Hello,
I am using OpenCV library to watermark a video but the problem is in the insertion step. I decompose the video into frames then i insert a mark in the frames and when i try to gather them to create a video using a codec the mark is lost because of compression. I try to use a lossless codec ( CV_FOURCC('I', 'Y', 'U', 'V') ) but i didn't find the one which is supported by OpenCV and Ubuntu 14.04.
Please if someone can help me ?
Thank you very much
Dear mam,
Apply MPEGE to add self created MPEG ‘watermark file’ while encoding. Or use MPEGE to watermark an already-compressed MPEG video - without changing the stream length. The versatile MPEGE GUI facilitates extraction , verification, insertion of a watermark.
Hi,
Use ffmpeg to convert the compressed video to rawvideo and then insert the watermark where ever you want like Y, U or V then create rawvideo file, finally compress rawvideo file using ffmpeg.
The ffmpeg is not supported by Ubuntu 14.04, so are there any other solution?
Thank you
There are several methods and algorithms. In MPEG you can embed in I frames.
There is a solution: we can get an uncompressed video from frames using this command
ffmpeg -i ./frame%d.png -vcodec png video.avi
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