[mythtv-users] mythtv-users Digest, Vol 152, Issue 28
Jason Kitching
jason at jadrallypix.me.uk
Wed Nov 18 12:38:39 UTC 2015
> Hoi Jason,
>
> Wednesday, November 18, 2015, 11:19:46 AM, you wrote:
>
>
>>> Hoi Jason,
>>>
>>> Tuesday, November 17, 2015, 7:40:25 PM, you wrote:
>>>
>>>> I have a mixture of 50/60/24fps recordings/videos and at present my
>>>> xorg.conf file is set up to auto change the screen res accordingly
>>>> as
>>>> per the myth judder free entry in the wiki, and it does a fine job
>>>
>>>> However, due to the nature of how my screen hands 24fps, I'd prefer
>>>> that
>>>> 24fps to be broadcast as 60fps and have messed around in the xorg
>>>> file
>>>> to try and do this but failed miserablly. Is it even possible?
>>>
>>>> I can at present, manually change the res in either the frontend
>>>> setup
>>>> so it broadcasts at 60Hz rather than Auto or change it in
>>>> nvidia-settings and that works ok, but would prefer an automatic
>>>> resolution change to make things a little easier and to make it a
>>>> bit
>>>> more other half and kids friendly
>>>
>>>> I've included my xorg.conf to see if anyone can think of any entries
>>>> that need adding or amending.
>>>
>>>> Cheers
>>>
>>>> Jason
>>>
>>>> Section "Monitor"
>>>> Identifier "Monitor0"
>>>> VendorName "Unknown"
>>>> ModelName "ONK TX-SR876"
>>>> HorizSync 28.0 - 83.0
>>>> VertRefresh 56.0 - 62.0
>>>> ModeLine "1920x1080 at 50" 148.500 1920 2448 2492 2640 1080
>>>> 1084
>>>> 1089 1125 +hsync +vsync
>>>> ModeLine "1920x1080 at 60" 148.500 1920 2008 2052 2200 1080
>>>> 1084
>>>> 1089 1125 +hsync +vsync
>>>> ModeLine "1920x1080 at 24" 74.250 1920 2558 2602 2750 1080
>>>> 1084
>>>> 1089 1125 +hsync +vsync
>>>> ModeLine "1920x1080 at 23.976" 74.175 1920 2558 2602 2750
>>>> 1080
>>>> 1084 1089 1125 +hsync +vsync
>>>> ModeLine "1920x1080 at 50i" 74.250 1920 2448 2492 2640 1080
>>>> 1085
>>>> 1095 1125 +hsync +vsync interlace
>>>> ModeLine "1920x1080 at 60i" 74.250 1920 2008 2052 2200 1080
>>>> 1085
>>>> 1095 1125 +hsync +vsync interlace
>>>> ModeLine "1920x1080 at 59.94" 148.350 1920 2008 2052 2200
>>>> 1080
>>>> 1084 1089 1125 +hsync +vsync
>>>> ModeLine "1920x1080 at 59.94i" 74.175 1920 2008 2052 2200
>>>> 1080
>>>> 1085 1095 1125 +hsync +vsync interlace
>>>> Option "DPMS"
>>>> EndSection
>>>
>>>> Section "Device"
>>>> Identifier "Device0"
>>>> Driver "nvidia"
>>>> VendorName "NVIDIA Corporation"
>>>> BoardName "GeForce GT 430"
>>>> Option "FlatPanelProperties" "Scaling = Native"
>>>> Option "RegistryDwords" "PerfectLevelSrc=0x3322;
>>>> PowerMixerDefaultAC=0x1"
>>>> EndSection
>>>
>>>> Section "Screen"
>>>> Identifier "Screen0"
>>>> Device "Device0"
>>>> Monitor "Monitor0"
>>>> DefaultDepth 24
>>>> Option "TwinView" "0"
>>>> Option "TwinViewXineramaInfoOrder" "DFP-1"
>>>> Option "metamodes" "1920x1080_50 +0+0"
>>>> Option "NoLogo" "False"
>>>> SubSection "Display"
>>>> Depth 24
>>>> EndSubSection
>>>> EndSection
>>>> _______________________________________________
>>>
>>> Does your screen handle 48fps? then set it at that refreshrate, that
>>> also should not judder. or triple 24 = 73.
>>>
>>>
>>> Tot mails,
>>> Hika mailto:hikavdh at gmail.com
>>>
>>> "Zonder hoop kun je niet leven
>>> Zonder leven is er geen hoop
>>> Het eeuwige dilemma
>>> Zeker als je hoop moet vernietigen om te kunnen overleven!"
>>>
>>> De lerende Mens
>>>
>>>
>>>
>> It's not that it judders on 24fps, far from it, very smooth, the panel
>> performs better at 60fps when showing 24fps content (known issue on
>> the
>> panasonic plasma forums).
>
>> I can manually make the switch to run on 60fps, but my query is
>> whether
>> I can get the xorg to automatically send 24fps out as 60fps, to save
>> me
>> having to manually update everytime I swtich from 24fps to 50fps.
>
>
>> Cheers.
>
>> Jason
>> _______________________________________________
>
> That would mean transcoding and I very much think you will loose a lot
> in quality, maybe no judder but similar. But I'm no expert in this.
> I was just thinking that possibly your panel performs better at 48 or
> 72 fps.
