Re: [Mjpeg-users] more - splitting an MJPEG to a series of JPEGs
On 09/10/2005, at 2:43 PM, Bernhard Praschinger wrote: AnY good way to batCh process this on the CLI besides a for loop and ppntojpeg? I would use convert this way: for i in *.pnm; do convert $i `basename $i pnm`jpg; done convert can do the conversation to nearly every picture format. Convert is a part of the imagemagick package. It needs to be installed first. My personal favourite for converting to JPEG from PPM is to use the jpeg utilities themselves, they are installed when you install the jpeg libraries. The tool is called cjpeg and you can specify the quality and type of jpeg (progressive, optimised etc) Typical usage might be: cjpeg -qual 95 -opt foo.ppm > foo.jpg It has heaps of other options for advanced jpeg users, check out the man page. Mark --- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
[Mjpeg-users] Film studio standard image format.
I know this has little bearing here, but I've been trying to find out this standard and now have reasonably reliable sources to quote. The colour depths commonly used include 16 and 32 bit int or floating point values, per channel! Rhythm & Hues, developers of CinePaint use 16bit int * 4 channels. Whereas ILM, developers of OpenEXR use 16bit float * an arbitrary number of channels. Also, quoting ILM, the typical scan resolusion used by studios is 2K wide. Actual image size is 1920x1080 pixels. So, it would seem that the typical movie studio images are 64bit colour, [EMAIL PROTECTED] at 1920X1080. This seems to indicate the resolution I want to be rendering my images. PNG offers these colour depths and POV-Ray can render to PNG, just not sure it can run at 64bit. --- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl ___ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
