109
© 2010 Martin Professional A/S
Maxedia 4
Audio Codecs
File extension
These are the supported 16-bit audio codecs. Please note that 24-bit is NOT supported.
MPEG1-Layer 3
.mp3
MPEG2 Audio
.m2a
MPEG4 Audio
.m4a
AAC, AC3, Vorbis, Integer *
*
Included in a Video Container
General Codec Settings
Resolution:
In general, it is advised to use standard video resolutions for optimum playback.
For SD resolutions: NTSC 720x480 pixels 30fr/sec, PAL 720x576 pixels 25fr/sec.
HD resolutions: 720P (1280x720) pixels, 1080P (1920x1080) pixels.
It is possible to play other resolutions settings, like often used for exact pixel match on LED screens
on stage. As long as the pixel size does not exceed 2048x1080 pixels.
Frames per second:
Default resolutions the DVI/VGA output are at 60Hz. For best playback results video files should be
encoded in 30 frames/sec. This way the frames are perfectly in sync with the output display. When
25 frames/sec encoded files are played on the Maxedia system, there are multiple options available
to frame-blend the image (default) or to playback at 30 frames (which give a slighter faster playback
speed with no audio). This to avoid visible vertical sync issues which are non-existing in Maxedia
Version 4.x software.
Progressive/Interlaced
Analog SD video is commonly distributed as interlaced video due to the old analog transmission
methods, by using odd and even frames. Computer displays always display full frames called
‘Progressive frames”. Playing Interlaced video on a computer always shows both the odd and even
frames. Fast moving objects will have the typical visible horizontal lines. Therefore it is strongly
advised to properly de-interlace the footage before encoding into H.264 for example. The best de-
interlace method is ‘adaptive de-interlacing’.
GOP:
For best results on playback for H.264, MP4 and MPEG files it is advised to use the GOP (Group of
Pictures) with I-frames only ‘Intra-encoding’ with no B or P frames. It is also called ‘Keyframes’ which
can be set per amount of frames. Set the amount Keyframes at ‘1’ which forces an I-frame only
encoding in your encoding package.
Data rate:
H.264/AVC, MPEG2/4, Divx, WMV formats can be set at VBR (Variable Bit Rate) or CBR (Constant
Bit Rate). Both options work to be able to play the files on the Maxedia. For best quality VBR is
preferred as more data can be stored per frame when needed, depending on the complexity of the
video frame. Like with fast motion pictures or panning of high contrast pictures. Constant Bit Rate is
commonly used for media that needs to be played-back on CD or DVD media. As the disc needs to
be read with a constant data rate to avoid changing in motor speeds due to data-rate changes.
Summary of Contents for Maxedia 4
Page 1: ... 2010 Martin Professional A S Maxedia 4 User Manual DRAFT VERSION ...
Page 17: ...10 2010 Martin Professional A S Maxedia 4 ...
Page 36: ...29 2010 Martin Professional A S Maxedia 4 ...
Page 127: ...120 2010 Martin Professional A S Maxedia 4 ...
Page 147: ...140 2010 Martin Professional A S Maxedia 4 ...
Page 151: ...144 2010 Martin Professional A S Maxedia 4 ...
Page 155: ...148 2010 Martin Professional A S Maxedia 4 System Network ...
Page 159: ...152 2010 Martin Professional A S Maxedia 4 Plugins ...