png2yuv(1) | MJPEG tools manual | png2yuv(1) |
png2yuv - Convert PNG images to the YUV4MPEG stream format.
png2yuv [-b num] [-f num] [-I num] [-L num] [-n num] [-l num] [-j filename]
png2yuv decompresses a sequence of PNG files and pipes the image data to stdout as a YUV4MPEG2 stream. Any 8bit/pixel PNG format supported by libpng can be read. stdout will be filled with the YUV4MPEG movie data stream, so be prepared to pipe it on to mpeg2enc or to write it into a file.
This tool is incomplete. The alternative utility you are probably looking for is ppmtoy4m(1), which is also included in MJPEGtools.
png2yuv accepts the following options:
The frame rate description does not seem to be up to date. The NTSC integer ratios are not supported (use floating point instead). As workaround specify a PAL (25) or native FILM (24) and set the right frame rate in mpeg2enc with the -F option. Interlaced handling is not implemented yet.
This man page was written by Gernot Ziegler.
If you have questions, remarks, problems or you just want to contact the
developers, the main mailing list for the MJPEG-tools is:
mjpeg-users@lists.sourceforge.net
mjpegtools(1), mpeg2enc(1), ppmtoy4m(1), yuv2lav(1), yuvdenoise(1), yuvmedianfilter(1), yuvscaler(1)
2 February 2003 | MJPEG Tools Team |