Sony Ericsson Portable Multimedia Player 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  
K800  
Sony Ericsson Mobile Phones  
K800i, K800c, K800a  
K790i, K790c, K790a  
K750i, K750c, D750  
K610im, K610i, K610c, K618i  
W900i  
K790  
K750  
K610  
W900  
W850  
W850i, W850c  
W810  
W810i, W810c, W810a  
W800i, W800c  
W800  
W600  
W600i  
W550  
W550i, W550c  
W300  
W300i, W300c  
Z610  
Z610i  
K800  
K800i, K800c, K800a  
K790i, K790c, K790a  
K750i, K750c, D750  
K610im, K610i, K610c, K618i  
W900i  
K790  
K750  
K610  
W900  
W850  
W850i, W850c  
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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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Resolution  
Both visible and audible information are naturally analogue mediums. This analogue information must be sampled to  
be stored digitally. The number of samples dictates the resolution of the digital copy, with more samples improving  
the resolution and definition. Within the scope of this document and its purpose, there are only four digital sample  
resolutions that are relevant. The first is the visual resolution of the video stream, measured in pixels as width by  
height, comparable to resolution of your computer display. Higher pixel resolution permits more detailed images. The  
visual resolution also dictates the aspect ratio of the video. Aspect ratio is the ratio of width to height, typically 16:9  
for widescreen video, and 4:3 for standard video.  
The second is the temporal resolution of the video stream; the frame rate, measured in frames-per-second (fps). It  
affects the perceived smoothness of motion in the video. With the aid of motion blur and similar effects that make use  
of how our eyes perceive movement, 24 fps is the minimum to produce perfectly fluid motion on any scene, and is  
the standard for feature films. Slightly lower frame rates are still quite smooth to the eye for many scenes, down to  
around 20 fps, below which a staggered effect on motion is ever more easily perceived by the viewer.  
The third resolution of importance is the temporal resolution of the audio stream; termed sample rate, and measured  
in kilohertz (KHz). It governs the maximum sound frequency (as in pitch) the digital audio stream can contain. To  
reproduce a sound in a digital copy, the sample rate must be at least double the frequency of the sound. 44.1KHz  
and 48Khz are the main sample rate standards in multimedia video, therefore covering frequencies beyond the upper  
audible range of 20KHz.  
Finally there is also the directional resolution of the audio stream, measured by the number of channels present in  
the audio. A single channel is a mono recording, while two channels afford stereo sound. Increasing channels further  
to 4 or 5 allows fully directional surround sound, for example, 5.1 surround sound uses 5 channels in a digital audio  
stream.  
Compression  
To reduce storage requirements and improve portability, data streams in digital video are usually compressed. Each  
stream is passed through a compression algorithm, referred to as a codec (COmpresser/ DECompressor). Separate  
codecs are used for video and audio streams, as each stream has quite different characteristics.  
The act of compressing a stream is known as encoding. In order to play back a compressed stream, it must be  
decoded. Therefore the playback hardware must support decoding of the compression codec used. Converting an  
already compressed stream from one codec to another codec is termed transcoding.  
Compression is usually 'lossy', meaning that some data is lost and the compressed stream is not a bitperfect copy of  
the original. Whether the effect of these 'lost' bits of data is perceptible upon playback depends greatly on the type  
and amount of compression used. Data loss from high compression levels can introduce perceptible noise and other  
distortions into a stream, and these noticeable effects are termed compression artefacts.  
Compression amounts are set by the amount of data assigned to the stream, typically measured in kilobits\-  
per-second (kbps), and referred to as bit rate (as in the rate of bits assigned). Compression codecs often have  
sub-features that extent or improve their performance. It is important to note that some playback devices do not  
support certain features of a codec. To make the compatibility of these features easier to manage and understand,  
most codecs have profiles and/or levels describing which features and parameters can be used.  
For example, MPEG-4 video can be encoded in Simple or Advanced Simple profiles in levels of 0 to 5, with simple  
profile level 1 being used for video on mobile phones, and advanced simple profile levels used on most web video  
content. Another example is WMV video, which comes in profiles such as WMV8, WMV9, and WMV9.1.  
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Video codecs include MPEG-1 and MPEG-2 as used for DVDs, and the many extensions and implementations of  
MPEG-4 such as WMV9, H.264, DivX, and so on. Common audio codecs include MP3, OGG, AAC, WMA, and AMR.  
