[MPlayer-users] Re: Problem with playing mpeg2 files smoothly

Jonathan Rogers jonner at teegra.net
Tue Aug 26 07:51:03 CEST 2003

rcooley wrote:
> Mind if I ask what you are using to record an Ogm like a VCD?  Seems 
> like a good idea, instead of wasting all that space on pesky error 
> correction...

I don't mind at all, but you'll find what you need by searching the list 
archives as well. Several others and I have discussed it quite a bit. 
Keep in mind that this is not a standard or necessarily reliable way to 
do things. I've had to tweak mplayer's -cache value to play the movies. 
The default value of 8192 causes mplayer to give up too soon and exit, 
while -nocache is very jerky. I found that about 3000-4000 is good on my 

The main thing that I'm still uncertain about is whether leaving out the 
ECC decreases the overall reliability of the movie. That is, is a movie 
burned this way more likely to become completely unplayable sooner than 
one with an ordinary Mode 1 ISO9660 filesystem?

I'm hoping that though the chance of small errors increases, the overall 
reliability of the movie may be better, since the player can notice and 
tolerate some corruption, which will manifest itself as visible decoding 
errors, rather than causing the player to exit. Indeed, I've seen this 
very thing happen when I tried to overburn too much. The last minute or 
so of the movie had many errors, which corrupted the video, but it kept 
playing. I think it would have simply frozen with that many errors on an 
ISO filesystem, since the filesystem driver tries to deliver perfection.


Jonathan Rogers

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