(fast ?) Rotation plugin

[Reel.Deel]

Thanks for the update StainlessS!

[Rob105]

https://i.postimg.cc/pTxrDM1p/Rot-00.jpg
When overlaying one video over another video background color is very undesirable.

Here is example attached, orange box is a video i am rotating, over teal background, of course i can set a background color to teal as well to have no visible background. But that trick will not work when overlaying video over another video.

Could you please add option to make background transparent as opposed to black or any other color, e.g. adjustable background opacity option?

https://forum.doom9.org/attachment.php?attachmentid=18496&d=1698601922

[Reel.Deel]

When overlaying one video over another video background color is very undesirable.

Here is example attached, orange box is a video i am rotating, over teal background, of course i can set a background color to teal as well to have no visible background. But that trick will not work when overlaying video over another video.

Could you please add option to make background transparent as opposed to black or any other color, e.g. adjustable background opacity option?

https://forum.doom9.org/attachment.php?attachmentid=18496&d=1698601922

You need to add a fully white mask:

# For RGB
a = ColorBars(width=320, height=240)
b = Version(pixel_type="RGB32").AddAlphaPlane(255).Rotate(33)
c = b.ExtractA()

Overlay(a, b, mask=c)

# For YUV
a = ColorBars(width=320, height=240, pixel_type="YUV420P8")
b = Version(pixel_type="YUV420P8").Rotate(33)
c = BlankClip(b, pixel_type="Y8", colors=[255]).Rotate(33).ColorYUV(levels="TV->PC")

Overlay(a, b, mask=c)

Note that if the mask is fully static, it will be faster to process just one frame.

https://i.ibb.co/mhdgdP5/rotate.png

[Rob105]

Thanks works great.

Note that if the mask is fully static, it will be faster to process just one frame.
What exactly do you mean by that?

[Reel.Deel]

Thanks works great.

What exactly do you mean by that?

If angle and endangle are the same it means that the rotation is static (does not change over time). So in that case it will be faster to process just one frame for the mask, like so:

# For YUV
a = ColorBars(width=320, height=240, pixel_type="YUV420P8")
b = Version(pixel_type="YUV420P8").Rotate(33)
c = BlankClip(b, pixel_type="Y8", colors=[255], length=1).Rotate(33).ColorYUV(levels="TV->PC")

Overlay(a, b, mask=c)

For RGB, it would also be done this way.