{*}Containers{*}  
The separate data streams are almost always multiplexed (also referred to as 'muxed') together into one file,  
facilitating delivery and playback of both video and audio stream as a single object. The data streams are packaged  
in what is called a container file. You will likely already know several container types as filename extensions, such as  
AVI which is an Audio Video Interleave container file.  
The container also serves to present the streams to playback devices so that they remain synchronised on playback,  
by linking positions in one stream to positions in the other; interleaving them. They also present the streams in a  
standardised structure, with an index of the contained streams and other assorted metadata.  
Simply recognising the container type also provides a good indication of the likely compression codecs used on  
the data streams inside them, without reading the stream data from the container, once you know the compression  
codecs supported within certain containers.For example, MP4 files are the MPEG-4 IsoMedia container, and from  
that we can assume that the video stream uses a form of MPEG-4 compression with AAC compression for audio.  
Similarly WMV files are Advanced Systems Format (ASF) containers using WMV video streams and WMA audio  
streams. AVI files are Audio Video Interleave containers that use Video-For-Windows compatible codecs for video  
streams and generally WAV or MP3 audio streams.  
{*}Formatting video for Sony Ericsson phones{*}  
This section contains specific details and recommendations on creating video content for Sony Ericsson phones that  
will be stored and played from the phone's local memory (internal memory or a memory card). As such it is suitable  
for any video content that does not require real-time delivery to the phone.  
{*}Supported containers{*}  
Sony Ericsson phones have very functional support for the IsoMedia container as 3GP and MP4. MP4 containers  
support MPEG-4 video streams and several types of AAC audio stream. 3GP is a simplified version of the container  
that is used primarily for low bandwidth applications such as streaming content; it has additional support for AMR  
audio tracks and H.263 video, and support for LC-AAC. As AAC offers considerably greater audio quality than AMR,  
and similarly MPEG-4 video implementations outperform H.263, MP4 is the recommended container format to use.  
Within the container, Sony Ericsson phones support only one video stream and one audio stream.  
Detailed specifications  
For software developers, the relevant ISO specifications for MPEG-4 multimedia content in relation to  
Sony Ericsson phones are:  
• MP4 container - MPEG-4 Parts 12 & 14 / ISO 14496-12 & 14496-14.  
• MPEG-4 Visual - MPEG-4 Part 2 / ISO 14496-2.  
• MPEG-4 Audio - MPEG-4 Part 3 / ISO 14496-3.  
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Audio codec  
Advanced Audio Coding (AAC) compression has a standard profile known as Low Complexity, or LCAAC. As the  
name suggests it is a computationally cheap form of compression, requiring little processor time. Originally designed  
for the MPEG-2 format as a more efficient replacement for MP3, it offers higher sound quality than MP3 compression  
at the same bit rate. AAC also offers a second profile called High Efficiency, HE-AAC, or AAC+, that further improves  
sound quality at bitrates below 64kbps.  
For multimedia video, LC-AAC is the recommended AAC profile to use. Its low processor utilisation and consistent  
processor load at constant bit rates allows processing power to be better spent on the more demanding task of  
video stream decoding. HE-AAC can be used, but due to the extra complexity involved, video playback can often be  
compromised in terms of fluidity and loss of A/V stream synchronisation. Although this can be resolved by reducing  
video bit rate, for often zero gain in overall audio quality the overall video quality suffers due to the inconsistent  
processing load HE-AAC decoding generates.  
Several implementations of the LC-AAC codec exist, with varying levels of optimisation and performance offered at  
equal bitrates. For most multimedia content, any standards compliant LC-AAC implementation is sufficient. However,  
all content, and especially music videos, will benefit from the higher quality audio encoding offered by the optimised  
Apple or Nero AAC codecs.  
{*}Video codec{*}  
MPEG-4 video streams come under two visual profiles; Simple and Advanced Simple. Simple is designed for  
low bandwidth applications and portable devices. Sony Ericsson phones support the simple visual profile only.  
The simple profile has 4 levels defined for it. These levels suggest video resolution, frame rate, bit rate, and other  
values. If you adhere to the strict definition of these levels, Sony Ericsson phones only support level 0. With some  
customisation of the suggested values, Sony Ericsson phones can also support modified levels up to level 3.  
There are many implementations of the MPEG-4 visual codec, with quite extreme differences in encoding  
quality. Available MPEG-4 codecs include DivX, XviD, 3ivx, Apple MPEG-4, Nero MPEG-4, and many standard  
implementations found in various video editing software.  
