Inserting an watermarked frame into a video

I have extracted one frame from a video and then performed some operation on that frame. Now I want to insert this frame into the video. But when I insert the frame, it's values are changed. But I want to insert the frame into the video without changing its values.How can this be done? I have use avi video format.

Answer 1

[Image Analyst]

Well, you're doing it incorrectly. What else can I say, given what you've provided us?

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Make sure you're putting back a frame of the same data type (RGB uint8).

Answer 2

[Walter Roberson]

When you create the VideoWriter object, you need to specify the profile as one of 'Uncompressed AVI', 'Indexed AVI', or 'Grayscale AVI'

https://www.mathworks.com/help/matlab/ref/videowriter.html

Note: when I tested using Uncompressed AVI, no codec information was stored; likewise when I let it use the default Motion JPEG (which is a lossy compression.)