On Sun, 18 Mar 2007 08:38:08 +0100 Andrea Giuliano <[EMAIL PROTECTED]> wrote:
> I also would like any hint or link about the general issue, I mean "how > lavrec builds its own output file and how it makes them real AVI file > only when it closes them". AVI files are files containing data contained in the RIFF container format (which in turn is a ripoff of IFF, just with different endianness and chunk naming authority). Lavrec, or rather avilib, create a file with an empty RIFF header, which is filled in when the file is closed. Why, I do not know, but that's the way it's done. Thus, if lavrec crashes, there'll be a file without RIFF header, a lot of RIFF data and no index chunk, as the index is written last, too. http://en.wikipedia.org/wiki/RIFF gives some background, and http://en.wikipedia.org/wiki/Audio_Video_Interleave gives a little more in-depth information. http://msdn2.microsoft.com/en-us/library/ms779636.aspx (linked to fromn the latter) explains the really gory parts of RIFF, and with this information, in combination with head, cat, a good text editor and a certain amount of creativity, you should be able to transplant a header from one of the working files. With any luck, you should be able to feed this file to mencoder, using -oac copy -ovc copy, and recreating the index with -forceindex, giving you a working file. I've done it once, but I'm not sure it was worth the effort. /Sam ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
