AL Tech Portable MPEG Player User Manual download pdf

IT/AV Report

technology

By Ramzi Shakra

Ramzi Shakra, Mar-

keting Director at

Electrosonic, has more

than 15 years of experi-

ence in broadcast and

commercial AV sales,

marketing and product

development. Shakra

previously worked at

Doremi Labs as Mar-

keting Director.

Today’s video playback devices offer robust features highly optimized for

their target application, from palm-sized players designed for digital signage and

interactive kiosks to highly sophisticated servers for large screen projection and

planetariums. It’s not possible in the space we have here to cover all the myriad

options and categories available. However, emphasis will be placed on the low-cost

professional video players because these devices cover the needs of a majority of

installation types. They are designed for playback on small- to mid-sized displays

in such applications as theme parks, museums, retail and advertising-driven digi-

tal signage.

Image Quality

Due to the digital outputs of video players, image quality is primarily a function

of the compression type, resolution, bit rate and scaling utilized. As can be expect-

ed, MPEG compression is the most prevalent, with support for MPEG1, MPEG2

and H.264 (MPEG4 Part 10). High-end players use native JPEG2000 compres-

sion or uncompressed playback. File format support tends to vary from device to

device, so it’s important to ensure that the player supports the ﬁle format type the

content will be delivered in.

The current crop of players typically max out at 30fps at 1920x1080 and use

frame doubling on the output to achieve 60p. All else being equal, the higher the

bit rate (or less compression), the better the video quality. Higher bit rates are

necessary for larger displays. Compression type is also a big factor in image qual-

ity. A 10Mbps H.264 ﬁle will look better than one encoded at 10Mbps MPEG2.

Key considerations for digital signage applications.

Choosing The Right Video Player

The SECU Daily Planet at the North Carolina Museum of

Natural Sciences features an immersive 40-foot-high screen

that spans three ﬂoors. Delta media servers from 7

Sense

handle all warping, blending and color balancing.

Photo courtesy batwin + robin

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Summary of Contents

Page 1 - Image Quality

30IT/AV ReporttechnologyBy Ramzi ShakraRamzi Shakra, Mar-keting Director at Electrosonic, has more than 15 years of experi-ence in broadcast and comme

Page 2 - Playlist & File Transfer

32IT/AV ReportTips » Avoid excessive video processing by the player or display. » Pick a display with a native resolution that matches the playe

Page 3 - HDMI over UTP EXTENDER with

33Fall 2013www.ITAVReport.comtechnologyable hard drives and, more recently, solid-state hard drives. If device control and ﬁle trans-fer will be perfo

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AL Tech Portable MPEG Player User Manual

Browse online or download User Manual for MP3/MP4 players AL Tech Portable MPEG Player. Choosing The Right Video Player

Summary of Contents

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