[mythtv-users] Is there a good guide
on recording profilessomewhere?
DTR
dtr at edenforge.com
Tue Aug 31 15:32:27 EDT 2004
If I understand correctly what you are asking, yes there is an automatic
transcode option which transcode from MPEG2 to your MPEG4 format. I
believe you also have the option of deleting the original too although I
can't confirm this now since I'm at work. I have used the auto
transcode feature in the past but I've disabled it as I just delete 98%
of what I record immediately after watching it so it didn't make a lot
of sense to consume all those CPU cycles. It's certainly a great way
to go if you are into archiving however.
--
DTR
Dave K. Packham wrote:
> I always wondered why we cant use XVID/Divx to save older TV shows? I
> have several PC apps and the MythDVD RIP that will RIP a 2 hour movie
> into a nice 700 meg, 1.1gig for the MythDVD rip, file that has some
> great quality and sound. Even if it has to transcode two pass etc etc.
> My Myth has cycles to spare. How can I change the saved TV shows to do
> something like this? Is there and automagic option to capture in high
> bitrate MPEG2 from my PVR-250 and then transcode it in the background
> eventually replacing the MPEG2 file?
>
> Thanks
> Dave P
>
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Jay R. Ashworth
> Sent: Tuesday, August 31, 2004 11:12 AM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Is there a good guide on recording
> profilessomewhere?
>
> On Tue, Aug 31, 2004 at 01:52:06AM -0400, Michael T. Dean wrote:
>
>>On 08/29/2004 02:03 PM, Jay R. Ashworth wrote:
>>
>>>I'll second this. We're pretty happy with our Default, but less so
>>>with our Low Quality... and some suggestions on good mpeg2->4
>>>transcoding parameters would be nice too.
>>>
>>>I've put up a couple of pages at MythTV.info that people can post
>>>their parameters and comments on; they're underneath
>>>
>>>http://www.mythtv.info/moin.cgi/UserManual_2fTechnicalDetailsAppendix
>>>
>>>It's pretty much a copy and paste kind of thing.
>>>
>>>All contributions welcome. :-)
>>
>>Haven't yet set up an account on the wiki, so I'm posting here.
>
>
> Note that you can edit the wiki even if you *haven't* registered yet,
> though we encourage you to do so.
>
>
>>I've noticed a lot of people using high bitrates with the PVR-x50's,
>>but I'm using a pretty low bitrate and getting what I consider to be
>>excellent results. I will admit that I'm coming from about 5 years of
>
>
>>having only watched TV after recording everything to VHS in EP mode,
>>so I'm not the best judge of quality (anything beats an EP VHS
>>recording :). Also, I have a satellite signal piped to the PVR-350
>>via S-Video (but I'm using nVidia GF4MX440 for output for OpenGL and
>>Xv support), so signal noise/bad signal quality aren't a problem.
>
>
> I know what you mean.
>
>
>>Anyway, I was wondering what someone with a discriminating eye might
>>think of my settings. I'm using a bitrate of 2200 and max bitrate of
>>9800 and it seems to give me the best of both worlds--small files and
>>good quality. I'm averaging about 1 1/4 GB/hr. I've heard that
>>having a large range of bitrates tends to stress the encoder, but I
>>got 50 episodes and 174 hours of Olympics without problems. Also, I'm
>
>
>>using 640x480, but I can't tell a difference in quality between
>>480x480, 640x480, and 720x480. I might be switching to 720x480 to
>>make DVD authoring easier, but...
>
>
> Wow. I'll have to plug that in for comparison, but we're averaging
> 2.2GB/hr, which is clearly high. It may be the large differential that
> makes the card's job easier, we'll have to try that.
>
>
>>Also, I'm wondering if the poor quality people have mentioned is
>>actually noticeable on the TV or only when transcoding for/playing
>>back on a computer (or other progressive display).
>
>
> I can spot MPEG artifacting on direct un-transcoded playback, myself.
>
>
>>BTW, at the bottom is a nice little query that can summarize your
>>recording profile information in a compact cross-tab format. I'm
>>posting my data in the standard tabular format because the long-lines
>>of the cross-tab don't go well with text-based mail readers... (Oh,
>>and you should probably stretch your terminal window when running the
>>query.)
>
>
> *Very* cool; thanks. I'm going to toss that into a script.
>
> Cheers,
> -- jra
>
>
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>
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