[MPlayer-users] skipped frames during encoding

[belcampo]

Greg Bryant wrote:
> Probably a total noob question, but here goes.  In my playing with h284, I'm
> taking an existing 4m .mov video, and encoding it to h264.  Here's the (very
> basic) command line:
> mencoder vid1.mov -o vid1.avi -ovc lavc -lavcopts vcodec=libx264 -oac copy
> 
> During encoding, it ends up skipping a frame about every 3/4 second, so that
> the resulting video is very jerky.
> 
> Skipping frame!
> Pos:   1.6s     41f ( 0%) 13.16fps Trem:   8min   8mb  A-V:0.083 [73:128]
> Skipping frame!
> Pos:   2.4s     61f ( 0%) 12.37fps Trem:  13min  26mb  A-V:0.083 [380:128]
> Skipping frame!
> Pos:   3.1s     81f ( 0%) 12.88fps Trem:  17min  29mb  A-V:0.083 [308:128]
> Skipping frame!
> Pos:   3.9s    101f ( 0%)  8.89fps Trem:  21min  79mb  A-V:0.083 [1329:128]
> etc.
As you can see it happens every 20frames.
Look with mediainfo -f vid1.mov what kind of mov file it is variable fps 
  ? You then also see what elementary video and audio streams it has, 
with which bitrates.
Then you can decide what you want as h264 paramters. BTW avi is not the 
intended container for h264 video. mov, mp4, or mpegts are the ones you 
should consider.
> 
> What options should I be looking at/learning more about to solve this?
> 
> Thanks
> Greg
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