what do these messages mean?

Pos: 0.1s 2f ( 0%) 0fps Trem: 0min 0mb A-V:0.000 [0:0][mpeg2video @ 0x9b50a0]rc buffer underflow
Pos: 0.2s 5f ( 0%) 0fps Trem: 0min 0mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.4s 10f ( 0%) 0fps Trem: 0min 0mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.5s 15f ( 0%) 0fps Trem: 5min 47mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.7s 20f ( 0%) 0fps Trem: 5min 50mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.9s 25f ( 0%) 0fps Trem: 5min 54mb A-V:0.000 [0:0]
Skipping frame!


i have these message for a wide range of sources and the end mpv is to short for the audio to match! what gives>?

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This messages mean that mencoder is keeping sync by dropping frames. This is needed because generally there are a few frames in the movie that are not progressive. If this frames are not dropped, the movie would get out of sync.

I just encoded the same video using cce and the lenght was pefrect.mencoder output was nearly 6 miutes to short.with cce i used dialhots v4 and for mencoder i used the avi filter the target was half d1 @2000kps source is 23 and destination is 25.any ideas?

__________________
put your liteon dvdr in the bin and buy an NEC 2500A

DId I understand it right: in mencoder you put 25 fps as input and the movie was 23.976 originally fps?

i thought that was the output no input. so i guess we use the assume 25fps in avisnyth>makeavis>then in mencoder and set the in input fps in there?sorry in a noob

__________________
put your liteon dvdr in the bin and buy an NEC 2500A

Yes, if you use assumefps (25) in your script you must select input fps as 25 in mencoder.