问题
I am working on a video processing project and using ffmpeg for watermarking. I achieve exactly what i want but the problem is that the process is very very slow.
I am using a Intel Smart 2nd gen family Core-i5 Processor with 4GB RAM on a 32 bit operating system Microsoft Windows-8 on a 64-bit CPU.
I tried watermarking a video [mp4] of length 1:30 Min. size of file is 1.5GB
Whole process accomplish in 3 Hrs to watermark my video file and what i noticed while process is that ffmpeg was processing 28 frames per sec first and then later it slow down up to 20 frames per second. a normal human watch video with frame rate of 30 frame per second and process was even slower then this that's why it took more time [3 Hrs] then the actual length of video itself [1:33]
What i think to make process efficient is to use ffmpeg Watermarking Source Code and modify it somewhat...
I want to ask if someone have achieve fast watermarking before by any other way or have modified this code to achieve faster process in order to save my time...
回答1:
To speed up you might try to skip middle frames like apply watermark on next 5th frame if that number dont create flickr
来源：https://stackoverflow.com/questions/16907050/ffmpeg-watermarking-processing-is-very-slow