Help with MSU Deinterlacer

Textbook · 26th September 2008, 06:37

I am new to AVISynth and I am trying to test out a deinterlacer I found, named MSU Deinterlacer. Previously I have used Smart Deinterlacer with VirtualDub and AVIDemux, but MSU looks like it would work better. My main use for this is TV Tuner captures from an analog cable source. Mainly ice hockey games that I wish to archive.

My TV Tuner is a Hauppauge PVR-150. This card has a hardware Mpeg-2 Encoder, so everything is already encoded into Mpeg-2 (PS) right from the get-go. 720x480 resolution, 30fps, up to 10mbps CBR.

I have uploaded a 30-second sample clip here: http://www.360mods.net/hockey/test.zip

As you can see, interlacing has a huge effect on this type of footage, because of the fast motion and high contrast (dark sticks / players on white ice). Here is frame 500 of the above video:

I am trying to use AVISynth, MSU Deinterlacer filter, and Virtualdub to deinterlace the above video, and this is my sample script:

DirectShowSource("C:\Documents and Settings\Textbook\Desktop\test.mpg")
ConvertToYUY2()
LoadPlugin("C:\Documents and Settings\Textbook\Desktop\msu_fieldshiftfixer.dll")
AssumeFieldBased()
MSU_FieldShiftFixer(1,0,0)
ConvertToRGB24()

When I try this, the video just comes out the same, still interlaced.

vampiredom · 26th September 2008, 06:49

FieldShifter is not a deinterlacer. MSU's deinterlacer is not public, I believe. There are many other options for you. See this page for a start:
http://avisynth.org/mediawiki/Extern...#Deinterlacing

Alex_ander · 26th September 2008, 08:07

FieldShiftFixer is for restoration of progressive video, where some parts got interlacing by field shifting between even/odd frames. You have interlaced video from TV and even with a right tool for deinterlacing (like TDeint, LeakKernelDeint, Yadif) you can only improve it for PC playback (using double output framerate). Deinterlacing a fast motion video (like sports) at original framerate kills half of motion phases thus making it look worse on TV.

vampiredom · 26th September 2008, 08:24

Also lose the AssumeFieldBased() line... This is not what you want. You should instead use (if anything) AssumeTFF() or AssumeBFF() to tell AviSynth the field order of the clip. Also take a look at DGIndex -> mpeg2source() instead of DirectShowSource(). mpeg2source should set the field order correctly, so you probably won't need to "assume" anything.

Textbook · 26th September 2008, 19:18

Ahh, thank you folks. I was confused, thinking the field shift fixer was a deinterlacer. My apologies. I will stick to yadif and smart deinterlacer then. Thanks everybody!

Mounir · 8th May 2009, 00:36

Does someone know if MSU will release their deinterlacer ?

Judging by the example they've provided it's really good !

Is there a deinterlacer that give similar results with avisynth ??

aegisofrime · 8th May 2009, 04:12

I'm gonna have to say TGMC.

Terka · 8th May 2009, 07:53

not all you see is good. static pictures is one thing, flickering video other. try TGMC, it is slow, but far better than all other deinterlace filters ive seen.

26th September 2008, 06:37	#1 \| Link
Textbook Registered User Join Date: Aug 2008 Posts: 2	Help with MSU Deinterlacer I am new to AVISynth and I am trying to test out a deinterlacer I found, named MSU Deinterlacer. Previously I have used Smart Deinterlacer with VirtualDub and AVIDemux, but MSU looks like it would work better. My main use for this is TV Tuner captures from an analog cable source. Mainly ice hockey games that I wish to archive. My TV Tuner is a Hauppauge PVR-150. This card has a hardware Mpeg-2 Encoder, so everything is already encoded into Mpeg-2 (PS) right from the get-go. 720x480 resolution, 30fps, up to 10mbps CBR. I have uploaded a 30-second sample clip here: http://www.360mods.net/hockey/test.zip As you can see, interlacing has a huge effect on this type of footage, because of the fast motion and high contrast (dark sticks / players on white ice). Here is frame 500 of the above video: I am trying to use AVISynth, MSU Deinterlacer filter, and Virtualdub to deinterlace the above video, and this is my sample script: DirectShowSource("C:\Documents and Settings\Textbook\Desktop\test.mpg") ConvertToYUY2() LoadPlugin("C:\Documents and Settings\Textbook\Desktop\msu_fieldshiftfixer.dll") AssumeFieldBased() MSU_FieldShiftFixer(1,0,0) ConvertToRGB24() When I try this, the video just comes out the same, still interlaced.

26th September 2008, 06:49	#2 \| Link
vampiredom Registered User Join Date: Aug 2008 Posts: 233	FieldShifter is not a deinterlacer. MSU's deinterlacer is not public, I believe. There are many other options for you. See this page for a start: http://avisynth.org/mediawiki/Extern...#Deinterlacing Last edited by vampiredom; 26th September 2008 at 08:20.

26th September 2008, 08:24	#4 \| Link
vampiredom Registered User Join Date: Aug 2008 Posts: 233	Also lose the AssumeFieldBased() line... This is not what you want. You should instead use (if anything) AssumeTFF() or AssumeBFF() to tell AviSynth the field order of the clip. Also take a look at DGIndex -> mpeg2source() instead of DirectShowSource(). mpeg2source should set the field order correctly, so you probably won't need to "assume" anything. Last edited by vampiredom; 26th September 2008 at 08:27.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

26th September 2008, 08:07	#3 \| Link
Alex_ander Registered User Join Date: Apr 2008 Location: St. Petersburg, Russia Posts: 334	FieldShiftFixer is for restoration of progressive video, where some parts got interlacing by field shifting between even/odd frames. You have interlaced video from TV and even with a right tool for deinterlacing (like TDeint, LeakKernelDeint, Yadif) you can only improve it for PC playback (using double output framerate). Deinterlacing a fast motion video (like sports) at original framerate kills half of motion phases thus making it look worse on TV.

26th September 2008, 19:18	#5 \| Link
Textbook Registered User Join Date: Aug 2008 Posts: 2	Ahh, thank you folks. I was confused, thinking the field shift fixer was a deinterlacer. My apologies. I will stick to yadif and smart deinterlacer then. Thanks everybody!

8th May 2009, 00:36	#6 \| Link
Mounir Registered User Join Date: Nov 2006 Posts: 768	Does someone know if MSU will release their deinterlacer ? Judging by the example they've provided it's really good ! Is there a deinterlacer that give similar results with avisynth ??

8th May 2009, 04:12	#7 \| Link
aegisofrime Registered User Join Date: Apr 2009 Posts: 478	I'm gonna have to say TGMC.

8th May 2009, 07:53	#8 \| Link
Terka Registered User Join Date: Jan 2005 Location: cz Posts: 702	not all you see is good. static pictures is one thing, flickering video other. try TGMC, it is slow, but far better than all other deinterlace filters ive seen.