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VideoCrunch® Codec 2.0 - Available
AVT's low bit-rate VideoCrunch® Codec 2.0, conforms to the MPEG-4
standard. MPEG-4 is the preferred international standard for encoding
and decoding in wireless multimedia applications. Its superior compression
algorithms are well suited to narrow band applications including
Internet video streaming, wireline and wireless videotelephony,
and videoconferencing.
AVT Videocrunch® MPEG-4 Video
Encoder/Decoder Software Specifications
|
Input |
Parameters |
Values |
| Frame
format |
YUV |
| Frame
size |
QCIF/CIF |
| Frame
rate |
~ 30
Hz |
|
Encoding |
Profile |
Simple
profile |
| Number
of object |
1 |
| Number
of layer |
1 (Base
layer) |
| Coded
picture type |
I,
P |
| Picture
format |
4:2:0 |
| MV
search range |
[-16,
15.5] |
| DCT |
8x8
block |
| Quantization |
DC:fixed,
AC:linear |
| Quantization
parameter |
[1,
31] |
| Error
resilience tools |
Resynchronization,
RVLC,
Data Partitioning |
|
Encoder Output |
Optimal
bit rate control |
Very
low bit rate:
~ 32 kbps(QCIF)
Low bit rate:
~ 384 kbps (CIF) |
|
Decoder Output |
Frame
format |
YUV |
| Frame
size |
QCIF/CIF |
| Frame
rate |
~ 30
Hz |
|
Error detection and concealment
technique |
|
Environments |
OS |
Windows98/NT,
Linux, PSOS, |
| Hardware
Platform |
IBMPC(500Mhz),
Trimedia DSP |
| Language |
MS
VC/C++ |
|
Characteristics |
Optimized in processing speed for
real time application |
|
Fast motion estimation/compensation
(patent pending). |
|
Rate distortion optimized bit rate
control |
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Robust error resilience for wireless
channel |
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