>Any suggestions on how to fix this would be greatly appreciated. >Went to use DVDStyler last week and got hit with the below: ... > INFO: [ppmtoy4m] chroma subsampling: 4:4:4 (no subsampling) > INFO: [ppmtoy4m] Output Stream parameters: > INFO: [ppmtoy4m] frame size: 720x480 pixels (1036800 bytes) > INFO: [ppmtoy4m] chroma: 4:4:4 (no subsampling) ... >Error executing of command: jpegtopnm "/usr/tmp/menu1-0.mpg_bg.jpg" | >ppmtoy4m >-n 1 -I t -L -F30000:1001 -A 10:11 | mpeg2enc -f 8 -b 9000 -o >"/usr/tmp/menu1-0.mpg_bg.m2v" --video-norm n --frame-rate 4
In v1.8+, ppmtoy4m produces a 4:4:4 stream by default, since this involves the minimal amount of processing and since its internal subsampling algorithm is not very good. mpeg2enc, however, wants some form of 4:2:0 input. So, either something like y4mscaler needs to be used between the two to do good subsampling, or the "-S" option (with a suitable parameter) needs to be supplied to ppmtoy4m to do mediocre subsampling. -matt m. ------------------------------------------------------- SF.Net email is sponsored by: Tame your development challenges with Apache's Geronimo App Server. Download it for free - -and be entered to win a 42" plasma tv or your very own Sony(tm)PSP. Click here to play: http://sourceforge.net/geronimo.php _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
