[mythtv-users] (post)recording issues

Unit3 unit3 at demoni.ca
Thu Mar 20 23:26:53 UTC 2003

William Preston wrote:

>You've either dropped some acid or your CPU is not powerful enough.
>Though the former is preferred, it's more than likely the latter :)
Duuuuuuuuuuuuude! :))

>Upgrade your CPU or reduce the res you're capturing at and it shouldn't be
>as noticeable.
Hrm... as I suspected.

Now, on to another topic I'm curious about. Currently, I'm using WinDVR 
(under Windows :P ) to do my PVR-type activities, and it works alright, 
but not well enough to make me happy. (Audio syncing issues, missing 
scheduled captures, and more) Anyway, after I record shows, I typically 
use VirtualDub to edit out the commercials, clip edges of the video 
(such as sports stations' static banners along the bottom of the 
screen), and then re-encode into other audio and video codecs so I can 
fit my shows onto CDR.

So, I guess my question is: does anyone know of any video editing 
software for Linux that can do these kinds of simple things (cutting, 
cropping, re-encoding, etc)? Preferrably something that can read the 
format(s) MythTV saves to, but I'd be willing to re-encode using 
mencoder and then edit, as long as the program could cut video together 
without re-encoding it a 3rd time.

I haven't seen *anything* yet, so I'd appreciate any and all suggestions.

Second, how hard would it be to have a choice of deinterlacing 
algorithms. I'm annoyingly picky, so if I think I can get better quality 
without spending more money, I'd like to. ;)  Specifically, I'm thinking 
of the SmoothDeinterlace plugin for VirtualDub (or possibly the 
deinterlacer used by DScaler), that does a nice job of turning 640x480, 
30fps interlaced input into 640x480, 60fps progressive output. I'd be 
willing to try porting the filter, if it wouldn't cause too many 
headaches for other parts of the system.

As sort of a postscript, here's a sillier question that I'm still 
interested in the answer for: how difficult would it be to let MythTV 
use different audio/video codecs, and/or different file formats that are 
more standardly accepted across platforms? It'd be nice if we could just 
record direct to, say, MPEG2, or to a Quicktime file using Apple's MJPEG 
(which can, among other things, preserve interlacing if that's desired). 
If we could do this, having a nicer deinterlace inside of MythTV is less 
important (to me), because you can post-process it easier.

Whew, that was sort of long. I've been rolling these questions around 
for a while as I've been using MythTV. Let me know what you guys think 
on this.


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