On Sun, Mar 14, 2010 at 03:08:19PM +0300, Ilya Basin wrote: > Hi. I needed a larger cache because I have some videos stored on > another samba server and it's laggy. > I set options: cache=20000, cache-min=10 , and that helped to play > those videos smoothly, > > But that caused all 1280x720 mp4 files stored > on my local drive to lag and A/V desync with mplayer message: > **** Your system is too SLOW to play this! **** > > I tried cache values from 1000 to 80000, and they lag in any case. But > without the option "cache" these videos play well. Try with different -cache-seek-min values and -demuxer mov. Possible causes in addition of suboptimal behaviour of the mov demuxer are bad/insufficient interleaving in the files. > In short, even with -nocache they play faster than with any cache. Unoptimized? Broken? The cache optimizes only linear reads. The mov/mp4 design easily leads to cases where the seek performance is dominant, not the linear read.
