On date Wednesday 2007-11-21 19:59:10 -0800, David Fox wrote: > Guys, > > I do quite a bit of video encoding / audio encoding in debian lenny, > and oftentimes I use tovid (tovid.sourceforge.net) to do the encoding, > usually with good results. > > But recently I have had a problem with ffmpeg when I attempt to encode > what looks like a 5.1 channel aac file that's part of an mp4 video, it > tells me that it can't do the encode, that encoding more than 2 > channels is not supported. The upshot is that I may have to find > another tool to extract the audio portion of the mp4 file, and then > downmix it to two channels, then resample to ac3 dvd standard audio > format.
You told it, ffmpeg can't still downmix (but that is a requested feature, many related patches laying aroung ffmpeg-devel), so you have to do it manually (for example using faad --downmix). Check also the Gmane archive of ffmpeg-user where I recently discussed that issue. [...] HTH, regards. -- Stefano Sabatini Linux user number 337176 (see http://counter.li.org) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
