[MEncoder-users] Converting m2ts from JVC GZ HD 10 to avi with mencoder

tarnait tarnai_t at yahoo.de
Wed May 13 17:15:08 CEST 2009


Hi, 

I read all posts which could be related to this topic not only here,
but on the mencoder mailing list and other sources, still I was not
able to find a proper solution. My JVC camcorder produces m2ts files
(which are x264 encoded). Ironically I didn't want to be an expert in
this topic, but I read through all the material about encoding just to
convert my files into a well playable format. Now I have produced the
following script: 


Code: 


#!/bin/bash 

for i in `ls -al *.mts | awk '{ print $9 }'` 
do 

mencoder $i -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=1:v4mv:trell:turbo \ 
-fps 60000/1001 -vf filmdint,yadif=3,scale=1440:810,softskip -oac mp3lame -lameopts vbr=5 -o /dev/null 

mencoder $i -ovc lavc -lavcopts threads=2:mbd=2:vcodec=mpeg4:vbitrate=12000:vpass=2:v4mv:trell:turbo \ 
-fps 60000/1001 -vf filmdint,yadif=3,scale=1440:810,softskip -oac mp3lame -lameopts vbr=5 -o $i.avi 

rm divx2pass.log 

done 

 

Still I got a lot of duplicate frame and/or Skipped frame messages
which would not bother me, but the audio is out of sync, or the video
is playing too fast (it drops about every 2,3,5,20,25) frame depending
on the framerate. I tried fps={60,25,30, 60000/1001, 30000/1001,
24000/1001}, ofps={60,25,30, 60000/1001, 30000/1001, 24000/1001} every
possible combination. And the duplicated/skipped frames where changing
depending on the combo, so I assume it's the framerate. The closest
problem I could found was here 

http://lists.mplayerhq.hu/pipermail/mencoder-users/2008-December/009634.html 


but the solution apparently didn't work for me. Does anyone have an idea what I could try? 
Oh yes, I did try to convert it with the software which they gave
me to the camcorder - PowerDirector 6.50.310b - of course it did work,
and the info about the file: 

Type: MPEG-4 AVC 
Bitrate: 12.09 Mbps 
Resolution: 1440x1080 
Framerate: 25.00 
SeitenverhältnisTyp: MPEG-4 AVC 
Originaldauer: 00:01:44:04 
Bitrate: 12.09 Mbps 
Auflösung: 1440x1080 
Bildrate: 25.00 Bilder pro Sekunde 
Ratio: 16:9 

the only problem is it runs under Windows  

Thanks for the answers, Kind Regards, 
trinux


      


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