User`s manual

Alcorn McBride Digital Video Machine HD User’s Manual Rev 1.0
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VC-1 Video Specifications
The decoders within the DVMHD support advanced profile level 3 Microsoft VC-1
(WMV9) video. The following table summarizes the recommended encoding
parameters for creating VC-1 video that is compatible with the DVMHD:
Setting Values
Profile Advanced
Level 3
Max Bitrate* 8Mbps (8000kbps)
Resolutions 1080p** – 1920x1080
1080i – 1920x1080
720p – 1280x720
480p – 720x480
576p – 720x576
Framerates*** NTSC – 23.976fps, 29.97fps , 59.94fps
PAL – 24fps, 25fps, 50fps
Aspect Ratios 16:9 & 4:3
Chroma Format 4:2:0
* Both Constant (CBR) and Variable (VBR) bitrate are supported, so long as the
bitrate does not exceed the maximum.
** Although the DVMHD supports playback of 1080p24, 1080p25 and 1080p30 files, it
does not support playback of 1080p60 files.
*** The DVMHD will perform framerate conversions based on the Video Output format
for which it has been configured. However, in some cases this conversion is very
difficult and may result in unsatisfactory playback. For example, playing a 24fps file
on a 29.97fps output will work nicely. However, playing a 25fps (PAL) video on a
29.97fps(NTSC) output usually produces undesirable results. Keep this in mind when
configuring the DVMHD’s video output and encoding content.