[MPlayer-users] [Bug] Choppy video in mplayer svn

[Mrc Gran]

Hi, Jorge, thanks for your reply.

I believe that the -cache 4096 option works for that specific video because
it is very small, just a few seconds, so all of it is cached on disk before
it is played by mplayer.

Could you please try this instead?
<http://playervideo.globo.com/webmedia/GMCMidiaASX?midiaId=533768%7Cbanda=N%7Cext.asx>mplayer
-playlist "
http://playervideo.globo.com/webmedia/GMCMidiaASX?midiaId=650349|banda=N|ext.asx"
-cache 4096

It lasts around 10min, and the cache option doesn't work for me in this
case. What I see is that the few initial seconds work fine, then it looks
like the cache on disk 'exhausts' and the chopping/stuttering starts. Using
it without the cache option makes the choppiness present from the very
beginning.

This choppiness is *not* present, for instance, in totem (2.18.1)+xinelib(
1.1.4). Totem-xine uses a very small buffer (~1mb), but it plays fine all
the 10min of video, without problem.  (just like windows media player does).

totem "
http://playervideo.globo.com/webmedia/GMCMidiaASX?midiaId=650349|banda=N|ext.asx
"

Do you observe the same behaviour as I do?

--
It seems that the *cache* option in mplayer, somehow, is fundamentally
different from the *buffer*  of totem and wmp: for some reason, totem and
wmp replenish the content of the buffer with recently received frames,
letting the buffer as full as possible. mplayer, instead, uses the cache to
cache only the *inital* part of the video, and after that part has been
played, the cache is pretty useless. Am I wrong on how this caching works?
Is it possible to use a 'buffered stream' in mplayer in order to avoid this
choppiness?

Regards,
Mrc.

On 4/7/07, Jorge Fábregas < jfabregas at onelinkpr.net> wrote:
>
> On Saturday 07 April 2007 5:53 am, Mrc Gran wrote:
> > The following video works fine on Windows Media Player.
> > But it is *very* choppy in mplayer, impossible to watch.
>
> Hi,
>
> I can confirm the behaviour (using the command line you used) but it plays
>
> fine if I specify the cache option.  Try using:
>
> mplayer -cache 4096 ....
>
> Why dows Windows Media Player plays it fine? Threre are 2 reasons I think:
>
> 1- Apparently the bandwidth for the site is not good
> 2- Windows Media Player caches more data than the default caching in
> mplayer
> whe "cache" is not specified.
>
> HTH,
> Jorge
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