[MPlayer-users] Bug in bitrate calculation?

Nico Sabbi nsabbi at tiscali.it
Mon Dec 6 11:54:04 CET 2004

Mubashir Cheema wrote:

>When playing this Transport stream clip Mplayer reports its bitrate to be 4500kbps
>http://www.pchdtv.com/downloads/tst.tar  (rename to tst.ts after down load)
>This is obviously not correct.

it's the value reported in the video bitstream. Yes it's wrong, and yes 
it sucks,
but making a demuxer analyze the stream to determine the right bitrate is
slow and not worth the trouble.
If you want to know the real bitrate:

mencoder -o /dev/null -ovc copy -oac copy test.trp
and see the real bitrate in the square parenthesis

>I have tried a few other clips and bitrates on those were not as wildly off.
>I dont know of an easy way to calculate the bitrate on a mpeg-2 video 
>encapsulated in a transport stream or else I would have been able to confirm
>how far off MPlayer is on other video streams I tried.  Actually I ran into 
>this problem while trying to find a tool that would reliably report the 
>correct bitrate of a transport stream.
>My system:  Redhat Fedora Core 2
>uname -a: Linux home2 2.6.7-kraxel-pcHDTV #2 SMP Thu Jul 29 00:27:27 PDT 2004 i686 i686 i386 GNU/Linux
>MPlayer version: Tried both pre5 and the daily snapshot from today

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