>
>
> Tot mails,
> Hika mailto:hikavdh at gmail.com
>
> "Zonder hoop kun je niet leven
> Zonder leven is er geen hoop
> Het eeuwige dilemma
> Zeker als je hoop moet vernietigen om te kunnen overleven!"
>
> De lerende Mens
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 18 Nov 2015 21:49:28 +1100
> From: blind Pete <0123peter at gmail.com>
> To: mythtv-users at mythtv.org
> Subject: Re: [mythtv-users] auto frame rate change
> Message-ID: <20151118214928.355f2bbd at PPlive>
> Content-Type: text/plain; charset=US-ASCII
>
> On Tue, 17 Nov 2015 18:40:25 +0000
> Jason Kitching <jason at jadrallypix.me.uk> wrote:
>
> It is probably not doing what you think it is doing.
>
>> I have a mixture of 50/60/24fps recordings/videos and at present my
>> xorg.conf file is set up to auto change the screen res accordingly as
>> per the myth judder free entry in the wiki, and it does a fine job
>>
>> However, due to the nature of how my screen hands 24fps, I'd prefer
>> that 24fps to be broadcast as 60fps and have messed around in the
>> xorg file to try and do this but failed miserablly. Is it even
>> possible?
>>
>> I can at present, manually change the res in either the frontend
>> setup so it broadcasts at 60Hz rather than Auto or change it in
>> nvidia-settings and that works ok, but would prefer an automatic
>> resolution change to make things a little easier and to make it a bit
>> more other half and kids friendly
>>
>> I've included my xorg.conf to see if anyone can think of any entries
>> that need adding or amending.
>>
>> Cheers
>>
>> Jason
>>
>> Section "Monitor"
>> Identifier "Monitor0"
>> VendorName "Unknown"
>> ModelName "ONK TX-SR876"
>> HorizSync 28.0 - 83.0
>> VertRefresh 56.0 - 62.0
>
> If this is true (and your computer probably read it from your monitor's
> firmware) then your monitor can not display 24 fps or 50 fps. Mythtv
> and / or your graphics card is "performing magic" and sending 60 fps
> (or
> maybe 59.94 fps) signals to your monitor.
>
> If you really like mucking about, it might be possible to override the
> monitor's firmware and drive it at 50 fps; maybe even 48 fps (24 x 2).
> But 24 fps or 72 (24 x 3) seems very unlikely.
>
>> ModeLine "1920x1080 at 50" 148.500 1920 2448 2492 2640 1080
>> 1084 1089 1125 +hsync +vsync ModeLine "1920x1080 at 60" 148.500
>> 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync ModeLine
>> "1920x1080 at 24" 74.250 1920 2558 2602 2750 1080 1084 1089 1125 +hsync
>> +vsync ModeLine "1920x1080 at 23.976" 74.175 1920 2558 2602 2750
>> 1080 1084 1089 1125 +hsync +vsync ModeLine "1920x1080 at 50i"
>> 74.250 1920 2448 2492 2640 1080 1085 1095 1125 +hsync +vsync
>> interlace ModeLine "1920x1080 at 60i" 74.250 1920 2008 2052 2200
>> 1080 1085 1095 1125 +hsync +vsync interlace ModeLine
>> "1920x1080 at 59.94" 148.350 1920 2008 2052 2200 1080 1084 1089 1125
>> +hsync +vsync ModeLine "1920x1080 at 59.94i" 74.175 1920 2008 2052
>> 2200 1080 1085 1095 1125 +hsync +vsync interlace Option
>> "DPMS" EndSection
>>
>> Section "Device"
>> Identifier "Device0"
>> Driver "nvidia"
>> VendorName "NVIDIA Corporation"
>> BoardName "GeForce GT 430"
>> Option "FlatPanelProperties" "Scaling = Native"
>> Option "RegistryDwords" "PerfectLevelSrc=0x3322;
>> PowerMixerDefaultAC=0x1" EndSection
>>
>> Section "Screen"
>> Identifier "Screen0"
>> Device "Device0"
>> Monitor "Monitor0"
>> DefaultDepth 24
>> Option "TwinView" "0"
>> Option "TwinViewXineramaInfoOrder" "DFP-1"
>> Option "metamodes" "1920x1080_50 +0+0"
>> Option "NoLogo" "False"
>> SubSection "Display"
>> Depth 24
>> EndSubSection
>> EndSection
>
> --
> testing
> bP
>
>
Sorry not explained myself properly
The "Monitor" on the xorg is in fact my AV Receiver, which is set to
just pass through the video signal. This is then hooked up to the Plasma
tv and both accept and run 24fps. Possible i've completely messed up the
HorizSync and VertRefresh the amount of manual editing I've been doing
to the file recently.
As for losing any quality, the picture is exactly the same quality (that
I can see anyway) whether it's 24hz or 60hz in nvidia-settings. The only
difference being that the plasma telly handles posterization better on
60hz than it does on 24hz. That's the only reason why I now switch to
60hz when any 24fps material is being shown.
Like I said, no big deal if I simply change from Auto to 60hz in Myth
setup when I want to watch a ripped blu-ray and then switch back to Auto
when I go back to watching normal tv programmes, just thought I'd try
and save myself a little time in seeing if the xorg could handle auto
transmitting 24fps as 60.
Cheers.
Jason
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