[mythtv-users] ivtv capture is good, but mythtv hoses it
Raphael Pooser
rpooser at gmail.com
Wed Jun 27 15:42:36 UTC 2007
Michael T. Dean wrote:
> On 06/25/2007 10:42 PM, Aaron Nauman wrote:
>
>> Does anyone have any idea whether the changes in the ivtv settings
>> below could cause jitter while capturing?
>>
>
> Use the attached script to find your recording profile details, i.e.:
>
> mysql -umythtv -p mythconverg < recording_profile.sql > results
>
> For comparison, the values I use are value at the bottom of this post.
> It gives basically VCR quality recordings that are 1.15GiB/hr. Really,
> the AvgBitrate should probably be 4500 and the MaxBitrate should be 6000
> for best quality (anything higher--for either--is wasted bits), but I
> chose quantity over quality (the source is low quality, anyway). The
> stream type is critical...
>
> Mike
>
> Profile: Default
> Width: 720
> Height: 480
> StreamType: DVD-Special 2
> AspectRatio: 4:3
> AvgBitrate: 2200
> MaxBitrate: 3000
> AudioSampleRate: 48000
> MP3Quality: 7
> MPEG2AudioType: Layer II
> AudioBitrateL1: 448
> AudioBitrateL2: 256
>
>
>
Mike,
Can you expound on the stream type point? I see you have DVD-Special 2.
I'm using the default that's first selected in the recording profile,
something like Mpeg2-TS or similar.
Is there a big difference between that and DVD-Special? Do these streams
have anything to do with the fps of the recordings?
Thanks.
Raphael
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