Many MPEG-4 implementations offer the choice of single pass (1 pass) or 2 pass encoding. In 2 pass encodings,  
the source video stream to be transcoded is read twice, using the first pass to inspect the overall complexity of the  
video, and the encoder then assigns a higher bit rate to the more visually complex passages of the video on the  
second pass, and lower bitrates to simple passages. In 2 pass encodings use of available bit rate is more efficient,  
but it often results in the encoder using a higher bit rate on some passages than mobile phones support. As such you  
should ensure any MPEG-4 codec is using single pass mode when you encode a video stream. The one exception  
to that rule is if your target bit rate is well below the optimal value for the phone, as sufficient bit rate overhead is  
available in that instance.  
Although any standard MPEG-4 visual codec that supports the simple profile can be used to encode video streams  
for Sony Ericsson phones, it is not advisable for optimal results. The recommended MPEG\- 4 visual codec is XviD,  
a very mature implementation with specific optimisations for low bitrate encoding in the simple visual profile. It offers  
significant quality gains compared to other codecs in low bitrate applications such as mobile phones. It is important  
to note that MPEG-4 video support on Sony Ericsson phones is only supported in the simple profile. A great deal of  
online video content also uses MPEG-4 video codecs, such as the above mentioned XviD, or DivX. However they  
will likely be MPEG-4 video encoded using the advanced simple profile, which is unsupported on Sony Ericsson  
phones. This means that although they may share the same codec they will need to be transcoded to MPEG-4 in the  
simple profile, for use on mobile phones.  
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{*}Recommended video and audio stream parameters{*}  
Recommended audio codecs, bitrates, and parameters  
The table below shows suggested values when encoding video and audio streams for local playback on Sony  
Ericsson phonesThe basic video parameters will offer basic quality upon playback. Conversely the optimal  
parameters will give truly excellent quality on Sony Ericsson phones, with fluid motion, rich details, and minimal  
compression artefacts.  
W810, W800, W550, W600, W300,  
K750, K610, Z610  
W900, W850, K800, K790  
Basic video  
MPEG-4 Visual Simple, Level 0  
MPEG-4 Visual Simple, Level 0  
Video resolution  
Frame rate (fps)  
Bit rate (kbps)  
Optimal video  
176x144 (QCIF)  
176x144 (QCIF)  
15  
64  
15  
64  
XviD MPEG-4 Visual Simple,  
Modified Level 2  
XviD MPEG-4 Visual Simple,  
Modified Level 3  
Video resolution  
Frame rate (fps)  
Bit rate (kbps)  
Basic audio  
176x144 (QCIF)  
320x240 (QVGA)  
20  
25  
140  
300  
LC-AAC  
LC-AAC  
Channels  
2
2
Sample rate (KHz)  
Bit rate (kbps)  
Optimal audio  
Channels  
44.1 / 48  
44.1 / 48  
64  
64  
Apple / Nero LC-AAC  
Apple / Nero LC-AAC  
2
2
Sample rate (KHz)  
Bit rate (kbps)  
44.1 / 48  
96  
44.1 / 48  
96  
Basic audio parameters produce acceptable audio quality, while the optimal parameters significantly reduce any  
perceptible audio compression artefacts. Increasing parameters beyond the optimum values is possible with  
successful results, but it may introduce pauses and other unwanted errors when the media content is played on the  
target phone. As such it is not recommended, unless you can invest the time to verify successful playback on the  
target phones for each individual multimedia video.  
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Using parameters somewhere between the basic and optimal values can be practical when the file size of multimedia  
content is a concern. Bit rate values can be used to control file size. When reducing bit rate by a large extent it is  
also advised to scale the frame rate or sample rate of the data stream in proportion, to prevent introducing excessive  
compression artefacts.  
{*}The process of formatting multimedia video{*}  
Typically, there are four stages involved in formatting existing multimedia video for Sony Ericsson phones.  
