NextPVR Forums
  • ______
  • Home
  • New Posts
  • Wiki
  • Members
  • Help
  • Search
  • Register
  • Login
  • Home
  • Wiki
  • Members
  • Help
  • Search
NextPVR Forums Public NextPVR Support Legacy (v4.x and earlier) v
« Previous 1 … 409 410 411 412 413 … 433 Next »
LiveTV playback has wrong AR on all but TV1

LiveTV playback has wrong AR on all but TV1
peter_h
Offline

Member

Posts: 67
Threads: 24
Joined: Jan 2008
#1
2010-09-06, 12:56 AM
I've just installed 1.5.31.

In LiveTV, TV1 is the only channel (1-9) that fills the window. Pressing the numeric keys to browse to another channel results in a squished/stretched video image in the top-left of the window. Random colours or large grey blocks appear where the video isn't. See the attached image(s) for a screenshot.

If I go back to TV1, aspect ratio is correct and the video fills the screen - but still only for that channel.

I have no such issue with Media Portal on the same machine.

Decoder settings are: VRM9; MPC MPEG2 Video Decoder (Gabest); h264: ArcSoft Decoder.
Windows XPsp3 with nVidia 8600GT card with latest drivers.
Pete
Karori, Wellington, NZ

HARDWARE: AMD x4 9550, WinXP sp3, Hauppauge HVR-4000 (Freeview/DVB-T only ATM); Hauppauge HVR-1700 (DVB-T); 2 x GeForce 9600GT; All latest drivers; SPDIF out;
UHF rooftop aerial with a direct line-of-sight 3km to Mt KauKau.
SOFTWARE: MediaPortal 1.1; NPVR; Latest HVR4000 drivers; WinTV7; ArcSoft TotalMedia; Cyberlink PowerDVD 7.0; MPV Decoder; AC3Filter; Mpeg2DecFilter.ax; mmaacd.ax (Morgan AAC decoder)
sub
Online

Administrator

NextPVR HQ, New Zealand
Posts: 106,734
Threads: 767
Joined: Nov 2003
#2
2010-09-06, 01:19 AM
This is a bug in the nvidia video driver. Try either switching to EVR, or disable hardware acceleration in the video decoder.
peter_h
Offline

Member

Posts: 67
Threads: 24
Joined: Jan 2008
#3
2010-09-13, 01:32 AM
I changed my video card to a 9600GT and updated the drivers to the latest, and the behaviour remains.

Oddly though, if I right-click and choose Aspect Ratio > Fill, the video correctly fills the screen and stays that way on all channels, from then on, regardless of channel, and channel changes.

Also, there are no such issues on the same machine in MediaPortal.

Sub, is there any way you could force an "Aspect Ratio > Fill" when LiveTV is first started (or an an option to do so), so I don't have to manually do it every time?
Pete
Karori, Wellington, NZ

HARDWARE: AMD x4 9550, WinXP sp3, Hauppauge HVR-4000 (Freeview/DVB-T only ATM); Hauppauge HVR-1700 (DVB-T); 2 x GeForce 9600GT; All latest drivers; SPDIF out;
UHF rooftop aerial with a direct line-of-sight 3km to Mt KauKau.
SOFTWARE: MediaPortal 1.1; NPVR; Latest HVR4000 drivers; WinTV7; ArcSoft TotalMedia; Cyberlink PowerDVD 7.0; MPV Decoder; AC3Filter; Mpeg2DecFilter.ax; mmaacd.ax (Morgan AAC decoder)
sub
Online

Administrator

NextPVR HQ, New Zealand
Posts: 106,734
Threads: 767
Joined: Nov 2003
#4
2010-09-13, 01:42 AM
peter_h Wrote:I changed my video card to a 9600GT and updated the drivers to the latest, and the behaviour remains.
Thats because you've still got an nvidia card, so you still have this nvidia driver problem. The only way to avoid it is disable hardware acceleration in the decoder, or switch to EVR, or leave it in fill mode (with 16:9 channels on 16:9 tv), or use an ATI or other manufacturer card.

Quote:Also, there are no such issues on the same machine in MediaPortal.
This is because they're not using the Window's video renderer to display frames, but are instead using Direct3D to display the frames (much like the VMR9 Custom renderer in old GBPVR).

