Transcoder formats syntax

[maxpower]

I am trying to tweak one of the profiles that SageTV uses to compress videos. I can't find any documentation that explains what the syntax is and what the different switches represent. Can someone point me to some documentation or take the time to give a brief primer on this?

These are the entries in the sage.properties file that I am talking about:

transcoder/formats/AppleTV-High\ Quality=f\=mp4;MCompressionDetails\=-deinterlace -g 150 -qmin 25 -level 31 -loop 1 -sc_threshold 40 -partp4x4 1 -rc_eq blurCplx^(1-qComp) -refs 2 -qmax 51 -maxrate 4500000 -bf 1 -keyint_min 40;[bf\=vid;f\=h264;br\=2500000;fps\=29.97;w\=720;h\=480;arn\=4;ard\=3;][bf\=aud;f\=aac;sr\=48000;ch\=2;br\=128000;]
transcoder/formats/AppleTV-High\ Quality\ Widescreen=f\=mp4;MCompressionDetails\=-deinterlace -g 150 -qmin 25 -level 31 -loop 1 -sc_threshold 40 -partp4x4 1 -rc_eq blurCplx^(1-qComp) -refs 2 -qmax 51 -maxrate 4500000 -bf 1 -keyint_min 40;[bf\=vid;f\=h264;br\=2500000;fps\=29.97;w\=960;h\=540;arn\=16;ard\=9;][bf\=aud;f\=aac;sr\=48000;ch\=2;br\=128000;]
transcoder/formats/DVD-Extra\ Long\ Play=f\=dvd;[bf\=vid;f\=mpeg2video;br\=3000000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=mp2;sr\=48000;ch\=2;bsmp\=16;br\=384000;]
transcoder/formats/DVD-Extra\ Long\ Play\ with\ AC3=f\=dvd;[bf\=vid;f\=mpeg2video;br\=3000000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=ac3;sr\=48000;bsmp\=16;br\=384000;]
transcoder/formats/DVD-Long\ Play=f\=dvd;[bf\=vid;f\=mpeg2video;br\=4800000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=mp2;sr\=48000;ch\=2;bsmp\=16;br\=384000;]
transcoder/formats/DVD-Long\ Play\ with\ AC3=f\=dvd;[bf\=vid;f\=mpeg2video;br\=4800000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=ac3;sr\=48000;bsmp\=16;br\=384000;]
transcoder/formats/DVD-Standard\ Play=f\=dvd;[bf\=vid;f\=mpeg2video;br\=6400000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=mp2;sr\=48000;ch\=2;bsmp\=16;br\=384000;]
transcoder/formats/DVD-Standard\ Play\ with\ AC3=f\=dvd;[bf\=vid;f\=mpeg2video;br\=6400000;fps\=29.97;w\=720;h\=480;vbr\=1;][bf\=aud;f\=ac3;sr\=48000;bsmp\=16;br\=384000;]
transcoder/formats/MPEG4\ HDTV-Good\ Quality\ AVI=f\=avi;MCompressionDetails\=-vtag xvid;[bf\=vid;f\=mpeg4;br\=6000000;][bf\=aud;]
transcoder/formats/MPEG4\ HDTV-Good\ Quality\ Deinterlaced\ AVI=f\=avi;MCompressionDetails\=-vtag xvid -deinterlace;[bf\=vid;f\=mpeg4;br\=6000000;][bf\=aud;]
transcoder/formats/MPEG4\ HDTV-High\ Quality\ AVI=f\=avi;MCompressionDetails\=-vtag xvid;[bf\=vid;f\=mpeg4;br\=8000000;][bf\=aud;]
transcoder/formats/MPEG4\ HDTV-High\ Quality\ Deinterlaced\ AVI=f\=avi;MCompressionDetails\=-vtag xvid -deinterlace;[bf\=vid;f\=mpeg4;br\=8000000;][bf\=aud;]
transcoder/formats/MPEG4-Good\ Quality\ AVI=f\=avi;MCompressionDetails\=-vtag xvid;[bf\=vid;f\=mpeg4;br\=1500000;w\=720;h\=480;fps\=29.97;][bf\=aud;]
transcoder/formats/MPEG4-Good\ Quality\ Deinterlaced\ AVI=f\=avi;MCompressionDetails\=-vtag xvid -deinterlace;[bf\=vid;f\=mpeg4;br\=1500000;w\=720;h\=480;fps\=29.97;][bf\=aud;]
