Evido EAD-B1000 Bedienungsanleitung PDF herunterladen (Seite 22)

July 24, 2008 16 Digital Broadcaster User Manual v. 3.4 rev. 3421

Encoding Requirements and Recommendations

Before using the Web Application to build a database of content that can be played, you have

to upload the content to the Digital Broadcaster via your network or capture content to the

Digital Broadcaster via the optional onboard MPEG Encoder. The minimum encoding

requirements, as well as encoding recommendations, listed below provide a minimum set of

criteria to create compatible MPEG content. The applicability of the recommendations

depends on the encoder and the editing software your installation uses.

TelVue strongly recommends you review these encoding requirements and

recommendations, as well as the requirements for your encoder and editing

software, to determine what encoding criteria will work best for your

installation. Encode and test a few files before committing resources to a

large effort.

Encoding Requirements

The Digital Broadcaster supports standard MPEG program and transport streams. In order to

ensure optimum video playout quality on the Digital Broadcaster, MPEG video and audio

content must be encoded to certain specifications.

Video

Audio

Output Type

4:2:0

4:2:2

MPEG-1,

Layer II

Stereo

AC-3

5.1

Linear

PCM

(LPCM)

B-series Analog



B-Series SDI



B-Series HD-SDI



• B-series ASI and IPTV servers support MPEG-2 Transport streams with Constant

Rate Transport only.

• Video files for playout must be encoded into a multiplexed MPEG-2 program or

transport stream or MPEG-1 system stream format. Video can be encoded at rates up

to 15 Mbps.

• The video and audio timestamps in a file must be continuous and increasing, with no

haphazard edits that might affect the timestamps. The time between the first and last

timestamps in a file should reflect the actual duration of the file.

Encoding Recommendations

TelVue recommends you follow these criteria when encoding. However, the criteria you

need to encode MPEG files for use at your installation will vary, depending on the encoder in

use, whether you edit files or just play them end-to-end, and the software used to edit files.

Refer to the encoder and editing software documentation for their requirements.

• MPEG profile and level: main profile, main level (requirement)

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