[Ffmpeg-devel] [Ffmpeg-devel-old] H264 streams on Astra

Måns Rullgård mru
Mon Jun 6 22:44:55 CEST 2005

Nico Sabbi <nsabbi at tiscali.it> writes:

> Hi,
> for those of you can access this transponder in Astra : 11919/27500/H/
> pids 767, 772,  0, 98(pmt)
> there's an interesting stream: H264 streamed at 1920x1024 interlaced.

Can't you save a sample, and upload it to the usual place?  What's the

> Unfortunately libavcodec can't decode it atm :(

Is it missing support for interlacing?

> The funny part is that this stream has a video bitrate of ~17 Mb/s!
> Isn't H264 supposed to reduce the bitrate requirement? This figure
> is much higher than the highest mpeg2 I've ever seen (12~13 mb/s).

H.264 HD is usually around 6Mbps.  MPEG2 HD is in the 20Mbps range.
Possibly they are testing the encoders.  I'd keep an eye on that
transponder in case something interesting shows up.

> It seems that streams like this are interesting test-cases :)

So grab some samples before they go away.  You never know when they'll
come in handy.

Several European broadcasters are preparing for HD H.264 rollout at
the end of the year.  They are likely to do test runs to make sure the
entire chain works.

M?ns Rullg?rd
mru at inprovide.com

More information about the ffmpeg-devel mailing list