[Question] How could I embed the drawing (rasterizing?) into some video stream? about graphx

[ryuujo1573]

I'll try for that.
Thank you ❤️

[roipeker]

Hi @ryuujo1573 . If you mean capturing a video from a Widget, like screen recorder, you should see if you can find a package in pub.dev
I think Flutter processing has an option to export gifs. Graphx has nothing on the subject.

Did I answered your question?

[ryuujo1573]

I've found this “Video Editor in Flutter using dart”, which is the similar case.

Maybe I was wondering how could I harness graphx abilities to make some awesome effects in producing video (or live-stream)...
and seemingly this "Render Flutter animation directly to video" may be the clue to embed the drawing into videos.

Thank you.

[roipeker]

sorry the misunderstanding.
You can rasterize any DisplayObject with createImage() (outputs a dart.ui.Image) might be cpu intensive... the callback is async though, so I guess you can have a flag on stage.onEnterFrame to capture the stage for a period of time and save the images in a List, then output every image separately as frame1.png, frame2.png etc then use ffmpeg to join them as video/gif... i doubt u can get 60fps though in this process... and probably will need some fine tuning, but might work.

[ryuujo1573]

Is it possible to access Skia so as to draw into the buffer using GPU? (or any APU by some authentic SDK from manufacturers)
I found nothing on how to do this, or maybe I could make a fork to Flutter and mess with bunches of code?
Appreciations, Zhang.

[roipeker]

I think you have to recompile the flutter engine with the exposed backend from Skia that you need. That's beyond my knowledge though.

[ryuujo1573]

flutter/flutter#99593
Initiated!
Any advise?