问题
I have applied watermark on an image using c#. Now, I wanted to add a logo or watermark on the video using c#.
Can anybody suggest some ways to achieve this.
Any help would be greatly appreciable.
回答1:
If you are ok to use ffmpeg then you can add the overlay with ffmpeg using a command like this:
ffmpeg -i inputVideo.mp4 -i yourwatermark.png -filter_complex "overlay=5:5" -codec:a copy outputVideo.mp4
See this answer for more examples of placing the watermark - i.e. top left, bottom right etc: https://stackoverflow.com/a/10920872/334402
Using ffmpeg from many environments is often easiest done via a well supported wrapper library - this is speaking as someone who first used a homemade wrapper (in a different environment - not c#) but wished I had used a library!
However, c# does not seem to have a well supported ffmpeg wrapper, so it looks like you would need to execute the ffmpeg program yourself using a 'new Process()'. There is an example of this in this answer here: https://stackoverflow.com/a/7350411/334402
来源：https://stackoverflow.com/questions/49105004/applying-watermark-on-a-movie-video-in-c-sharp