Fix export video. This broke due to the move to the file system access API. Although I think it was already broken before this change.
Ideal workflow is that export video becomes file system access API powered too. But this is tricky because currently we run ffmpeg in the main process.
Configure the ffmpeg cli to stream video data from the main process to the render process (or move video export to the preload/some separate process from renderer). And then put this stream into a file handle added via the file system access API.
Fix export video. This broke due to the move to the file system access API. Although I think it was already broken before this change.
Ideal workflow is that export video becomes file system access API powered too. But this is tricky because currently we run ffmpeg in the main process.