Dear ffmpeg users,
I'm working on an image analysis project and I need to convert an .avi movie into a series of frames. I know I can do this with the following command: ffmpeg -i inmovie.avi ./somedirectory/picture%d.jpg Works well. No problem. Now, I actually only need the red channel of my images for downstream analysis, and I want the images to be as small as possible without losing resolution (for downstream analysis speed). This is where my knowledge about image and movie formats becomes a bit wobbly. Is there a way I can let ffmpeg output files that are essentially just a matrix of red values in 8 bit encoding? I guess the answer lies in some kind of color-to-greyscale conversion where the single channel in grayscale is just a copy of the red channel of the original frame. Any suggestions for ffmpeg code that would do this at once? Many thanks! Rik _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
