[mythtv-users] recording formats - standard cable
beww at beww.org
Fri Dec 15 20:33:51 UTC 2006
On Dec 15, 2006, at 1:22 PM, Brett Kosinski wrote:
> I have some confusion as to what format I should be recording in.
> I have a haupage pvr-150 and am recording straight out of the wall
> cable ( 70 Channels no set top box. ).
> I do not have my myth box setup to display on a TV. Instead I just
> display on my 20 inch ( 1680 x 1050 ) widescreen monitor.
> I have it setup to record 720 x 480 lines. Im assuming that I am
> getting some benefit from this setting recording from standard cable.
> Actually, given that you're pulling straight from coax, you could
> probably reduce that to 640x480 or even 480x480. But much of this
> is quite subjective, so it's often worth it to play with the
> settings until you get something you like. Remember, generally
> speaking, at a given bitrate, the higher the resolution, the lower
> the encoding quality, as there's more frame to encode. So if
> there's no increase in detail going from 480x480 -> 720x480, your
> encoding quality will end up suffering for no good reason.
> As an aside, there is one other major reason to capture at
> 720x480: it's the native resolution of a DVD. Thus no scaling is
> necessary if you plan to burn the content.
That is very true, and a useful point.
Have a look at :
Note that there is a plateau beyond which all you are doing is making
your files larger.
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