[mythtv] Approximating bit rates (in statusbox)

Keith C mythtv at keithandjill.com
Mon Dec 5 00:50:58 UTC 2005


On Dec 4, 2005, at 6:27 PM, Hal Burch wrote:

> StatusBox displays bitrates for two "profiles" -- average and HDTV.
> It uses preset values for this, without regard for your configuration.
>
> Thus, before, it said:
> 228 GB total, 161 GB used, 67 GB (or 30%) free.
> 35 hours left using your typical recording profile.
> 8 hours left using recording profile 'HDTV'.
>
> What I'd like it to say:
> 228 GB total, 161 GB used, 67 GB (or 30%) free.
> 38 hours left using your typical recording profile
> 35 hours left, using recording profile 'Default'
> 27 hours left, using recording profile 'High Quality'
> 39 hours left, using recording profile 'Live TV'
> 45 hours left, using recording profile 'Low Quality'
> 29 hours left, using recording profile 'RTjpeg/MPEG4'
> (your typical now meaning the average of the recordings on your
> system, instead of 5.5Mbps)
>
> I've got a rewrite of it to use the profiles actually on the system.
> However, I'm concerned that presuming that all incoming streams will
> use a codecparam set may not be true.  Does MythTV support digital
> MPEG inputs, and, if so, is there some way to detect a system
> configured in such a way?  Are there other circumstances where
> presuming codecparams contains the bitrate information (to be used by
> scheduled recordings) would be fallacious?
>

I'm assuming that my HD3000 card recording ATSC would not work with  
this, and I assume any DVB type driver wouldn't.  My bitrate would  
vary wildly based on whether the broadcast is 480i, 480p, 720p or 1080i.

Keith C


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