TactX
24th January 2003, 11:39
I've just read the news on Heise.de (german) (http://www.heise.de/newsticker/data/vza-24.01.03-000/). Vanguard Software Solutions (VSS) has released a beta version of the H.264 codec (http://www.vsofts.com/codec/h264.html).
Quoted from the VSS-webpage:
VSS has been working on the ITU-T Recommendation H.264 (formerly H26L) video codec implementation since '2001. Our implementation is highly efficient, and we continue working on the enhancements.
Code optimization for speed has been done on both encoder and decoder. About 2.5 times speed up compared to the reference software is achieved just by the C-code optimization. We also performed custom optimizations for the following target platforms: Trimedia DSP, TI and Intel Pentium.
Encoder-specific optimization includes several new efficient (patent-pending) algorithms. Among them:
- Optional noise reduction preprocessing (This is not just a preprocessing in a usual sense. This noise reduction filter is in fact a part of the encoding process as it uses the results of motion estimation)
- Very fast and precise Motion Estimation algorithms;
- Intelligent macroblock type and reference frame selection;
- Perception-based quant-parameter modulation;
- Several rate distortion algorithms;
- Original rate and time control;
- Scene change detection.
Preprocessing / postprocessing.
Here, we implemented a lot of optional procedures, which can be executed before encoding and after decoding. Among them:
- Separate noise reduction filter;
- Smoothing and sharpening filters;
- Clipping, downscaling, upscaling;
- Interlace, deinterlace, Telecine, Inverse Telecine;
These are very flexible procedures that can be used in various combinations.
One of the features of our implementation is that it allows dynamically changing compression parameters of the encoder in real time if needed.
Quoted from the VSS-webpage:
VSS has been working on the ITU-T Recommendation H.264 (formerly H26L) video codec implementation since '2001. Our implementation is highly efficient, and we continue working on the enhancements.
Code optimization for speed has been done on both encoder and decoder. About 2.5 times speed up compared to the reference software is achieved just by the C-code optimization. We also performed custom optimizations for the following target platforms: Trimedia DSP, TI and Intel Pentium.
Encoder-specific optimization includes several new efficient (patent-pending) algorithms. Among them:
- Optional noise reduction preprocessing (This is not just a preprocessing in a usual sense. This noise reduction filter is in fact a part of the encoding process as it uses the results of motion estimation)
- Very fast and precise Motion Estimation algorithms;
- Intelligent macroblock type and reference frame selection;
- Perception-based quant-parameter modulation;
- Several rate distortion algorithms;
- Original rate and time control;
- Scene change detection.
Preprocessing / postprocessing.
Here, we implemented a lot of optional procedures, which can be executed before encoding and after decoding. Among them:
- Separate noise reduction filter;
- Smoothing and sharpening filters;
- Clipping, downscaling, upscaling;
- Interlace, deinterlace, Telecine, Inverse Telecine;
These are very flexible procedures that can be used in various combinations.
One of the features of our implementation is that it allows dynamically changing compression parameters of the encoder in real time if needed.