Quote:Sub, is there any way you could force an "Aspect Ratio > Fill" when LiveTV is first started (or an an option to do so), so I don't have to manually do it every time?
Sorry, not currently. I can try add somthing if you bump the thread in a couple of days though (busy with work stuff at the moment).
bdshaffer
Offline

Member

Posts: 67
Threads: 9
Joined: Apr 2005
#5
2010-09-13, 02:41 AM
I have similar AR problems with an ATI 4550 card on XP using VMR9, VMR7 or EVR.
sub
Online

Administrator

NextPVR HQ, New Zealand
Posts: 106,734
Threads: 767
Joined: Nov 2003
#6
2010-09-13, 03:10 AM
bdshaffer Wrote:I have similar AR problems with an ATI 4550 card on XP using VMR9, VMR7 or EVR.
With an ATI device, I'm sure you didnt have the same problem. The problem I referring to is a well known nvidia problem, and affects other apps too (DVBViewer, GBPVR etc). A thread on the nvidia forums about this problem can be found here: http://forums.nvidia.com/index.php?showtopic=15184

The characteristic symptoms of this are VMR, correct aspect ratio image in top/left but too small, and the rest of the screen filled with garbage from video memory.
johnsonx42
Offline

Posting Freak

Posts: 7,298
Threads: 189
Joined: Sep 2008
#7
2010-09-13, 03:30 AM
Sub, if you'll recall from the early days of NPVR, a lot of us (including me) had exactly the same problems with ATI cards. My screens looked EXACTLY the same as peter_h's screenshot in the first post, and the behavior was the same - FILL was the only aspect ratio that worked. That got me bugging you again about supporting negative aspect ratios with EVR, and you did come up with a solution which has worked 100% great since then... so I've not worried about the issue since.

All I can conclude is that ATI has somehow adopted the same driver bug as nvidia.
server: NextPVR 5.0.7/Win10 2004/64-bit/AMD A6-7400k/hvr-2250 & hvr-1250/Winegard Flatwave antenna/Schedules Direct
main client: NextPVR 5.0.7 Desktop Client; LG 50UH5500 WebOS 3.0 TV
sub
Online

Administrator

NextPVR HQ, New Zealand
Posts: 106,734
Threads: 767
Joined: Nov 2003
#8
2010-09-13, 03:37 AM
No, I dont remember.

I'm personally using an ATI card, and have never seen anything like it, but clearly remember it with Nvidia cards. The bug was never acknowledged by nvidia though, and it may have been more of a Microsoft renderer bug related to a particular DXVA mode which Nvidia used. Nvidia and ATI traditionally used different DXVA modes, but I havnt checked in recent years, and maybe they're both using the same mode now (the previously nvidia only mode).

Either way, VMR is the past. Personally I'd recommend people go with Win7 and EVR.
« Next Oldest | Next Newest »

Users browsing this thread: 1 Guest(s)



Possibly Related Threads…
Thread Author Replies Views Last Post
  Comskip Playback Odd Behavior kirschey 3 1,693 2021-09-27, 06:16 PM
Last Post: sub
  maximize goes to wrong monitor workmanrob 2 1,325 2020-12-27, 03:30 PM
Last Post: workmanrob
  Black Screen During Recording and Playback kirschey 2 1,738 2020-02-29, 04:48 PM
Last Post: kirschey
  No video or audio from start of playback smiffypr 8 3,656 2020-02-05, 05:11 PM
Last Post: smiffypr
  Audio/video sync problem on playback and program freeze when resuming zer 34 13,383 2019-12-21, 02:49 PM
Last Post: HarryH3
  Channel order wrong - any ideas? Bunkermentality 36 9,880 2019-12-17, 03:04 PM
Last Post: mvallevand
  Faster Playback? Rage321 5 2,536 2019-10-31, 01:23 AM
Last Post: sub
  Playback artefacts in recorded digital tv march 12 3,827 2019-10-25, 03:51 PM
Last Post: hdpvr-doug8796
  HDHR Recordings Include Data From Wrong Channel During Post-Padding BrettB 2 5,222 2019-10-12, 05:34 PM
Last Post: mvallevand
  IPTV Channel Looping/Playback Issues kalebroc 23 17,450 2019-10-08, 08:12 PM
Last Post: sub

  • View a Printable Version
  • Subscribe to this thread
Forum Jump:

© Designed by D&D, modified by NextPVR - Powered by MyBB

Linear Mode
Threaded Mode