SmoothVideo Project — Completely disable video crop in SVP 4

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Sun, 17 Jun 2018 19:50:48 +0000

Hey, that works! Thanks!

Re: Completely disable video crop in SVP 4

null@example.com (MAG79) — Sun, 17 Jun 2018 05:28:51 +0000

As I know some players such ZoomPlayer is not like picture size changing.
You can add Zoomplayer to special players list and disable picture resizing.
See SVP manual, section Blacklist of Players

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Fri, 15 Jun 2018 16:37:33 +0000

I'm using Zoom Player, and when trying to play a 854x480 video on it while running SVP the image is replaced by flashing lights and lines. I tried taking a screen cap, but apparently this issue is only visible while it's happening (no idea how or why). I have no other SVP-compatible players, so I couldn't recreate the issue on another player.

Regardless, if the 4px limit is there for system stability or whatnot, then I'll just keep turning SVP off when watching videos with frame widths not divisible by 4. No big deal.

Thanks anyway. Cheers.

Re: Completely disable video crop in SVP 4

null@example.com (Chainik) — Fri, 15 Jun 2018 16:16:06 +0000

I believe 2 px alignment will break some things not only in SVP but also in video players / renderers (madVR?)

> SVP breaks the playback of any video whose with isn't divisible by 4

How it breaks playback? I think it should just crop it to 4 px first.

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Fri, 15 Jun 2018 13:10:17 +0000

2? The problem is that SVP breaks the playback of any video whose with isn't divisible by 4. They're not very common, and it's no big deal if I have to disable SVP for those particular videos, but I figured I'd ask if there's a more direct solution.

Re: Completely disable video crop in SVP 4

null@example.com (Chainik) — Fri, 15 Jun 2018 12:31:21 +0000

> Why is the frame width alignment locked to either 4 or 8?

which value do you like more and why?

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Fri, 15 Jun 2018 12:15:31 +0000

Sorry for resurrecting this old thread, but I have a question. Why is the frame width alignment locked to either 4 or 8?

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Sun, 29 Nov 2015 19:28:46 +0000

Works great, thanks

Re: Completely disable video crop in SVP 4

null@example.com (Chainik) — Sun, 29 Nov 2015 17:40:43 +0000

ver. 4.0.0.53 - http://www.svp-team.com/forum/viewtopic.php?id=2986

frc.frame.align = 4

Re: Completely disable video crop in SVP 4

null@example.com (tac) — Fri, 27 Nov 2015 03:48:50 +0000

I found one more problem. That's about demonstration mode.
Function "demo()" causes size change when video width is not mod4.

e.g. 854x480 -> demo() -> 856x480

It's better to improve "demo()".

Current version. (not good)

function demo(clip src,clip smooth)
{
srcd = src.crop(0,0,-Int(src.width/4)*2-2,0)
srcd = srcd.ChangeFPS(FramerateNumerator(src)*5, FramerateDenominator(src)*2)
res = smooth.crop(Int(src.width/4)*2,0,0,0)
return StackHorizontal(srcd.Subtitle("Source", align=2),srcd.BlankClip(width=2),res.Subtitle("Smooth", align=2))
}

Example1: Line is on left area when video width is mod4.

function demo(clip src,clip smooth)
{
d = (src.width % 4 == 0) ? 2 : 0
cp=src.width/4*2+2
srcd = src.crop(0,0,-cp,0).ChangeFPS(smooth)
res = smooth.crop(cp-d,0,0,0)
return StackHorizontal(srcd.Subtitle("Source", align=2),srcd.BlankClip(width=2),res.Subtitle("Smooth", align=2))
}

Example2: Line is always on center. But line width is 4 when video width is mod4.

function demo(clip src,clip smooth)
{
lineW = (src.width % 4 == 0) ? 4 : 2
cp=(src.width+lineW)/4*2
srcd = src.crop(0,0,-cp,0).ChangeFPS(smooth)
res = smooth.crop(cp,0,0,0)
return StackHorizontal(srcd.Subtitle("Source", align=2),srcd.BlankClip(width=lineW),res.Subtitle("Smooth", align=2))
}

Re: Completely disable video crop in SVP 4

null@example.com (Nintendo Maniac 64) — Thu, 26 Nov 2015 21:12:15 +0000

Mystery wrote:

what about padding instead of cropping, to not lose any of the video?

I'm going to have to disagree with that for the following reason...

852x480 * 3 = 2556x1440
856x480 * 3 = 2568x1440

The latter would have to be instead scaled by 299% rather than an exact 300% on a 1440p monitor, thereby resulting in a resolution of 2560x1436

Also, consider that overscan is unfortunately still a thing in TVs, so it's very rare for even video game content to have critically-important information so close to the edge of the screen. But even then, we only talking about 2 pixels here, which in reality is actually 1 pixel on the left and 1 pixel on the right.

Re: Completely disable video crop in SVP 4

null@example.com (Mystery) — Thu, 26 Nov 2015 21:00:32 +0000

I think mod 4 is fine; but what about padding instead of cropping, to not lose any of the video?

Re: Completely disable video crop in SVP 4

null@example.com (tac) — Thu, 26 Nov 2015 16:52:46 +0000

And I found problem about 3D stereo mode in SVP4 Free.

1. playback 854x480 movie. (854 is not mod4)
-> global crop_string="crop(2,0,-4,-0)"
2. Choose "3D side-by-side stereo pair"
-> global crop_string="crop(0,0,-2,-0)"
-> AVS error
Crop: YUV image can only be cropped by Mod 2 (right side)

In SVP3, 3D mode options are displayed in a grayout state when video is not "mod4".

Re: Completely disable video crop in SVP 4

null@example.com (tac) — Thu, 26 Nov 2015 16:51:33 +0000

"mod4" causes cropping(resizing) such as 854x480->852x480, 1366x768->1364x768, etc.
So I'll set that parameter value to 2.

For reference, please let me know the reason why SVP4 recommends "mod4".

You said,

*Cause video width should be divisible by 8 to be compatible with SVP GPU-accelerated processing.
*The question is video width must be divisible by 8 to pass SVP w/o issues. And not only SVP but some video renderers too.

but "mod2" seems to work fine.
And performance of "mod2(1366x768)" is equal to "mod8(1360x768)". (by AVSMeter)

Of course, "3D stereo mode" needs "mod4".
But I think "default value = 2 (mod2)" is better, and force "mod4" when "3D stereo mode" only.

I think many of users maybe want to avoid cropping(resizing) as much as possible.

Re: Completely disable video crop in SVP 4

null@example.com (Trilandian) — Wed, 25 Nov 2015 15:05:03 +0000

Awesome, thanks