I-o DATA GV-USB2 default settings sample

[boolian2]

Using S-video and OBS right now. Just received the capture card in the mail. The driver was easy to install with the included driver CD and the Google Translate app on my phone. You just point your phone at your computer screen and it translates the Japanese to English. Haven't received my DVD recorder for a TBC yet.

update: added amarectv capture

[DB83]

I'll leave the main analysis to those who know better than me but.....

Whether this is an issue with the codec, OBS or the card but chromo sub-sampling for NTSC should be 4:1:1. and not 4:2:0 which is PAL


Also the DAR appears to be 16:9 and VHS does not support that without letter-boxing.


Personally I would do another sample with AmarecTv or Vdub just to compare the output.

[dellsam34]

It's better and safer to use vdub or AmarecTV. Wrong settings on OBS can lead to problems that you may not notice right away until the capturing process is done and you will have to go back and recapture.

[boolian2]

It's better and safer to use vdub or AmarecTV. Wrong settings on OBS can lead to problems that you may not notice right away until the capturing process is done and you will have to go back and recapture.

yeah I just added amarectv capture

[lollo]

The architecture of the fields is weird in both captures.

Run a simple separateFields() and check by yourself

Proportions also looks weird

edit: 4:2:0 colorspace in obs capture is not appropriate, should be 4:2:2

edit 2 removed comment on field architecture, is classic 3:2 pulled-down, sorry for my mistake

[DB83]

^^ Any reason why you now used Lagarith instead of UT video ?
DAR is now corrected but you would have to resize to 4:3 to be absolutely correct (on reflection maybe the UT display was also 3:2)

[boolian2]

Ok I will switch to UT video and try that. Does it matter that the io data driver window says NTSC-M and not NTSC?

[DB83]

NTSC-M is correct.

[boolian2]

^^ Any reason why you now used Lagarith instead of UT video ?
DAR is now corrected but you would have to resize to 4:3 to be absolutely correct (on reflection maybe the UT display was also 3:2)

UT video capture:

[Sharc]

When you step through the frames you see the 3-2 telecine pattern: 3 clean - 2 combed - 3clean - 2combed ......
The files should be IVTCed (InVerse TeleCined) to restore progressive 23.976fps

assumeTFF()
TFM().Tdecimate()

[DB83]

Ok. I was fooled by the original cap. Both OBS and Amarec are displaying 3:2

But now Amarec shows 4:2:2 for sub-sampling which is a vast improvemnt on 4:2:0

[boolian2]

When you step through the frames you see the 3-2 telecine pattern: 3 clean - 2 combed - 3clean - 2combed ......
The files should be IVTCed (InVerse TeleCined) to restore progressive 23.976fps

assumeTFF()
TFM().Tdecimate()

Ok I just installed Avisynth I've never used it. Made an AVS file and when I open it in Virtualdub, it shows this error "AVI Import Filter error: (Unknown) (80040154)"

Anyone know how to fix that error

[Sharc]

You have to add the source filter

AviSource("Path to your source file.avi") #for reading the source file
assumeTFF()
TFM().Tdecimate()

[boolian2]

You have to add the source filter

AviSource("Path to your source file.avi") #for reading the source file
assumeTFF()
TFM().Tdecimate()

Yeah I did that

AviSource("C:\Users\*\Downloads\amarec(20220622-1632).avi")
assumeTFF()
TFM().Tdecimate()

[lollo]

if not placed in the appropriate AviSynth folder, load also the necessary DLLs

# plugins directory
plugins_dir="<your DLL directory>"

# TIVTC
loadPlugin(plugins_dir + "TIVTCv105\TIVTC\TIVTC.dll")

[lollo]

Yeah I did that

Try to open the avi file with FFmpegSource2("....")

