ChamSys
MagicHD User Manual
Version 1.6.5.0
1.2 Known Problems
Known major problems with MagicHD:
•
Playback of multiple layers of some HD media content types can be jerky or slow the
system down: load management is not yet implemented (whereby lower layers will skip
frames to ensure the correct frame rate is maintained).
•
Text layer is rendered at a fixed point size so text is blocky when a small number of lines
fills the screen.
•
Aspect ratio appears to change when objects are rotated.
•
With Windows 8 MagicHD must be run as administrator for media conversion to work.
•
Some content encoded with the jpeg2000 codec causes ffmpeg (the tool used to convert
media) to crash. If this happens the user will have to convert the media offline with a
different tool.
1.3 Changes
Changes to DMX personalities are described in Appendix A . These are changes that might break
shows based on older versions.
1.4 References
[1]
http://www.chamsys.co.uk/magichd
[2]
http://en.wikipedia.org/wiki/Video_compression_picture_types
[3]
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC
[4]
http://en.wikipedia.org/wiki/HSL_and_HSV
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