MJPEG Tools Svn

sub44_sad patch from Scott Smith.
Begin adding MJPEGTOOLS_SIMD_DISABLE environment variable support. The environ
variable is a comma separated list of routine names that should use the C code
instead of the SIMD (MMX/SSE/Altivec) code. At the present time only the
support function, the helper program (mjpeg_simd_helper) and 1 of the motion
routine checks has been completed. The remainder (and the quantization/dct
rountes) will be done as time permits.

improved portability for PowerPC64 architecture on Linux

another patch from: Nicolas Boos <nicolas.boos@...>

Here is the changelog :

* The output files prefix can be specified, default is "out".
* Added "ntsc_film" possible output framerate.
* Now the input framerate can be forced.
* Pulldown flag is set for mpeg2 based profiles when needed.
* Scaling is now automatically disabled when not useful
(the -d flag is no more available).

fixed color artefacts on top and bottom of the frame...

Submitted the patch from:
Nicolas Boos

Subject: [Mjpeg-developer] [PATCH] anytovcd.sh update

Changelog :

* Pixel aspect ratio of the input can be forced.
* Per user request, added a new "mvcd" profile (non-standard).
* Now the cubicCR resize kernel is the default for all profiles.
* Fixed cvd frame size problem with the ffmpeg encoder.
* Fixed decoding with recent ffmpeg versions.

Recent experience shows that "-m 10 -M 3" produces much higher-quality
output than the old defaults. So those are the defaults now.

Speed up patch submitted by Scott Smith (Stefan Fendt was short on free time and
asked that I check the change in for him).

Some changes and fixes.
Added some book to the doku.

MMX/SSE speed enhancement and cleanup contributed by scott at gelatinous dot com

Would make sense to be consistent and use the variable set with the (correct)
limit instead of a hardwired constant.