Capturing VHS...29 or 59 fps?

[boolian2]

I'm using a Startech Composite/S-Video to HDMI converter and Avermedia HDMI capture card to capture VHS from my S-Video JVC VCR. The Startech converter automatically deinterlaces the video. Should I be capturing at 29 or 59.94 fps in OBS? Thanks

[dellsam34]

Wrong devices, wrong capture software. You should use a USB or a PCIe capture device or card and vdub or AmarecTV as a capture software.

[boolian2]

Wrong devices, wrong capture software. You should use a USB or a PCIe capture device or card and vdub or AmarecTV as a capture software.

Sorry I just got what I could afford.

[dellsam34]

With those combined you could have afforded a USB capture device.

[boolian2]

With those combined you could have afforded a USB capture device.

Which one?

[davexnet]

The best way to capture VHS is at it's native resolution (720x480 NTSC or 720x576 PAL), interlaced using a lossless codec.
Solutions involving VCR > HDMI > capture are usually disappointing

You should probably do some test captures using your setup and post some sample to the thread here

[boolian2]

The best way to capture VHS is at it's native resolution (720x480 NTSC or 720x576 PAL), interlaced using a lossless codec.
Solutions involving VCR > HDMI > capture are usually disappointing

You should probably do some test captures using your setup and post some sample to the thread here

I just captured at 29.97, 59.94, and 60fps. Should I also try 30fps? This is a NTSC VHS in NTSC VCR. I tried 720x480 but it was too wide (3:2). So I did 640x480 which matched the capture input (4:3). I'm probably missing something here. Thanks for any help.

[davexnet]

looks to me like the 59.94 is just repeated frames, but difficult to judge definitively because
the animation itself has repeated frames - live action would have been better

As it looks, I don't see any benefit to the higher frame rate. Perhaps others will comment

[boolian2]

looks to me like the 59.94 is just repeated frames, but difficult to judge definitively because
the animation itself has repeated frames - live action would have been better

As it looks, I don't see any benefit to the higher frame rate. Perhaps others will comment

Ok thanks that should reduce the file size too. Should I do 29.97 or 30 fps though?

[jagabo]

No, the 59.94 fps video captured every field of the source -- with poor deinterlacing. The 29.97 fps has a duplicate every 5th frame, also with poor deinterlacing. The former would definitely be smoother with true interlaced video (like from a camcorder). It would also be smoother with film sources (like these) -- it would have 3:2 judder but not a jerk every 1/5 second. Of course, either could be decimated back to the original 23.976 fps film frames (aside from the deinterlacing artifacts, VHS noise, etc.).

[jagabo]

If I had to live with these caps I would start with something like this with the 59.94 fps film caps (sample attached):

LWLibavVideoSource("640x480-59.94fps.avi") # get the source
Merge(last, Loop(2,0,0)) # blur consecutive frames together (to reduce shimmering from the poor deinterlacing)
SRestore(frate=23.976) # get rid of the blended frames leaving the original 23.976 fps film frames
QTGMC(InputType=2) # further clean up horizontal edges

With true interlaced video I'd just use QTGMC to reduce some of the shimmering edges:

LWLibavVideoSource("640x480-59.94fps.avi") 
QTGMC(InputType=2) # just clean up the deinterlace shimmering

The brights appear to be capped at Y=235 leaving some of them crushed. Check to see if you can adjust the capture devices to prevent those crushed brights.

[boolian2]

If I had to live with these caps I would start with something like this with the 59.94 fps film caps (sample attached):

LWLibavVideoSource("640x480-59.94fps.avi") # get the source
Merge(last, Loop(2,0,0)) # blur consecutive frames together (to reduce shimmering from the poor deinterlacing)
SRestore(frate=23.976) # get rid of the blended frames leaving the original 23.976 fps film frames
QTGMC(InputType=2) # further clean up horizontal edges

With true interlaced video I'd just use QTGMC to reduce some of the shimmering edges:

LWLibavVideoSource("640x480-59.94fps.avi") 
QTGMC(InputType=2) # just clean up the deinterlace shimmering

The brights appear to be capped at Y=235 leaving some of them crushed. Check to see if you can adjust the capture devices to prevent those crushed brights.

Wow! Your attachment looks a lot better. Less artifacts, smoother edges. Can I apply your (ffmpeg?) code in Handbrake? I've been using NVENC H265 preset when converting the AVI to MP4. Also, would this device be better for capturing?

https://www.amazon.com/gp/product/B0013LVK2C/

If not, which capture device would you suggest? My current S-Video to HDMI converter doesn't allow me to turn it's deinterlacing off. Maybe it would be better to capture it interlaced, and deinterlace on my computer instead.

[dellsam34]

Again, you just need a regular capture device, HDMI doesn't have to be involved especially when paying $249 for a TV scaler. I have the exact same model and that's what I use it for, scaling analog sources to TV.
A member is having a similar problem:
https://forum.videohelp.com/threads/406026-HDMI-USB-Capture-with-576i-%28uncompressed%29-support

[boolian2]

Again, you just need a regular capture device, HDMI doesn't have to be involved especially when paying $249 for a TV scaler. I have the exact same model and that's what I use it for, scaling analog sources to TV.
A member is having a similar problem:
https://forum.videohelp.com/threads/406026-HDMI-USB-Capture-with-576i-%28uncompressed%29-support

Will this work better? Elgato Video Capture - Digitize Video for Mac, PC or iPad (USB 2.0) https://a.co/d/1CywKcy

Do I need a TBC? I heard they are really expensive.

[dellsam34]

There are better capture devices than Elgato, Open a new thread with the right title and you will get help from members who use them.

[usually_quiet]

I just captured at 29.97, 59.94, and 60fps. Should I also try 30fps? This is a NTSC VHS in NTSC VCR. I tried 720x480 but it was too wide (3:2). So I did 640x480 which matched the capture input (4:3). I'm probably missing something here. Thanks for any help.

720x480 is standard for DVD video and SD Blu-ray video. Non-square pixels are used for video with 720x480 resolution when flagged to use a 4:3 display aspect ratio.

On the other hand, 640x480 uses square pixels when displayed at 4:3.

[boolian2]

I just captured at 29.97, 59.94, and 60fps. Should I also try 30fps? This is a NTSC VHS in NTSC VCR. I tried 720x480 but it was too wide (3:2). So I did 640x480 which matched the capture input (4:3). I'm probably missing something here. Thanks for any help.

720x480 is standard for DVD video and SD Blu-ray video. Non-square pixels are used for video with 720x480 resolution when flagged to use a 4:3 display aspect ratio.

On the other hand, 640x480 uses square pixels when displayed at 4:3.

I'm just watching the files, not putting them on disc

[ConsumerDV]

640x480 is perfectly fine if you don't want to bother with non-square pixels. A short video of mine may help.

[Eric-jan]

[Attachment 65486 - Click to enlarge]
your own decide ?