[davexnet]

L-Smash-Works can open Lagarith and UT codec, download and put the LSMASHSource.dll in the plugins directory, 32 & 64 bits as appropriate
https://github.com/HolyWu/L-SMASH-Works/releases/

LWLIBAVVideosource("amarec(20220622-1556).avi")

[boolian2]

I've tried a few things none of them worked

# plugins directory
plugins_dir="C:\Program Files (x86)\AviSynth\plugins\"
# TIVTC
loadPlugin(plugins_dir + "TIVTC-v1.0.26\x64\TIVTC.dll")
#loadPlugin(plugins_dir + "LSMASHSource.dll")

# file name
file_name="C:\Users\u\Downloads\amarec(20220622-1632).avi"

#AviSource(file_name)
FFmpegSource2(file_name)
#LWLIBAVVideosource(file_name)

assumeTFF()
TFM().Tdecimate()

[davexnet]

Comment out the loadplugin line, proably a syntax error there somewhere.
It's not required when the dll is in the plugin folder, they're found automatically

[boolian2]

Comment out the loadplugin line, proably a syntax error there somewhere.
It's not required when the dll is in the plugin folder, they're found automatically

I just tried Version() and not even that is working. Still giving same error

update tried avisynth on another computer still not working. not working on windows 10 and 11. does avisynth require windows 7?

[davexnet]

Comment out the loadplugin line, proably a syntax error there somewhere.
It's not required when the dll is in the plugin folder, they're found automatically

I just tried Version() and not even that is working. Still giving same error

What, specifically, is your error ?

Try installing the latest Avisynth Plus version, which works fine in Windows 7 - 11
https://www.videohelp.com/download/AviSynthPlus_3.7.2_20220317_vcredist.exe

[boolian2]

Comment out the loadplugin line, proably a syntax error there somewhere.
It's not required when the dll is in the plugin folder, they're found automatically

I just tried Version() and not even that is working. Still giving same error

What, specifically, is your error ?

Try installing the latest Avisynth Plus version, which works fine in Windows 7 - 11
https://www.videohelp.com/download/AviSynthPlus_3.7.2_20220317_vcredist.exe

Sweet, Avisynth Plus is working. But it says there is no TFM function.

[boolian2]

Ok finally got it working but the file was over a gig so handbrake'd it:

[davexnet]

Ok finally got it working but the file was over a gig so handbrake'd it:

Sure. In vdub, unless you set video/compression, it defaults to uncompressed, which is massive as you saw.
If you use vdub2, it has x264, x265 and the excellent lossless FFV1 built in.

If you plan on making a DVD you can open the script directly in HCenc (or AVStoDVD), no need for an intermediate file.

Don't forget the file should play back as 4:3 aspect ratio, so you have to incororate it somewhere

[jagabo]

You may have a 32 bit vs. 64 bit issue. If you use a 32 bit editor you need 32 bit AviSynth Plus and 32 bit AviSynth filters. If you use a 64 bit editor you need 64 bit AviSynth Plus and 64 bit AviSynth filters. For filters to autoload you need to put them in the appropriate plugins folder. plugins+ for 32 bit, plugins64+ for 64 bit.

Note that 32 bit filters often come in a folder called x86, 64 bit filters in a folder called x64. The x86 name comes from the part numbers of the early Intel family processors: 8086, 80186, 80286, 80386, etc.

[ArcanaXIX]

When you step through the frames you see the 3-2 telecine pattern: 3 clean - 2 combed - 3clean - 2combed ......
The files should be IVTCed (InVerse TeleCined) to restore progressive 23.976fps

assumeTFF()
TFM().Tdecimate()

Am a newbie and this thread is full of useful info for me. I haven't used Avisynth yet, am I correct assuming it is a tool for post capture editing/processing? So far I have just played with virtualdub's basic deinterlacing/filters in post on some test captures, but I'd like to experiment with something more robust. Sounds like this is the next thing to start getting acquainted with.

[lollo]

am I correct assuming it is a tool for post capture editing/processing

Yes, welcome aboard!

If you want an example to setup a basic deinterlacing/denoise/sharpening script in AviSynth look here; it's only a starting point, but I hope it helps: http://www.digitalfaq.com/forum/video-capture/12805-first-video-capture.html#post85085

edit: but first of all you have to understand the nature of your video, to decide if you have to deinterlace, inverse telecine or whatever else. Have a look here: https://forum.videohelp.com/threads/406066-What-is-best-capture-device/page4#post2660663

[ArcanaXIX]

Fantastic thank you for those refs!

[jagabo]

You can also use AvsInfoTool to check your AviSynth installation. It shows whether filters loaded successfully or not and possible filter conflicts and duplicates.

[Alwyn]

Any reason why you now used Lagarith instead of UT video ?

What is the advantage of UT video over Lagarith?