Hello,
I am working with opencv and c++ to watermark a video but the problem is that when I write the video watermarked the watermark is damaged due to compression of codecs using during the writing phase of video. Are there any tools to work with uncompressed videos or to solve this problem?
Thank you very much
I think that you can use uncompressed avi. Under Linux you may have to compile ffmpeg from source in order to have the compression working properly (H.264). However it could be resolved with the last versions of opencv.
Thank you mr Guillaume
I am using the VideoWriter function with CV_FOURCC_PROMPT parameter but it gives me a video with a speed greater than the initial one and different from it in the term of size. I don't understand how can I create a video from an other one with the same properties
You should be able to get the FPS rate when you are opening the video with VideoCapture::get(CV_CAP_PROP_FPS). Then when constructing the VideoWriter object, you can specify these information. You have more tags containing the video information if needed.
As reference:
http://docs.opencv.org/modules/highgui/doc/reading_and_writing_images_and_video.html
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