Is there any way of getting a thumbnail from user-uploaded video?

Anvil Q&A
6

In that case you have this exact code that works with the player. This will set the thumbnail to whatever the video is playing

from anvil.js.window import document

  def set_video_thumbnail_to_frame(self):
    
    canvas = document.createElement('canvas')
    ctx = canvas.getContext('2d')

    canvas.width = self.video_player_1.video_dom.videoWidth
    canvas.height = self.video_player_1.video_dom.videoHeight
    
    ctx.drawImage(self.video_player_1.video_dom, 0, 0, canvas.width, canvas.height)
    self.thumbnail.source = canvas.toDataURL('image/png')
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