marc999
19th September 2007, 22:21
Hi. I am trying to re-encode the audio of an existing avi file from ac3 to vbr mp3. After looking at the forums, it seems that I could use VirtualDubMod but it is not recommended as it may cause syn problems - plus I question the stability of a hacked lame acm codec. So I'm trying to use AviDemux and apparently you have to go Audio -> Build VBR Timemap. I've read you need to have libmad installed. I'm not sure what that is or how to do it but if I go Help -> Built-in Support there is a green check mark beside "MAD". When I go Audio -> Build VBR Time Map nothing happens, even after I go Audio -> Encoder -> Lame -> Configure Codec -> Bitrate mode : ABR (VBR doesn't show up). This happens whether I unpack the bitstream or not upon opening the avi file. This is with Avidemux 2.4 (r3587) on Windows XP SP2. Any suggestions?