[MPlayer-users] MPEG2 and wrong bitrate displayed?

[Nico]

Pasi Kärkkäinen wrote:

>Hi!
>
>When I play MPEG2 videos (mainly from DVB), mplayer says this:
>
>VIDEO:  MPEG2  720x576  (aspect 2)  25.000 fps  10000.0 kbps (1250.0 kbyte/s)
>AUDIO: 48000 Hz, 2 ch, 16 bit (0x10), ratio: 28000->192000 (224.0 kbit)
>
>I have a file, which is roughly 900 MB big, and it's something like 50 minutes
>long. 
>
>If I calculate the average bitrate for the whole file (including both audio
>and video), I get something like:
>
>900 MB / 50 mins == 18 MB / min
>18 MB / 60 secs == 0.3 MB / sec
>0.3 MB * 1024 kB == 307.2 kB
>
>307.2 kB * 8 bits == 2457.6 kbit/sec
>
>.. and mplayer shows 10000.0 kbps for the plain video.. Can anybody explain
>this? Something related to VBR nature of MPEG2? 
>
>-- Pasi Kärkkäinen
>       
>                                   ^
>                                .     .
>                                 Linux
>                              /    -    \
>                             Choice.of.the
>                           .Next.Generation.
>
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>

10 mb/s is only indicative; I've seen 3 Mb/s disguised as 15