On Sun, 2005-11-20 at 11:31 -0500, Allen King wrote: > [Thu Nov 17 16:46:51 2005] [warn] lav2yuv +p IMGP0706.AVI | yuv2lav -o > IMGP0706.AVI [..] > * Here, the lav2yuv and yuv2lav are connected in one command > with a pipe. Below, they are executed in separate commands. > Behavior as a pipe or as separate seems to be identical. [..] > ----------- In the following, the files with "h" in there name were > produced by hand, executing the same command under the user name > apache at a bash prompt. The md5sum shows that the intermediate files > are the same, but the product of yuv2lav differs in content, but ls > shows that lengths are the same. > > bash-3.00$ md5sum /var/www/html/pics/051113/tt* IMGP0706*.AVI > 6eee2d8fc650969f5deae15ba217c61c /var/www/html/pics/051113/tt > 6eee2d8fc650969f5deae15ba217c61c /var/www/html/pics/051113/tth > f91693d1f5d7d662d646e04c64f450b4 IMGP0706.AVI > b99d4cc1f6cc86687f55ea3d8865ee80 IMGP0706h.AVI
How did you get the tt? Did you tee the output of the pipe into a file on its own? So here's my guess: you use a pipe in apache, and overwrite the original file while it is still in use. I have no idea what the consequence of that is on how the whole system operates, but I think it'll just read random data from the now-overwritten input file and use that as output, and then it doesn't work for some reason that I can't really figure out. I'd recommend using a different file as temporary intermediate and then rename it to the old file later on. There's nothing in there that would not make it run as Apache user. Cheers, Ronald ------------------------------------------------------- This SF.Net email is sponsored by the JBoss Inc. Get Certified Today Register for a JBoss Training Course. Free Certification Exam for All Training Attendees Through End of 2005. For more info visit: http://ads.osdn.com/?ad_id=7628&alloc_id=16845&op=click _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
