winzip? 7-zip?
mp3 audio file is already lossy-compressed, unless u edit out the silent starting/ending part, or remove the ID3 tags.
by done all the things i mentioned above, ur mp3 file could only get 5 to 10% smaller.

or simply re-encode to lower bitrate, but at the cost of lower audio quality.

yeah not much difference coz ur ears dont have enough experience to identify audio artifacts created by mp3 encoders.

the mp3 file size is depend on bitrates, sample rate, bit depth, and duration.
u can select standard quality settings(128kbps) to get smaller file size yet acceptable audio quality.

simply re-encode ur mp3 with any software here:
http://en.wikipedia.org/wiki/LAME#Microsoft_Windows

cbr = constant bitrate explaination on wiki
vbr = variable bitrate

CBR is usefull for streaming only. for local PC playback should use VBR, btw i think 128kbps VBR quite... useless, but depend on settings, because some part of ur music might get encoded to lower quality than CBR 128kbps.
160 to 192kbps is recommended.

320 CBR is overkill, its 320kbps all the way no matter how complex the music are, eg silent part also get encoded to 320kbps = LOL.

-V 2 is recommeded now, on newer version of lame,
experienced user wont use 320 CBR in any way except for testing.
id rather use lossless format.

ever hear about audacity? its FREE.
no need to burn ur pocket for just modify the sound tempo lol

You want convert to TTA, or convert TTA to other format?
get fb2k and the plugins on here,
http://true-audio.com/

Add signature to video require to re-encode the videos... just like hardsubbing a video.
im not sure how youtube watermark work, the youtube logo might just display on top of the video instead got hardcoded into video,
since youtube video quality too sux, the logo might not display correctly lol.

Re-encode = reconvert.
unless your video source is clean and high quality, or its VP6 FLV, is not recommend to re convert FLV since most of the FLV you find on the net use H263(not typo) which is very very outdated and the quality is very suxx.
You can Virtualdub, it can "Hardsubbing" a logo by using internal filter or trough ffdshow.

Recommended step = High quality video -> Add logo to video by using Virtualdub -> Encode to Divx/Xvid (recommended by youtube) -> upload to youtube.
http://help.youtube.com/support/youtube/bi...450&topic=10526

This post has been edited by 1024kbps: Oct 14 2008, 07:17 PM

http://mpesch3.de1.cc/ mp3directcut, cut trim blabla mp3 losslessly, only mp3
http://audacity.sourceforge.net/ audacity, generic audio format recoder/editor.
First page hasn't been update for 2 years /faecpalm

when audio is converted to MP3, or tru any other lossy-only audio encoder,
the "extra" audio information will be discarded during encoding process, its unrecoverable and it will gone forever.
unless you have the original uncompressed audio file.

you can understand why MP3 128kbps have so high of compresstion ratio 1/10, compare to uncompressed wav file.
If you re-encode a 128kbps mp3 audio to 256kbps, you only make it worse because mp3 encode will discard more audio information again,
only make the audio quality worst and end up with bigger filesize

So its impossible.

No, is it impossible, if we got a software can convert crappy 3GP video to HD video, you can forget Sony's Bluray already.

When a video converted to 3GP video, the encoder will discard most of the video information plus resize the video to fit the small screen.(3GP max video bitrate is around 384kbps and 320x240 or similar.)

You simply cant make something out of nothing because that's alot of detail missing already.
if you try to convert the 3GP video again, you are just worsening the video quality.

If you are adventurous enough, try Winff, or FFmpeg, for command line expert only: sweat:
Or try this layman way, download MKVtoolnix, mux it to MKV, tick audio only so the result file only contain audio, open the MKV audio file(its actually called MKA) with foobar2000. then convert it to MP3
just make sure you have the latest foobar player and the LAME audio encoder installed.

---

Added on September 23, 2011, 12:59 amDepending on the video container format and compression format, for versatile purpose, Mencoder and FFmpeg will do the job nicely but they are tough to use.
for AVI you can try avimuxgui, MKVToolnix for MKV, while mp4... not sure about it, MP4box might be able to do the job but you might have to use YAMB to control this command line app.


This post has been edited by 1024kbps: Sep 23 2011, 12:59 AM

Avi? Virtualdub will do the job!
Shouldnt be too hard to use tho.