📝⚙️ (Script) Enable alpha channel. @jetdv HELP ME!

m3lquixd wrote on 2/18/2023, 10:27 AM

I find it too time consuming to execute: Right click on a media>Properties>Media>Alpha Channel and select Premultiplied.
[[MENTION:72365]] Could you make a script to turn selected media on the timeline into alpha channel premultiplied. So I can set a keyboard shortcut for that. Please! Thank you very much in advance!
Ps. I know that there is already a script from The Happy Otter that opens a window to set the alpha channel, but I still have to select which mode I want. And I wanted one that always set Premultiplied.

Comments

m3lquixd wrote on 2/18/2023, 10:29 AM

@jetdv I posted publicly and not directly in private, because someone might be interested in that too.

juan_rios wrote on 2/18/2023, 12:05 PM

Yes. Myself. And with the kindness of Mr. Troxel, an independent one for "Straight" and "Dirty" would not be bad.

jetdv wrote on 2/18/2023, 12:43 PM

Please see this one:

m3lquixd wrote on 2/18/2023, 12:51 PM

@jetdv I don't really understand scripting, if you could create it for us I would be grateful.

wwaag wrote on 2/18/2023, 12:53 PM

@m3lquixd

There's a tool in the HOS Free Tools Library that enables you to set alpha for selected events. Here's a screengrab.

And a link to the library where it can be downloaded. https://tools4vegas.com/library/

m3lquixd wrote on 2/18/2023, 12:58 PM

Ps. I know that there is already a script from The Happy Otter that opens a window to set the alpha channel, but I still have to select which mode I want. And I wanted one that always set Premultiplied.

@wwaag Yes I know. I quoted her. But thanks.

m3lquixd wrote on 2/18/2023, 12:59 PM

@wwaag btw, I currently use it.

wwaag wrote on 2/18/2023, 1:01 PM

@m3lquixd

Sorry. I didn't read your request carefully.

jetdv wrote on 2/18/2023, 2:55 PM

using System;
using System.Collections.Generic;
using System.Collections;
using System.IO;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.Drawing;
using System.Runtime;
using System.Xml;
using ScriptPortal.Vegas;

namespace Test_Script
{
    public class Class1
    {
        public Vegas myVegas;

        public void Main(Vegas vegas)
        {
            myVegas = vegas;

            foreach(Track myTrack in myVegas.Project.Tracks)
            {
                if (myTrack.IsVideo())
                {
                    foreach(TrackEvent evnt in myTrack.Events)
                    {
                        if (evnt.Selected)
                        {
                            VideoEvent vEvent = (VideoEvent)evnt;
                            VideoStream vs = (VideoStream)vEvent.ActiveTake.Media.Streams.GetItemByMediaType(MediaType.Video, vEvent.ActiveTake.StreamIndex);
                            vs.AlphaChannel = VideoAlphaType.Premultiplied;
                        }
                    }
                }
            }
        }
    }
}

public class EntryPoint
{
    public void FromVegas(Vegas vegas)
    {
        Test_Script.Class1 test = new Test_Script.Class1();
        test.Main(vegas);
    }
}

Ok, this one will look through all tracks. Then, if it's a video track, it will look through all events. Then, if the video event is selected, it will convert the track event to a video event, find the video stream, and change the AlphaChannel property of the stream to "Premultiplied".

m3lquixd wrote on 2/18/2023, 8:32 PM

Thank you very much, @jetdv!

juan_rios wrote on 2/19/2023, 8:37 AM

Thank you! Working here.

juan_rios wrote on 2/19/2023, 8:44 AM

And please jetdv, would it be possible to modify for Straight (unmatted) and Premultiplied (dirty)? Depending on the source, some clips work better with one of these. It would be a great favor.

m3lquixd wrote on 2/19/2023, 9:14 AM

                            vs.AlphaChannel = VideoAlphaType.Premultiplied;

@juan_rios I think it's just a matter of modifying this part of the script, I don't understand it very well, but I'll try here

m3lquixd wrote on 2/19/2023, 9:20 AM

Thank you! Working here.

@juan_rios I find it very practical to define a shortcut with the keyboard, this script will help me a lot.
Thanks again @jetdv

m3lquixd wrote on 2/19/2023, 9:33 AM

                            vs.AlphaChannel = VideoAlphaType.Premultiplied;
@juan_rios I think it's just a matter of modifying this part of the script, I don't understand it very well, but I'll try here

@juan_rios I couldn't do it lol
I don't know what the command is for Straight (unmatted) and Premultiplied (dirty).
I don't know how vegas identifies this internally.

juan_rios wrote on 2/19/2023, 10:32 AM

Thanks m3lquixd; I already tried that but it didn't work either. That's why Mr. Troxel's magic is needed.😀

jetdv wrote on 2/19/2023, 1:57 PM

Just pick the one you want to use:

                            vs.AlphaChannel = VideoAlphaType.Premultiplied;
                            vs.AlphaChannel = VideoAlphaType.PremultipliedDirty;
                            vs.AlphaChannel = VideoAlphaType.Straight;
                            vs.AlphaChannel = VideoAlphaType.None;

m3lquixd wrote on 2/19/2023, 3:21 PM

Just pick the one you want to use:

                            vs.AlphaChannel = VideoAlphaType.Premultiplied;
                            vs.AlphaChannel = VideoAlphaType.PremultipliedDirty;
                            vs.AlphaChannel = VideoAlphaType.Straight;
                            vs.AlphaChannel = VideoAlphaType.None;

Tested and approved!

juan_rios wrote on 2/19/2023, 3:57 PM

Fantastic jetdv . Thank you!

Steve_Rhoden wrote on 11/5/2023, 9:18 PM

Is it possible were this script can be modified to toggle thru all of the Alpha channel options? "Premultiplied, Straight" etc.

m3lquixd wrote on 11/5/2023, 9:40 PM

@Steve_Rhoden Yes! See my last message in this post.

Steve_Rhoden wrote on 11/6/2023, 6:38 AM

@m3lquixd No, not that..... What i meant by toggling, is that each time you click on the script, it moves to the next alpha channel option. eg: { "press once the channel goes to Premultiplied, press again it goes to straight" } etc.

jetdv wrote on 11/6/2023, 8:23 AM

Yes, that is possible. You just need to read which one it's currently set to and then set it to the next one. Take a look at this tutorial which "rotates" the video counter-clockwise to the next position each time. You would do the same thing except go through the four different alpha modes.

m3lquixd wrote on 11/6/2023, 1:35 PM

@Steve_Rhoden I liked it, it's a really good idea!
It would be cool for you to do that @jetdv.