Vela 2000-0600, Инструкция по установке и эксплуатации

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52 CineCast HD Version 2.6 Installation and User Manual
MPEG PLAY Command
decoder detects that the DRAM buffer is empty. The decoder will wait for eight
64-K buffers to be filled before resuming playback. This mode requires that a
RESET BUFFER
be sent at the end of a stream, so the decoder knows the differ-
ence between the data underflow and the end of a stream. Also, the decoder
keeps a count of the number of times this data underrun condition occurs.
Refer to Mode Page (30h).
Mid-Stream Start (Midstrm)
By setting this bit to 1, the decoder will automatically find the first valid sequence
header before starting playback. This allows the start of playback in a random
position within an MPEG file. (This feature may delay video start-up by a few
frames. The end result will be more black between back-to-back videos.)
Autodetect must be used with mid-stream starts. By setting this bit to 0, the
decoder assumes that the MPEG stream begins on a valid sequence header.
Automatic Pause on First Visible Frame (Pause)
When this bit is set to 1, the decoder begins playback, but automatically pauses
on the first non-black video frame. This depends on the value of Pre-Black. Once
paused, use the
DECODER
(45
H
) command with code 0012h to resume from
pause. Alternatively, the
F RAME ADVANCE
(010
F
) command can be used to
advance one video frame.
Trigger
When this bit is set to 1, the decoder waits for the trigger event (as defined in Trigger
Event) to occur before beginning playback.
Autodetect
If the stream type is set to 00h, the decoder will parse the beginning of the stream
to determine stream type. The CineCast HD decoder currently only supports
MPEG-2 Transport streams.
Pre-Black
8-bit pre-black interval in video frames. A value of 0h uses default pre-black (first
frame). To display the first frame of video with no pre-black frames, set a value of 1.
NOTE: The CineCast HD does not currently support pre-black.
Stream Type Hex Code
Autodetect 00h
MPEG-2 Transport Stream 28h
NOTE: All other stream type codes are reserved.