The process is normally as follows:  
1. Edit the various video resolutions to suit the target phone.  
2. Encode the video stream to MPEG-4 visual simple.  
3. Encode the audio stream to LC-AAC.  
4. Multiplex both streams into an MP4 container file.  
With multimedia video software that supports the MP4 container as an output format, such as Apple Quicktime  
Pro or Final Cut Studio, transcoding both streams to the required codecs can be done together, and multiplexing  
is performed automatically. Stages 2, 3, and 4 are essentially condensed to one stage. However, for most video  
composition software, AVI is the recommended available output container for the MPEG-4 video stream. Similarly  
although some video software supports AAC compression as an output format, for most software it is suggested to  
export the audio stream to WAV and then encode to LC-AAC with an external codec or other audio software. Finally  
multiplexing can be achieved with tools that support MP4 container authoring.  
For most video composition software, when making use of Apple Quicktime Pro to encode data streams and  
multiplex to an MP4 container, it is recommended to output multimedia video in the MOV format. The MOV format  
allows the multimedia video to be easily opened by Quicktime Pro.  
{*}Other considerations{*}  
The following is general advice to achieve better results when formatting multimedia video for Sony Ericsson phones.  
Sony Ericsson phone screens have a 4:3 aspect ratio. The visual resolution of the source media may be of a  
different aspect ratio, such as widescreen 16:9. Whilst it is possible to add black borders to the top and bottom of  
the video to preserve the aspect ratio, due to the limited size of mobile phone screens it is recommended to instead  
crop pixels from the sides of the video so it becomes 4:3 aspect. Most media content is designed to permit this  
without losing significant areas of the image, for applications such as 4:3 aspect television broadcasts.It is best to  
start with sources of a higher visual resolution than the target phone. Through intelligent downsampling to the phone  
resolution, a lot of detail can be preserved compared to beginning with a low visual resolution source. It is advised  
to use an anti-aliasing filter when resizing the visual resolution of the media. Most video composition software will  
automatically apply the anti-aliasing filter.  
MPEG-4 visual codecs tend to smooth out visible details in a video at the bitrates and resolutions used for mobile  
phones. To combat this, adding a sharpening filter after resizing a video source is suggested. A sharpening filter  
will exaggerate edges, details, and highlights, and this 'hinting' of the video causes the codec to pay closer attention  
to such subtle details that would otherwise be smoothed out. Use of sharpening filters should be judicial, as they  
increase the bit rate required to encode a video to a certain quality level. In situations where there is insufficient bit  
rate available, sharpening filters should be avoided.  
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Mobile phones have limited audio amplification power, so it is useful to make the audio stream as loud as possible,  
without compressing dynamic range. This can be done through a technique known as peak normalisation, which will  
increase the volume of the entire audio stream until the loudest moment is at the absolute maximum volume. Most  
audio editing software contains this feature, and other tools are also available to achieve it.  
You may desire to create a single version of your multimedia video that is compatible with all current Sony Ericsson  
phones listed in this document, whilst retaining the best quality possible. You can use the table in "Recommended  
video and audio stream parameters" on page 12 to determine optimal parameters for this, which indicates QVGA  
capable phones will also play QCIF resolution video streams.  
Tutorial  
This section shows an example of how to format a multimedia video to the optimal quality for phones supporting the  
QCIF (176x144) visual resolution. The source multimedia video SEexample.avi is included in the archive with this  
document. The source media is of different resolution and aspect ratio in order to address the issues of correcting  
them within this example.  
Note: Please consult the relevant licenses for any software before using it for commercial and/or personal purposes.  
Software  
Required software  
The following software is needed to complete this tutorial:  
Microsoft® Windows® 2000 or Microsoft® Windows® XP \- as operating system. Make sure the latest service  
pack is installed.  
Sony Vegas™ 6.0 \- to illustrate resizing video pixel resolution, normalising audio stream volume, as well as  
altering video aspect ratio and frame rate.  
Apple Quicktime Pro 7.0 \- to encode both MPEG-4 and AAC data streams, and multiplexing these streams into  
an MP4 IsoMedia container suitable for phone playback.  
Other usable software  
Video editing \- the video editing steps are easily translated to other commercial video composition software such  
as Adobe Premiere™ and Adobe After Effects™.  
Audio normalisation and encoding \- can be achieved with audio software such as Adobe Audition™, Nero  
SoundTrax, and many others.  
Data stream encoding \- can be alternatively achieved by external encoders such as the XviD MPEG-4 encoder  
and Nero AAC encoder. Separate IsoMedia container authoring software such as GPAC Mp4box can be used to  
place streams inside an MP4 container.  
Other software \- other software such as Apple's Final Cut Studio can accomplish all processes involved within a  
single application.  
