time4tea/gopro-dashboard-overlay

Problem with transparency.

Closed this issue · 7 comments

chabapj commented

The only way I can get the transparent overlay, for use in e.g. DaVinci Resolve, is to encode it as png. Everything else comes with a black background. Am I doing something wrong? I tried various pixel formats. Using png is okay, but the files are huge.

victorlysak commented

qtrle ?
like in your ffmpeg-profiles.json would be:

{
    "map": {
      "input": ["-hwaccel", "auto"],
      "output": ["-r", "50", "-vcodec", "qtrle", "-pix_fmt", "argb"]
    }
}
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chabapj commented

Thanks - I never tried this codec. I will check it.

chabapj commented

It is ~50% of the PNG size. Thank you! The only thing that I do not understand is why the colours are changed while playing it in VLC. They look OK in Davinci, though.

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time4tea commented

This is amazing! Never heard of it! Thanks!

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victorlysak commented

I've never used vlc. Always and only mpv.
Vlc for me in Linux always nightmare to watch.

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chabapj commented

It looks great in mpv.

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time4tea commented

added to docs. thanks @victorlysak

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