[mythtv-users] Untranscode

Michael T. Dean mtdean at thirdcontact.com
Sun Nov 20 16:18:26 EST 2005

Curtis White wrote:

> On 11/20/05, Michael T. Dean <mtdean at thirdcontact.com> wrote:
>> Curtis White wrote:
>>>>> So is there some alternative of this that will allow me to view those
>>>>> files on the TV? I don't really even care to convert them because I
>>>>> don't plan on keeping them. I just want to watch them on my 52" TV
>>>>> instead of my 19" monitor.
>>>> MythVideo (move the files from your recordings directory to your video
>>>> directory) and make sure you have John Harvey's Xv-compatible ivtvdev X
>>>> driver for your PVR-350.
>>> OK I do have the itdvdev driver and it is already setup on my
>>> framebuffer. So it sounds like I should be able to just move the
>>> files to my video directory and play them. I'll give that a try. Thank
>>> you.
>> Assuming you have a recent enough version that contains Xv support...
> I should have the most recent version. I only installed MythTV a
> couple weeks ago. I know I'm at version 1.8.1 I believe.

Actually, Myth has had Xv support "forever" (probably from the first 
version, although I didn't check).  It's the version of ivtvdev that's 
important here.

> I tried doing
> this and for some reason it isn't working. I might not have things
> setup quite right for the framebuffer.
> In my xorg.conf file, in the Device section for the framebuffer I have
> Section "Device"
> Identifier "Hauppauge WinTV PVR 350, Model 990"
> Driver "ivtvdev"
> Option "ivtv" "/dev/fb1"
> BusID "PCI:0:09:0"
> EndSection

This is right.

> But I have also seen instructions that show
> Option "fbdev" "/dev/fb1"

This is wrong (this works for old, old, old, old versions of the driver).

> I don't know which one is right. I have tried both and with the ivtv
> one I am able to watch Live TV on the TV screen. I don't know if it
> uses that or not for Live TV but since it was working I didn't change
> it.
> I am using the playback command:
> mplayer -fs -zoom -quiet -vo fbdev:/dev/fb1 %s

When doing that, you're explicitly telling mplayer /not/ to use Xv.  You 
need to use:

mplayer -fs -zoom -quiet -vo xv %s

On the bright side, you have a relatively recent version of ivtvdev as 
it's only within the last year and a half that it became incompatible 
with the fbdev code. Whether your version is new enough to support Xv, 
we still don't know.

> When I run that command from the command line replacing %s with the
> .nuv file, it starts buffering the video for a few seconds and then
> dies because the buffer is full. It seems it cannot display on the
> framebuffer device. Am I doing this wrong? How should I be doing it if
> so?

If you get skipped frames and/or max your processor usage, you don't 
have Xv support in your driver.  Search the lists for more info on 
installing it.  Any post from John Harvey explaining how to use it will 
have the right information.  Posts from anyone else may be referring to 
old versions of ivtvdev.


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