Comments

wwaag wrote on 1/30/2020, 3:30 PM

@Sirio

Could you upload a sample or provide a link that I could download for some testing of WEBM footage that has an alpha channel? Thanks.

Musicvid wrote on 1/30/2020, 4:07 PM

Why not use original files, the ones acquired by your camera? I mean, render to vp9 first and then reuse it...for Vegas Pro, this workflow is as not-pro as I can imagine. :)

Because most new hobbyists acquire their 4k footage from YouTube, nor do they own camcorders. It's a whole subculture of its own.

Download, Mashup, Upload.

adis-a3097 wrote on 1/30/2020, 5:08 PM

Why not use original files, the ones acquired by your camera? I mean, render to vp9 first and then reuse it...for Vegas Pro, this workflow is as not-pro as I can imagine. :)

Because most new hobbyists acquire their 4k footage from YouTube, nor do they own camcorders. It's a whole subculture of its own.

Download, Mashup, Upload.

Oh?! Now it makes perfect sense. 😂

 

wwaag wrote on 1/30/2020, 8:28 PM

Just a short note to confirm that ImportAssist can be modified to support import of WebM with alpha. If there is interest in adding this option, please let me know.

Sirio wrote on 1/31/2020, 3:05 AM

The webm don't come from a camera, it's a file generated by a computer graphic software. The modeller have a very low connection and we need the alpha channel in the video. Here a rough example.
Soon I will link the video file as asked by wwaag. Currently we are working with two files, one the video, another one the mask.

Sirio wrote on 1/31/2020, 3:24 AM

Just a short note to confirm that ImportAssist can be modified to support import of WebM with alpha. If there is interest in adding this option, please let me know.

Yes obviously! 😀

wwaag wrote on 1/31/2020, 8:20 PM

Here's a demo of its implementation in ImportAssist.

At the moment, no audio. If needed, that could be added. Since webm uses the Opus codec, it could be transcoded to either pcm or aac. From the demo, you can see that there are two steps. After the first step (lossless png creation), the user could import the image sequence directly into Vegas, thus avoiding the render to a lossless codec such as Apple Animation, MagicYUV or UtVideo.

 

Sirio wrote on 2/6/2020, 8:40 AM

Very interesting. There is 2 main steps, but HOS, make it simple.
When did you plan to release this version?

wwaag wrote on 2/6/2020, 10:45 AM

Actually, later today was the plan.

Sirio wrote on 2/14/2020, 11:22 AM

Happy Otter Scripts transform well a webm with alpha channel in order to import it in Vegas.
In case of, I found another solution:

  1. Open the file with the holly free VirtualDub2
  2. Export it (F7) in AVI with the free codec Lagarith
  3. Configure it in RGBA
  4. Pixel Format: RGBA32
  5. Export. Done.
Joelson_Forte wrote on 2/17/2020, 4:04 AM

@Sirio

The latest version of HOS can now import WebM files with alpha channel using AviDub with the lossless codec of your choice (Magic YUV, GrassValley HQX, Lagarith, UT, ProRes 4444), as long as it has alpha channel support. The HOS developer is doing a good job in this area of coding. Watch the video below.

Sirio wrote on 2/17/2020, 5:07 AM

Thank you, your way is faster!
It's strange that you select "webm vp9" and not "webm vp9 alpha". Anyway, it works.