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YUVIT

YUVIT is open source command line tool that can convert images into YUV sequences or streams. This tool has two major benefits: wide formats support for output yuv images and wide formats support for input images.

This tool was started in far 2005 and was released as any2yuv on Sourceforge in 2006. It was based on Corona open source imaging library which development has been stopped in far-far 2003. I didn't maintained any2yuv since it was released, therefore it missed functionality and some bugs. But in 2011 I got several requests and bug reports about this tool. After that was decided to rewrite this tool from scratch.

Meet the YUVIT for Mac, Windows and Linux. It's simply better then its predecessor. Now YUVIT uses FreeImage library, which provides support for tens image codecs like jpeg, tiff, png, pcx, bmp, gif and so on.

Usage

    yuvit [options] [-f format] [-s uvscale] <InFile> [OutFile]

    Options:
            -a : Add new image to the end of output file. Don't truncate output file.
            -m <start>:<end> : Multiple file input. Where:
                start : Sequence start
                end  : Sequence end
            -i : Interleave UV rows for planar formats
            -w : Swap UV components order

    Formats (-f option):
            yuv  : Planar format [DEFAULT]
            yuyv : Packed format
            uyvy : Packed format
            yyuv : Planar packed chroma format

    UV scales (-s option. Used only with -f and planar formats):
            h1v1 : UV not scaled down [DEFAULT]
            h2v2 : UV scaled down by 2x horizontally and vertically
            h2v1 : UV scaled down by 2x horizontally
            h1v2 : UV scaled down by 2x vertically

    Note: Use symbol '#' in file names for enumerators.

    Examples:
        yuvit -a -m 0:100 test###.bmp out.yuv
                Convert images from 'test000.bmp' to 'test100.bmp' into single 'out.yuv' file

        yuvit -m 10:200 test######.jpg out###.yuv
                Convert images 'test000010.jpg'...'test000200.jpg' into files 'out010.yuv'...'out200.yuv'

YUV Formats

Here are examples of how 4x4 pixels image can be stored in YUV format depending on options (not all possible cases are shown).

  1. -f yuv -s h1v1 [Default]

     YYYY
 YYYY
 UUUU
 UUUU
 VVVV
 VVVV

  2. -f yuv -s h2v1

     YYYY
 YYYY
 UU
 UU
 VV
 VV

  3. -f yuv -s h1v2

     YYYY
 YYYY
 UUUU
 VVVV

  4. -f yuv -s h2v1 -i

     YYYY
 YYYY
 UUVV
 UUVV

  5. -f yuyv

     YUYVYUYV
 YUYVYUYV

  6. -f uyvy

     UYVYUYVY
 UYVYUYVY

  7. -f yuyv -w

     YVYUYVYU
 YVYUYVYU

  8. -f yuv -s h2v1 -i -w

     YYYY
 YYYY
 VVUU
 VVUU

  9. -f yuv -s h1v1

     YYYY
 YYYY
 UVUV

Author

(c) 2005-2012 Alexander Shashkevych <alexander()stunpix.com>

License

YUVIT code is licensed under LGPL. Code of FreeImage and image codecs are distributed under their own licenses.