[opendtv] Re: 20040722 Thundering Thursday Thanks (Mark's Mon day Memo)
- From: Kon Wilms <kon@xxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 22 Jul 2004 19:17:18 -0700
4Mbit is pretty high for an SD feed. 3-3.5 should be more than enough.
I'm not sure what encoder and mux youre using, but there are some that
let you prioritize your HD VBR at the MUX in order to squelch the SD
feed if it is being bitrate starved.
Cheers
Kon
GaryBliev@xxxxxxx wrote:
> Personal example: We went on the air with DT in January. We could only air
> the PBS national HD feed. They encode video at about 16-17 mpbs. So, when we
> only aired them, the bit rate was 16-17 mpbs.
>
> After we were able to get our encoders working, we bit rate reduced to
> 13.3mpbs for the HD to make room for a 4mb SD service. Shortly afterward we
> also
> converted the 1080i to 720p.
>
> So, the HDTV we have now is not the HDTV we had in January.
>
> We now have stat-mux enabled, so our HD bit rate is now varying between 11
> and 17 mbps. But we're still at 720p.
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