhaustive huffman search to find the absolute best compression parameters. This does not influence sound quality directly, but it can improve it indirectly, by providing for better compression, thus leaving more bits for next frames - remember, the threshold for throwing away 'negligible' sound parts is constantly readapted according to the bits used up by previous frames.

The quality improvement gained by this method is probably negligible at 128kbit/s or higher bitrates. However, it can help much more esp. for the lowest bitrates, so that doing it there is usually worth the time spent on it.

If I switch off huffman search on my mp3encdemo, encoding speeds up perhaps to 6-10 times the original speed. Although I haven't conducted extensive tests, my impression was that at 128kbit/s there was no audible difference - YMMV though, as with all perceptual compression methods.

Hope, this helps,

Sincerely,
Andras Kadinger
[email protected]