25 Frames per second on EVR

frankwaan · 2008-08-29, 11:14

Hi,

When playing DVD content in EVR (NVidia purevideo codec or Cyberlink PowerDVD 8 codec), I get 25 fps max. on EVR. VMR gives 50FPS, which is a noticable difference. Two questions:

- why is it such a big difference (the DVD is encoded in 25fps according to g-spott). I've got my TV setup at 50Hz / 1920x1080
- is it possible to get 50fps in EVR?

Also, pressing Shift+F1 in EVR, shows a resolution of 1280x720 (while my native and desktop resolution are 1920x1080)... why's that?

Thanks!

TV-Server Version: V1.0 RC2
MediaPortal Version: V1.0 RC2
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Windows Version: Vista Home Premium SP1 32-bit
CPU Type: AMD Athlon X2 4850e
HDD: Samsung Spinpoint F1 HD753LJ 750GB
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1. TV Card Type: DVB-C
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2. TV Card:
2. TV Card Type:
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3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
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MPEG2 Video Codec: ffdshow rev 2063
MPEG2 Audio Codec: ffdshow rev 2063
h.264 Video Codec: Cyberlink PowerDVD
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TV - HTPC Connection: HDMI

tourettes · 2008-08-29, 19:01

If the material is 25 fps progressive then the correct display rate is 25 fps frames. Most likely VRM9 is just reporting the doubled frames that its going to display (just like EVR is doing, but reporting only differently). The results should be the same with EVR & VMR9, both are as smooth as its not possible/feasible to generate missing frames from the 25 -> 50 pull up (well in theory it is, but lets not get into that...)

Now if the material is interlaced the fps should be 50, as the material actually consist 50fps, with half information per every odd and even frames. Many software (maybe even all?) software codecs are blending these interlaced frames together and will show the decoded results as 25fps.

frankwaan · 2008-08-30, 10:56

Hi tourettes,

Thanks for your clearly explination. The fact that the VMR renderer plays movies more smootly then EVR, should be the result of other problems. I've read a lot of AMD780G chipset problems when it comes to rendering with EVR. Seems I need to get more into that.
I'm currently using Catalyst 8.7, anyone knows if there's a better one around?

Frank

2008-08-29, 11:14	#1 (permalink)
frankwaan Portal Member Join Date: Aug 2008 Location: Hengelo (O) Posts: 88 Thanks: 2 Thanked 0 Times in 0 Posts Country: My System	25 Frames per second on EVR Hi, When playing DVD content in EVR (NVidia purevideo codec or Cyberlink PowerDVD 8 codec), I get 25 fps max. on EVR. VMR gives 50FPS, which is a noticable difference. Two questions: - why is it such a big difference (the DVD is encoded in 25fps according to g-spott). I've got my TV setup at 50Hz / 1920x1080 - is it possible to get 50fps in EVR? Also, pressing Shift+F1 in EVR, shows a resolution of 1280x720 (while my native and desktop resolution are 1920x1080)... why's that? Thanks! TV-Server Version: V1.0 RC2 MediaPortal Version: V1.0 RC2 MediaPortal Skin: Windows Version: Vista Home Premium SP1 32-bit CPU Type: AMD Athlon X2 4850e HDD: Samsung Spinpoint F1 HD753LJ 750GB Memory: Corsair TWIN2X2048-6400C4 2GB Motherboard: Gigabyte GA-MA78GM-S2H Video Card: ATI Radeon HD3200 (intergrated) Video Card Driver: Sound Card: Sound Card AC3: Sound Card Driver: 1. TV Card: Terratec Cinergy C 1. TV Card Type: DVB-C 1. TV Card Driver: 2. TV Card: 2. TV Card Type: 2. TV Card Driver: 3. TV Card: 3. TV Card Type: 3. TV Card Driver: 4. TV Card: 4. TV Card Type: 4. TV Card Driver: MPEG2 Video Codec: ffdshow rev 2063 MPEG2 Audio Codec: ffdshow rev 2063 h.264 Video Codec: Cyberlink PowerDVD Satelite/CableTV Provider: HTPC Case: Antec Fusion Cooling: AMD Stock cooler Power Supply: Antec 430W Remote: Logitech Harmony 525 TV: Sony KDL40D3500 TV - HTPC Connection: HDMI

2008-08-29, 19:01	#2 (permalink)
tourettes Portal Developer Join Date: Jan 2005 Age: 32 Posts: 8,456 Thanks: 351 Thanked 638 Times in 415 Posts	If the material is 25 fps progressive then the correct display rate is 25 fps frames. Most likely VRM9 is just reporting the doubled frames that its going to display (just like EVR is doing, but reporting only differently). The results should be the same with EVR & VMR9, both are as smooth as its not possible/feasible to generate missing frames from the 25 -> 50 pull up (well in theory it is, but lets not get into that...) Now if the material is interlaced the fps should be 50, as the material actually consist 50fps, with half information per every odd and even frames. Many software (maybe even all?) software codecs are blending these interlaced frames together and will show the decoded results as 25fps. __________________ http://day2.no-ip.org/ "Commy64 - The problem there is that Oprah was on. MP tried to save you by blanking the screen"

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2008-08-30, 10:56	#3 (permalink)
frankwaan Portal Member Join Date: Aug 2008 Location: Hengelo (O) Posts: 88 Thanks: 2 Thanked 0 Times in 0 Posts Country: My System	Hi tourettes, Thanks for your clearly explination. The fact that the VMR renderer plays movies more smootly then EVR, should be the result of other problems. I've read a lot of AMD780G chipset problems when it comes to rendering with EVR. Seems I need to get more into that. I'm currently using Catalyst 8.7, anyone knows if there's a better one around? Frank