Sony Ericsson K800c, K790i, K790c, W850I, D750 User Manual

Formatting video for local playback

Introduction

This document introduces the broader concepts of digital video multimedia, and the specific details of formatting
video for Sony Ericsson phones using local storage and playback. A practical example of the process is also
included.

People who may benefit from this document include:

• Content providers.

• Software developers.

• Operators and service providers.
The competence required to follow this document extends only to basic computer skills, as all concepts are fully

explained. Prior experience with editing or formatting digital video is advantageous.Sony Ericsson mobile phones
that are covered by this document:

Generic names series Sony Ericsson Mobile Phones

K800 K800i, K800c, K800a
K790 K790i, K790c, K790a
K750 K750i, K750c, D750
K610 K610im, K610i, K610c, K618i
W900 W900i
W850 W850i, W850c
W810 W810i, W810c, W810a
W800 W800i, W800c
W600 W600i
W550 W550i, W550c
W300 W300i, W300c
Z610 Z610i
K800 K800i, K800c, K800a
K790 K790i, K790c, K790a
K750 K750i, K750c, D750
K610 K610im, K610i, K610c, K618i
W900 W900i
W850 W850i, W850c

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Formatting video for local playback

W810 W810i, W810c, W810a
W800 W800i, W800c
W600 W600i
W550 W550i, W550c
W300 W300i, W300c
Z610 Z610i

Note: Other Sony Ericsson phones can support the same containers and compression codecs as the phones
listed here, however the exact parameters needed to encode videos for those phones may differ. As such it is
recommended to verify successful playback on those phones when creating video for them.

Terminology

Anti-aliasing \- The technique of minimizing aliasing (jagged or blocky patterns) when representing a high-resolution

signal at a lower resolution. In most cases, anti-aliasing means removing data at too high a frequency to represent.
When sampling is performed without removing this part of the signal, it causes undesirable artifacts such as
black-and-white noise.

Aspect Ratio \- The ratio of pixels in width to pixels in height.
Audio Normalisation \- The process of adding volume gain to the audio track up to the point just before distortion or

clipping will occur.

Bit Rate \- The number of bits used to compress a data stream, typically measured in kilobits-per-second (kbps).
Codec \- COmpressor/DECompressor an algorithm that compresses and decompresses data streams.
Container \- The package that video and audio streams are placed in, to ensure synchronised playback.
Data Stream \- The encoded video data.
Decoding \- Decompressing a data stream through a codec.
Frame Rate \- The number of video frames displayed every second.
Encoding \- Compressing a data stream through a codec.
IsoMedia \- A generic name for all formats based on the MPEG-4 Part 12 specification: MP4 and 3GP.
Lossy Compression \- A codec that discards some data when encoding a data stream.
Mono Sound \- Audio consisting of a single channel.
Multimedia \- Video Media file containing video and audio tracks.
Multiplexing \- The act of placing data streams inside a container, also referred to as muxing.
Pixel Resolution \- The number of pixels used in an image, as height by width.
Rendering \- The process of applying timeline instructions for effects to produce a video file.
Sample Rate \- The number of audio samples per second, measured in KHz or Hz.

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Sampling \- The act of taking a portion of one sound recording, the sample, and reusing it as an instrument or
element of a new recording.

Stereo Sound \- Audio consisting of two channels, left and right.
Streaming \- A method for making audio, video and other multimedia available in near realtime, that is the user can

begin to watch or hear the content of a downloaded media file after only a short delay. Previously it was necessary to
download an entire file before playing it.

Transcoding \- Encoding an already compressed data stream to a different codec.

Abreviations

3GP - A multimedia container format defined by 3GPP for use on 3G mobile phones. It is a simplified version of
MPEG-4 Part 14 (MP4). 3GP files have the filename extension .3gp or .3g2. 3GP stores video streams as MPEG-4
or H.263, and audio streams as AMR-NB or AAC-LC formats.

3GPP \- 3rd Generation Partnership Project.
3ivx \- A commercial video codec suite that allows the creation of MPEG-4 compliant data streams.
AAC \- Advanced Audio Coding.
AAC-LC \- Advanced Audio Coding. Low Complexity.
AC3 \- Audio File Format.
AIFF \- Audio Interchange File.
AMR \- Adaptive Multi-Rate (NB = NarrowBand, WB = WideBand).
AVI \- Audio Video Interleave Container File.
CBR \- Constant Bit Rate.
DivX \- Video Codec. DivX has the ability to compress lengthy video segments into small sizes while maintaining

relatively high visual quality. DivX uses lossy MPEG-4 Part 2 compression.

ETSI \- European Telecommunications Standards Institute.
FLAC \- Free Lossless Audio Codec.
H.263 \- Video Codec. Predecessor of H.264.
H.264 \- Also known as MPEG-4 AVC (Advanced Video Coding), is a video compression standard that offers

significantly greater compression than its predecessors, for example, MPEG-4 ASP (Advanced Simple Profile).

M4A \- MPEG-4 Audio Layer.
MOV \- QuickTime Video Clip.
MP3 \- MPEG Audio Stream, Layer 3.
MP4 \- MPEG-4 Video File.

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MPEG \- Moving Picture Experts Group, develops standards for digital video and digital audio compression. The
MPEG standards are an evolving series, each designed for a different purpose.

MPG \- MPEG-1 file.
OGG \- Ogg Vorbis Codec Compressed WAV File. An open source patent-free audio compression format. Vorbis

files compress to a smaller size than MP3 files.
PCM \- Pulse code modulation. A digital scheme for transmitting analog data. Using PCM, it is possible to digitize all

forms of analog data, including full-motion video, voices, music, telemetry, and virtual reality (VR). QCIF \- Quarter
Common Intermediate Format. Video encoding format with 176 × 144 resolution.

QVGA \- Quarter Video Graphics Array. 320 × 240 resolution.
VBR \- Variable Bit Rate.
WAV \- Waveform Audio File.
WMA \- Windows Media Audio File.
WMV \- Windows Media Video File.
XviD \- A free and open source MPEG-4 video codec. XviD features MPEG-4 advanced simple profile features.

Trademarks and aknowledgements

Vegas™ is a trademark or registered trademark of Sony Corporation.
Microsoft® and Windows® are either registered trademarks or trademarks of Microsoft Corporation in the
United States and/or other countries.
Apple, QuickTime and Final Cut are a trademarks of Apple Computer, Inc., registered in the U.S. and other
countries.
Premiere™, After Effects™ and Audition™ are trademarks or registered trademarks of Adobe Systems
Incorporated.
Nero is a registered trademark of Nero AG.
3GPP is a trademark or registered trademark of ETSI.
Other product and company names mentioned herein may be the trademarks of their respective owners.

{*}Components of digital multimedia video{*}

Digital multimedia video generally consists of two major elements; a video track, with an accompanying audio track.
These tracks or components of the video are termed data streams. Although typically there is one data stream for
video and another for audio, it is also possible for more than two data streams to be present. An example of this
is the commentary feature found on many DVDs, where the second of two audio data streams can be chosen to
accompany the video stream.

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