[mythtv-users] Aspect ratio
Rich.West at wesmo.com
Mon Apr 2 19:12:03 UTC 2007
Nick Morrott wrote:
> On 02/04/07, Rich West <Rich.West at wesmo.com> wrote:
>> I'm having trouble getting this 'right', and was hoping that someone
>> might be able to point me in the right direction...
>> On one of our mythtv boxes (I have not tested against the other), the
>> internal MythTV video player tends to hiccup or skip when playing the
>> video off of the network drives (this has become more apparent with the
>> later fixes releases from atrpms) almost as if it were having buffering
>> problems (others on the list have reported "me too" type of problems).
>> So, I thought I would try out using another player when displaying a DVD
>> Video (ISO), like mplayer and xine, to see if I could make it 'just work'.
>> I picked a real 16:9 aspect movie (one that identified itself as 1.78:1,
>> which works out to be 16:9) and tested with that. But, oddly, I hit
>> another issue... the aspect display didn't seem right. In this
>> instance, the picture should happily fill the screen with no black bars
>> at the top and bottom of the screen, but I'm seeing a heavily
>> letterbox'ed image with large bars at the top and bottom of the screen.
>> Interestingly enough, mplayer was the first one to give me an indication
>> that, perhaps, I have something set wrong within X. Now, I am no
>> mplayer guru, but could this an indication of a missing mplayer option
>> or an incorrect X setup for DVD playback?
> If you're missing a suitable DisplaySize setting in your X config,
> read http://www.mythtv.org/wiki/index.php/Display_Size for more info.
and James Warden wrote:
> if you're using mplayer, then don't forget the option
> -monitoraspect <what-ever-it-is>
> If you try to watch a 16:9 on a 4:3 monitor, then you should use 4:3
> or 1.3333 as a value to this option. If you have a 16:10 monitor, then
> use 1.6.
> That should solve the problem with mplayer.
> If you're using xine, cycle through different formats with the 'A' key
> and zoom in if needed with the 'Z' key (Shift+Z zooms out). You can
> probably automate this with xine in the config file or some place else.
Ooo.. great tips on the options to mplayer. Thanks!
Ahh.. I wonder the DisplaySize stuff is causing it.
I'm using the nVidia driver and have it set to HD480p:
Option "UseEDID" "FALSE"
Option "ConnectedMonitor" "TV"
Option "TvOutFormat" "Component"
Option "TVStandard" "HD480p"
Option "metamodes" "CRT: 720x480 +0+0"
Option "AddARGBGLXVisuals" "True"
Modes "640x480" "720x480" "1280x720" "1920x1018"
Viewport 0 0
Modes "800x600" "640x480"
And Xorg.log.0 shows:
(II) NVIDIA(0): Setting mode "CRT:720x480+0+0"
(II) Loading extension NV-GLX
(II) NVIDIA(0): NVIDIA 3D Acceleration Architecture Initialized
(II) NVIDIA(0): Using the NVIDIA 2D acceleration architecture
I'll have to check out the display size wiki entry to see if altering
some of the options helps.
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