Visual Circuits Mantis Media Gateway, Руководство пользователя

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15
E
NCODING
R
EQUIREMENTS
AND
R
ECOMMENDATIONS
Listed below are requirements and recommendations for both
Standard and High Definition encoding, that provide criteria to
create MPEG files compatible with the Mantis playback system.
Standard Definition (SD)
Encoding Requirements
1. Files must be one of the following types:
a. program stream MPEG2 or transport stream MPEG2
b. system stream MPEG1 of audio/video
c. elementary stream MPEG2
d. MPEG1 of video only
e. audio only
2. Use 4:2:0 encoding.
3. With MPEG-2, both audio and video fields must be encoded.
This is the normal default.
4. Audio only (Dolby Digital or MPEG Layer 2) files cannot be
mixed with files containing videos (MPEG, MPEG2 program
stream, video only).
5. Total output across all channels can not exceed 150 Mbps.
6. The presentation time stamp (PTS) values contained in the
audio and video streams in a file must be continuous and
increasing.
In particular, the PTS values should not reset to 0 at any point
in the file. The time between the first and last time stamps in a
file should reflect the actual duration of that file.
Do Not Use 4:2:2 encoding.