Hi there thanks for your replies. > yuvdenoise has some form of sharpening available with the -S > parameter, you might try that.
I did, and I believe that the unsharp mask is more efficient. From what I understand it is more or less a way or improving the ratio noise / signal. But I might be wrong on this one... > In general, the problem with > sharpening video is that it increases the high frequencies (edges) and > in doing so raises the noise level. See .... :-) I am wrong.... However, if the noise is increased how come that the picture looks better ? >This will most likely raise the bitrate, possibly substantially. > Dan To complete for Steven reply, I have not check out properly the bitrate and all of this. I needed a bit of room on my linux boxes and got rid of the files. So have to do it again. I know this is not smart .... >>���It'd better (and a lot faster) if the processing could be done >>���in the YUV (4:2:0) space and not take all the cpu cycles to >>���convert to/from RGB - but that's hard (image processing programs >>���such as the GIMP and most people think RGB rather than YUV). Yes... but again with my little knowledge, I understand it is based on geometry rather than anything else. So applying it to YUV or RGB space colour will not change anything. We are not in the "same space" are we ? >> Have you done some tests comparing the average bitrate reported >> by mplex between the before and after unsharp processing? Steven See above for my very poor excuse not having the data... I still believe it is worth doing it, can't we get rid of high frequency by using - N after ? Would it defeat the purpose ? Thanks again Edouard ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