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Software set-up  
1. Install the required software, see "Required software"  
2. Select a folder on your computer as a location for saving files, for example, C:\videos. Whatever location you  
select will be referred to in this document as the working directory.  
3. Place a copy of SEexample.avi into the working directory.  
Creating the video project  
1. Open Sony Vegas™ 6.0 and create a new project using the menu File - New....  
2. In the New Project dialog make the following settings on the Video tab:  
• Width: 176  
• Height: 144  
• Frame Rate: 20.00  
• Field order: none (progressive scan)  
• Pixel aspect: 1.0 (square)  
You may optionally wish to save these settings as a project template by entering a new name in the Template  
setting, and then clicking the Save icon.  
3. On the Audio tab ensure the following is set:  
• Master bus mode: Stereo  
• Number of stereo buses: 1  
• Sample rate (Hz): 44,100  
• Bit depth: 16  
4. Click the Ok button to create the new project.  
Importing the source video and formatting track properties  
1. Return to the menu and select File - Import - Media...  
2. Browse to your working directory and open the SEexample.avi file.  
3. Select SEexample.avi in the Project Media window and drag it to the track list (the empty panel on the left, above  
the Project Media window).  
The video and audio tracks within SEexample.avi are added to the project, and a series of thumbnails illustrating the  
video track contents will appear in the track view.  
4. Right click one of these thumbnails and select Video Event Pan/Crop... The Event Pan/Crop dialog opens.  
5. You will find a Preset option at the very top of the dialog. Set Preset: to 4:3 Standard TV aspect ratio.  
The dotted video frame shown in the dialog will now be 4:3 aspect ratio and also centred on the middle on the video.  
This will make better use of the limited display size on the phone.  
6. Close the dialog.  
7. On the track view you will also see the audio track displayed as a wave graph underneath the video track  
thumbnails. Right click the wave graph of the audio track and select Properties...  
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8. In the Properties dialog that appears, check the Normalize option. Click Ok to return to the main window. This will  
normalise the audio volume level, making the best use of the limited volume on mobile phones.  
Exporting the formatted video project  
1. On the menu select File - Render as... and a new dialog will appear.  
2. In the Render As dialog, browse to your working directory, and set the following:  
• Save as type: Quicktime 6 (*.mov)  
• File name: SEexample.mov  
3. Click Save to begin rendering the video. Once this is complete, you may close Sony Vegas™ 6.0, optionally  
saving the project for future reference.  
Transcoding stream to MPEG-4/AAC within and MP4 file  
This step requires the use of Apple Quicktime Pro 7.  
1. Open the file that was just created by Sony Vegas™ 6.0 (SEexample.mov) using the Quicktime 7 player.  
2. Using the menu go to File - Export... or press ctrl-e. The Save exported file as dialog will appear.  
3. Set the Export option: to Movie to MPEG-4.  
4. Now click the Options... button and the MPEG-4 Export Settings dialog will appear.  
5. Set the File Format: option to MP4.  
6. Ensure the topmost drop down menu is set to Video and set the following:  
• Video Format: MPEG-4 Improved  
• Data Rate: 140 kbits/sec  
• Image Size: Current  
• Frame Rate: Current  
• Key Frame: Every - 100 frames  
7. Change the topmost drop down menu to Audio and set the following:  
• Audio Format: AAC-LC (Music)  
• Data Rate: 96 kbps  
• Channels: Stereo  
• Output Sample Rate: 44.100 kHz  
8. Click the Ok button to return to the Save exported file as dialog. Browse to your working directory and enter a  
filename of SEexample.mp4.  
9. Click the Save button. Once the process is complete, the file SEexample.mp4 is ready for playback on QCIF  
compatible phones.  
Conclusion  
Content providers, operators and service providers, and other interested parties, have the fundamental information  
required for successfully formatting multimedia video content to an impressive level of quality, for playback on Sony  
Ericsson phones (from local storage).  
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This extends to the exact specifications and practical details of data stream compression and using suitable  
containers. Optional extra processes and suggestions can be employed to further enrich the level of quality at which  
the multimedia video content is delivered.  
Those with no prior experience of editing or formatting digital multimedia video will hopefully find the background  
information sufficiently enlightening, such that they can understand the more specific requirements of Sony Ericsson  
phones, and feel confident about the task of formatting multimedia video for them.  
Software developers can access the noted ISO standards that define the container formats and compression  
algorithms employed.  
Generated by Clearspace on 2008-05-18-05:00  
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