transcoder/formats/MPEG4-High\ Quality\ AVI=f\=avi;MCompressionDetails\=-vtag xvid;[bf\=vid;f\=mpeg4;br\=2000000;w\=720;h\=480;fps\=29.97;][bf\=aud;]
transcoder/formats/MPEG4-High\ Quality\ Deinterlaced\ AVI=f\=avi;MCompressionDetails\=-vtag xvid -deinterlace;[bf\=vid;f\=mpeg4;br\=2000000;w\=720;h\=480;fps\=29.97;][bf\=aud;]
transcoder/formats/PSP-Good\ Quality=f\=psp;MCompressionDetails\=-bitexact 1[bf\=vid;f\=xvid;br\=216000;fps\=29.97;w\=320;h\=240;][bf\=aud;f\=aac;sr\=24000;ch\=1;br\=48000;]
transcoder/formats/PSP-High\ Quality=f\=psp;MCompressionDetails\=-bitexact 1[bf\=vid;f\=xvid;br\=768000;fps\=29.97;w\=320;h\=240;][bf\=aud;f\=aac;sr\=24000;ch\=2;br\=128000;]
transcoder/formats/PSP-Widescreen\ Good\ Quality=f\=psp;MCompressionDetails\=-bitexact 1[bf\=vid;f\=xvid;br\=216000;fps\=29.97;w\=368;h\=208;][bf\=aud;f\=aac;sr\=24000;ch\=1;br\=48000;]
transcoder/formats/PSP-Widescreen\ High\ Quality=f\=psp;MCompressionDetails\=-bitexact 1[bf\=vid;f\=xvid;br\=768000;fps\=29.97;w\=368;h\=208;][bf\=aud;f\=aac;sr\=24000;ch\=2;br\=128000;]
transcoder/formats/Razr-Fair\ Quality=f\=3gp;[bf\=vid;f\=mpeg4;br\=80000;fps\=29.97;w\=176;h\=144;][bf\=aud;f\=amr_nb;sr\=8000;ch\=1;bsmp\=8;br\=7950;]
transcoder/formats/Razr-Good\ Quality=f\=3gp;[bf\=vid;f\=mpeg4;br\=120000;fps\=29.97;w\=176;h\=144;][bf\=aud;f\=amr_nb;sr\=8000;ch\=1;bsmp\=8;br\=7950;]
transcoder/formats/Razr-High\ Quality=f\=3gp;[bf\=vid;f\=mpeg4;br\=172000;fps\=29.97;w\=176;h\=144;][bf\=aud;f\=amr_nb;sr\=8000;ch\=1;bsmp\=8;br\=7950;]
transcoder/formats/Zune-Standard=f\=wmv;MCompressionDetails\=-deinterlace -pix_fmt yuv420p -g 15 -qmin 3 -maxrate 628000 -bufsize 628k -async 50;[bf\=vid;f\=wmv2;br\=500000;fps\=29.97;w\=320;h\=240;arn\=4;ard\=3;][bf\=aud;f\=wmav2;sr\=48000;ch\=2;br\=128000;]
transcoder/formats/Zune-Widescreen=f\=wmv;MCompressionDetails\=-deinterlace -pix_fmt yuv420p -g 15 -qmin 3 -maxrate 628000 -bufsize 628k -async 50;[bf\=vid;f\=wmv2;br\=500000;fps\=29.97;w\=320;h\=180;arn\=4;ard\=3;][bf\=aud;f\=wmav2;sr\=48000;ch\=2;br\=128000;]
transcoder/formats/iPod-Fair\ Quality=f\=mp4;MCompressionDetails\=-bufsize 33554432 -g 300;[bf\=vid;f\=mpeg4;br\=500000;fps\=29.97;w\=512;h\=384;arn\=4;ard\=3;][bf\=aud;f\=aac;sr\=44100;ch\=2;br\=64000;]
transcoder/formats/iPod-Good\ Quality=f\=mp4;MCompressionDetails\=-maxrate 1250000 -bufsize 33554432 -g 300;[bf\=vid;f\=mpeg4;br\=1000000;fps\=29.97;w\=512;h\=384;arn\=4;ard\=3;][bf\=aud;f\=aac;sr\=44100;ch\=2;br\=96000;]
transcoder/formats/iPod-High\ Quality=f\=mp4;MCompressionDetails\=-maxrate 2500000 -qmin 3 -qmax 5 -bufsize 33554432 -g 300;[bf\=vid;f\=mpeg4;br\=1800000;fps\=29.97;w\=512;h\=384;arn\=4;ard\=3;][bf\=aud;f\=aac;sr\=44100;ch\=2;br\=128000;]

[tmiranda]

I'm also looking for this. I want to create a new profile for a Sansa e200. The Sansa supports M-JPEG video and wav audio. Where can I find some documentation on the syntax?