User`s manual

Alcorn McBride Digital Video Machine HD User’s Manual Rev 1.0
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H.264/MPEG-4 Video Specifications
The decoder within the DVMHD supports level 4.1 high profile H.264 video, also
known as MPEG-4 part 10 or AVC. The table below summarizes the encoding
parameters necessary for creating H.264 video that is compatible with the DVMHD.
Keep in mind that H.264 video can be encoded for the DVMHD in one of two different
forms. You can encode it as an H.264 Video Elementary Stream (like
VID00001.H264), or you can encode it within an MPEG Transport Stream (like
VID00001.MPG).
Setting Values
Profile High
Level 4.1
Max Bitrate* 30Mbps (30000kbps)
Resolutions 1080p** – 1920x1080
1080i – 1920x1080
720p – 1280x720
480p, 480i – 720x480
576p, 576i – 720x576
Frame Rates*** 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.