[mythtv-users] Frames per second?

[Graham Dunn]

I'm currently getting up to speed running mythtv on debian unstable (I
started with stable / Woody), but needed the later nvtv versions in
unstable).

I'm writing down basic steps as I go, and I'd be interested in filling
in details if you feel like collaborating ...

On Tue, Apr 22, 2003 at 11:59:28AM -0700, Ray Olszewski wrote:
> At 09:38 AM 4/22/2003 -0500, Robert Kulagowski wrote:
> [...]
> 
> >Sure; write something up and I'll look at getting it included in the
> >HOWTO.
> 
> Try this (in an appropriate spot in section 3.2) --
> 
> If your video-capture card uses the bttv kernel module (the common ones 
> do), you will want to be sure that when it loads, it loads with the option 
> "gbuffers=16" or "gbuffers=32" (exactly how to do this is a bit 
> distribution-specific). These settings give the bttv module enough buffer 
> space to store 16 or 32 capture frames, instead of the default value of 2. 
> The added buffering helps to minimize frame loss at times when the capture 
> stream is changing rapidly (fast pans, for example) in ways that slow down 
> the encoding process.
> 
> May I ofer a couple of other suggestions as well?
> 
> First, I can't find where the HowTo is explicit about which *version* of 
> MythTV it is discussing. Since the current Debian-Sid version (which I'm 
> attempting to install and configure) seems to be a bit different from that 
> latest CVS version, this lack of information makes it hard for me to use 
> the HowTo with confidence. You might want to clarify this in some very 
> obvious place.
> 
> Second, a specific section I had trouble with yesterday is section 9.1, 
> particularly where it reads:
> 
> >Switch to the setup directory and run the setup program:
> >
> >    $ cd setup
> >    $ ./setup
> 
> I had two problems with this:
> 
> 1. The command "cd setup" is itself meaningless if the reader does not know 
> what PWD he or she is supposed to execute it *from* (since it is a relative 
> path). Neither earlier in this section, nor anywhere else I read (I admit I 
> haven't read every word) can I find this clarified. In fact, in my reading 
> I found other places (e.g., the mysql section) where relative paths are 
> specified but no prior indication of the PWD appears, at least not close by.
> 
> 2. On my Debian-Sid distribution, I can't find a program or directory 
> called "setup" anywhere on the system (exccpt for some setup scripts 
> related to dpkg). I can, however, find "/usr/bin/mythtv-setup", which when 
> run seems to be the program the HowTo section goes on to document. This is 
> what occasioned my first suggestion above, since it implies either that (a) 
> the Debian-Sid binaries do not reflect current, or standard, MythTV 
> practice or (b) the HowTo itself does not reflect current, or standard, 
> MythTV practice. I'd offer a fix, but since I don't know *which* problem 
> exists, I can't.
> 
> 
> 
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