MPEG-4
影像壓縮 |
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MPEG-4 standard breaks down
complex multimedia data into individual video and audio
objects. Each object comes from synthetic or natural
environment. An effective encoding method is used for every
different object type.
Ateme provides MPEG-4
encoder and decoder for Texas Instruments C64x
and DM64x families and for PC
platform.
Our encoder and decoder are fully ISO
14496-2 compliants.
Pre- and post-processing tools are also available to build
your video application.
Ateme’s MPEG-4 encoder is declined in 3 configurations: from
the "MPEG-4 Simple" to the “MPEG-4
Advanced” encoder configuration, Ateme algorithms
offer you the opportunity to address the right multi-media
solution for your application.
Applications:
Multimedia applications, Internet
appliances, video-security systems, video-phone, consumer
equipment, video servers, etc.
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MPEG-4 Encoding
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MPEG-4 Decoding
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Encoder
features:
1. Simple configuration
- Max frame resolution: CIF (in 16 x 16 increment)
- Frame rate: Fixed and Variable
- I and P VOP supported
- AC/DC prediction
- Half pixel motion compensation
- Unrestricted motion vectors; ± 16 pixels motion vector
search
- I frame insertion: user-specified and automated
- Dynamic reconfiguration
- Full set of quality/speed tuning flags
- Regulation modes: CBR, VBR, ABR
- Adjustable video buffer size and occupancy (VBV mode used)
- Unlimited bitrate
- Quantization methods 1 & 2; custom quantization matrix
2. Standard configuration
The Standard version of our MPEG-4 encoder includes all the
features of the Simple version plus the following tools:
- Max frame resolution: Full (in 16 x 16 increment)
- ± 128 pixels motion vector search
- Short header (H263 baseline compatibility)
- Error resilience tools (Slice resynchronization, data
partitioning, reversible VLC)
3. Advanced configuration
-The Advanced version of our MPEG-4 encoder includes all the
features of the Standard version plus the following tools:
- 4 motion vectors
- Automatic scene change detection
- 2-pass encoding
- Psychovisual quality enhancement
- Interlaced support
- Quarter pixel motion compensation
- Global motion estimation
Decoder features:
MPEG-4 decoder is compatible with
all Ateme’s encoder configurations (Simple,
Standard, Advanced).
Our decoder library takes Video Elementary Streams
as input.
In addition, it can decode MPEG-4 Simple Object,
Advanced Simple Object and also DivX
3.11™, DivX 4™, DivX 5™, XviD™,
3ivx™ encoded streams.
Filters:
A set of noise-reduction filters is
available for the encoder platform.
Post-processing filters can also be used after video stream
decompression.
詳細介紹與功能請聯絡 tech@ict.com.tw
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