On 09.08.06 16:41, Marc Shapiro wrote: > I have some .mp3 files that I would like to resample to a lower bitrate > to take up less space.
That's true, I did it already and got the expected result. > from what I have read, I should be able to do > this with lame with a cmdline of: > > lame -abr56 infile.mp3 outfile.mp3 I think it should be "--abr 56", this way you resample to mono, instructing lame it's raw PCM file. > which would resample the output to an average bit rate of 56kbps, or: > > lame -v -b56 infile.mp3 outfile.mp3 encoding to variable bitrate, old slow algorithm, minimal bitrate for frames 56Kib (waste) > I tried using the second option, at 56, 64, and 128kbps. None of these > made much difference in the file size, however. I then tried : > > lame -V6 infile.mp3 outfile.mp3 > > which cut the file size by about 20%. I think you should read lame's manpage more carefully. > When I tried using -abr the file size shrank by about 60%, but, I used > values of -abr56, -abr64, and -abr128. All three ouput files had the > same size and, according to mp3info, all were encoded at 64kbps. > > What did I do wrong? > > What is the best way to resample MP#s so that reasonable quality is > retained, while file size is noticeably reduced.? don't resample at all, unless you have very high bitrates (e.g. 320Kib/s) or slow CPU (for my Nokia 6230 I resample using "--vbr-new -q0 -V7 -B 112 -p") 56Kib/s is very low quality, I consider 64 Kib/s low for normal hearing. -- Matus UHLAR - fantomas, [EMAIL PROTECTED] ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. LSD will make your ECS screen display 16.7 million colors -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
