[MPlayer-users] Problems with NTSC - summary

Dominik Szczerba domi at vision.ee.ethz.ch
Sat Nov 9 22:12:03 CET 2002


  Hi,

Thanks for test results. Yes, now I get also good length when I choose 
24 instead of 30 which is reported by mplayer (which is quite 
confusing...) However, I have still theese (and other mentioned before) 
problems with some particular vobs (of unknown origin), maybe it is just 
them that are broken... well I just have to get the originals somehow 
and check with streamdump.

And still I get some NTSC DVDs play/rip on one dvdrom, but not on 
another one...

But this one is finally fixed! So I dont have to worry about region 
encoding, woaw, this is really great, there are quite some nice 
ntsc-released-only dvds out there!

Thanks to all who helped
DS

>Hi Dominik !!!!!
>
>I haven't the old files, but I made some test for you with a newer. In 
>
>http://mate.dm.uba.ar/~mpavon/tmp 
>
>You can find the following files:
>
>sample.vob (20mb)
>test.sh
>23.976.log
>29.97.log
>
>The first is the vob sample for the test. I encoded it with a target size
>of 2mb. I estimated the videobitrate with the formula
>
>target_size*1024^2*8/(duration_in_sec*1000)
>
>Duration is 26.7 sec so I got 628 approx.
>
>For the test I used test.sh first with OFPS="-ofps 23.976" and output
>ofps-23.976.avi and later without it (so I believe mencoder used 29.97 as it 
>said) with output ofps-29.97.avi. 
>
>The size of the resulting files is:
>
>-rw-r--r--    1 m        users     2104052 Nov  8 23:19 ofps-23.976.avi
>-rw-r--r--    1 m        users     1663710 Nov  8 23:21 ofps-29.97.avi
>
>As you can apreciate, 23.976 reach the target size and 29.97 is noticiablely
>smaller.
>
>23.976.log and 29.97.log are a cut & paste from the Eterm after the second
>pass. You can see the the difference in the duplicate frames between 23.97 
>and 29.97, I guess this is a sign the that 29.97 fps is wrong 
>
>Regards,
>
>Martín
>  
>




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