On Mon, Jan 04, 2010 at 06:53:30PM +0100, Reimar D?ffinger wrote: > > I hope this has something to do with libmpeg2 or an option > > (e.g. -lavdopts) which default value was changed during the releases. > > Probably -key-fifo-size 2 gives the old behaviour (if you knew where to > look it would would have been in the manual :-) ) > However now that I try it there seems to be another, rather strange, issue. > -demuxer lavf seems to avoid it for me. Actually it seems your guess was even better, for MPEG files -vc mpeg12 works far better (compared to not at all without) for seeking with the default demuxer.