Video | Audio
| Voice | Image
SEDA Solutions'® in-depth knowledge and expertise in video coding
gathered through years of following the standard body as well as implementation
of the MPEG-4 video codec allows SEDA to confidently support its clients
in their programs for developing systems or sub-systems based on video
standards Such as MPEG-4 and/or H.264.
provides design and implementation services with particular attention
to software/hardware partitioning, complexity reductions and fixed-point
implementations for various video standards. SEDA Solutions® customizes
and optimizes encoder and decoder algorithms to work on any targeted
processor platform. In addition, SEDA also provides support for integrating
the encoder or decoder with the end-user system. SEDA Solutions'®
approach is not just to depend on hardware resources but also to enhance
the quality and simultaneously decrease the computational complexity
through algorithmic modifications and carefully chosen design approaches.
The end goal and result is a final product which is easily distinguishable
by a large performance margin from that of its competitors.
has identified and defined the Software/Hardware partitioning for a
variety of MPEG-4 and H.264 video applications ranging from mobile telephony
to high definition broadcasting. The functionality of these modules
is defined in a high-level environment, using C/C++ simulation and related
documentation. These specifications are now available for designing
co-processors or hardware accelerators. SEDA Solutions'® list of
hardware accelerators or coprocessor modules is comprised of the following:
- RGB to YUV Conversion
- YUV to RGB Conversion
- Motion Estimation
- DCT / IDCT
- 4x4 bock transform
- Inverse Quantizer
- De-Block Filtering
- Variable Length
MPEG-4 is an ISO/IEC standard with designation ISO/IEC 14496. It was
finalized and made into a formal international standard in 2000. Since
then several additions were made to the standard, notably the addition
of the Simple Profile Level 0 with suitable complexity to be used in
mobile environments such as the UMTS 3GPP networks. The MPEG-4 standard
improves on the MPEG-2 standard in both compression efficiency and coding
flexibility, and hence covers a wider range of applications. The MPEG-4
part 2 (visual coding) standard was developed to address applications
in emerging fields including, but not limited to digital television,
interactive graphics with synthetic contents, interactive multimedia
over the internet, and interactive video games.
has already implemented the MPEG-4 video encoder and decoder for the
simple and core profile on multiple platforms. The implementations are
based on existing fixed-point DSP core platforms. Due to the limitations
of the DSP cores, several hardware accelerators were identified and
designed to cope with the huge computational burden at the encoder as
well as the decoder side.
race to get multimedia applications to end-users has meant a surge of
video processing developments in consumer products. At SEDA Solutions®
we have established a team that has built a reference "C"
model. The SEDA Solutions® team is capable of transferring and mapping
specifications set by the standard bodies onto our clients' choice of
processors and system design. SEDA's MPEG4 and H.264 video technologies
are modified based on the application, profile, layer and the clients'
H.264/AVC is the
newest video-coding standard jointly developed by ITU-T Video Coding
Experts Group and the ISO/IEC Moving Picture Experts Group. The main
objective behind this joint development was to achieve enhanced compression
performance and superior video quality at comparable bit rates to existing
standards. The recommendation has been approved in 2003 by ITU-T as
H.264 and by ISO/IEC as International Standard 14496-10 (MPEG-4 part
10) Advanced Coding Standard. The H.264 codec offers a better quality
of compression when compared to that of the MPEG-4 codec at a given
bit rate. However, to achieve this gain in quality, a huge amount of
computational complexity has been sacrificed.
has embarked on the next challenge of identifying the computationally
intense modules in H.264 video codec. Our efforts are focused on identifying
and analyzing the computational load based on each module. The results
will then be used to assist us and/or our clients in benchmarking, quality
assessment and software/hardware partitioning.