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FFMPEG watermark video without re-encoding or loss of quality

I'm trying to watermark a video, but is there a way to do this without re-encoding the video for quality loss?

Im trying with a simple command:

ffmpeg -i input.flv -vf "movie=logo.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" output.flv
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2 answers

The answer is no, watermarks are designed to be combined into a video that is not easy to perfectly remove, so ffmpeg has to decode the original video, combine the original video with the watermark logo, and then transcode it to form a new video. clip.

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You can copy audio with -c: the copy remains unchanged. The video is different from the overlay, so you can configure the quality settings as described at https://trac.ffmpeg.org/wiki/Encode/H.264 .

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Source: https://habr.com/ru/post/981523/

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