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 ОБНОВЛЕНИЕ КОДЕКОВ |
| AMV2 Video Codec 2.10a | AMV2 video codec is a simple to use piece of software that can be used by anyone. | | Лицензия: Freeware | ОС: Wondows 2000/XP/Vista |
Сайт автора: посетить | | Обновлено: 1 октября 2008 | Просмотров: 339 |
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| Lagarith Lossless Video Codec 1.3.19 | Lagarith is a lossless video codec intended for editing and archiving. Lagarith offers better compression than codecs like Huffyuv, Alparysoft, and CorePNG. There are a few lossless codecs that can compress better than Lagarith, such as MSU and FFV1; however Lagarith tends to be faster than these codecs. Lagarith is able to operate in several colorspaces - RGB24, RGB32, RGBA, YUY2, and YV12. For DVD video, the compression is typically only 10-30% better than Huffyuv. However, for high static scenes or highly compressible scenes, Lagarith significantly outperforms Huffyuv. A comparison for various types of video can be found here. Lagarith is able to outperform Huffyuv due to the fact that it uses a much better compression method. Pixel values are first predicted using median prediction (the same method used when "Predict Median" is selected in Huffyuv). This results in a much more compressible data stream. In Huffyuv, this byte stream would then be compress using Huffman compression. In Lagarith, the byte stream may be subjected to a modified Run Length Encoding if it will result in better compression. The resulting byte stream from that is then compressed using Arithmetic compression, which, unlike Huffman compression, can use fractional bits per symbol. This allows the compressed size to be very close to the entropy of the data, and is why Lagarith can compress simple frames much better than Huffyuv, and avoid expanding high static video. Additionally, Lagarith has support for null frames; if the previous frame is mathematically identical to the current, the current frame is discarded and the decoder will simply use the previous frame again.
The trade-off for this improved compression is speed. On a single processor system, Lagarith can be significantly slower than Huffyuv on typical video. Additionally, the decode speed tends to be slower than the encode speed; this is due to the nature of Arithmetic compression and the prediction algorithm. Fortunately, for the situations where the codec offers the most advantages over Huffyuv, the speed difference between the two tends to decrease, and Lagarith can be much faster for simple video. For multiple processor systems, Lagarith 1.3.0 can take advantage of additional processors; while Huffyuv cannot. On such systems Lagarith may be faster than Huffyuv.
This codec was build using the Huffyuv source as a template, and uses some Huffyuv code, most notably the routine to upsample YUY2 video to RGB and to perform pixel prediction on YUY2 video. Other colorspace conversion routines were taken from AviSynth. | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 23 сентября 2008 | Просмотров: 10405 |
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| MPEG-4 ALS | MPEG-4 ALS (audio lossless coding – кодирование звука без потерь), разработанные корпорацией NTT (Nippon Telegraph and Telephone). Спецификации, разработка которых велась с 2002 года, были приняты ISO (International Organization for Standardization) и IEC (International Electro technical Commission). | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 4 августа 2008 | Просмотров: 6081 |
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| WavPack 4.50 | WavPack is a completely open audio compression format providing lossless, high-quality lossy, and a unique hybrid compression mode. Although the technology is loosely based on previous versions of WavPack, the new version 4 format has been designed from the ground up to offer unparalleled performance and functionality.
In the default lossless mode WavPack acts just like a WinZip compressor for audio files. However, unlike MP3 or WMA encoding which can affect the sound quality, not a single bit of the original information is lost, so there's no chance of degradation. This makes lossless mode ideal for archiving audio material or any other situation where quality is paramount. The compression ratio depends on the source material, but generally is between 30% and 70%.
The hybrid mode provides all the advantages of lossless compression with an additional bonus. Instead of creating a single file, this mode creates both a relatively small, high-quality lossy file that can be used all by itself, and a "correction" file that (when combined with the lossy file) provides full lossless restoration. For some users this means never having to choose between lossless and lossy compression!
WavPack employs only well known, public domain techniques (i.e., linear prediction with LMS adaptation, Elias and Golomb codes) in its implementation. Methods and algorithms that have ever been patented (e.g., arithmetic coding, LZW compression) are specifically avoided. This ensures that WavPack encoders and decoders will remain open and royalty-free. | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 12 июля 2008 | Просмотров: 12870 |
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| MLC lossless codec 0.5 | Lossless video codec. Supports YUY2,YV12 and RGB24. Right click on the mlc.inf and select install to install. | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 8 июня 2008 | Просмотров: 955 |
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| PICVideo Lossless JPEG Codec | This codec is specifically designed for applications requiring high speed lossless compression and decompression. The PICVideo Lossless JPEG Codec is both a Microsoft Video for Windows Codec and a Microsoft DirectShow Transform Filter Codec. | | Лицензия: Shareware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 22 мая 2008 | Просмотров: 663 |
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| FLAC 1.2.1b | FLAC - это аббревиатура от Free Lossless Audio Codec (свободный аудиокодек, сжимающий без потерь). Проект FLAC включает:- потоковый формат; - базовые кодеры и декодеры в виде библиотек; - flac, утилиту командной строки, выполняющую сжатие и распаковку файлов .flac | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 5 апреля 2008 | Просмотров: 10424 |
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| TTA v3.4.1 | TTA lossless аудио кодек выполняющий сжатие звука без потерь в реальном времени. Степень сжатия от 30%-70% изменяется в зависимости от типа музыки. Сжатый аудио формат поддержует ID3v1 и ID3v2 теги. | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 5 апреля 2008 | Просмотров: 6963 |
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| Monkeys Audio 4.01 b2 | Программа для записи звуковых файлов в формате Monkey's Audio. Данный формат обеспечивает создание файлов небольшого объема с сохранением исходного качества, т.е. компрессия происходит без потери данных. Проигрывание данного формата | | Лицензия: Freeware | ОС: Windows All |
Сайт автора: посетить | | Обновлено: 5 апреля 2008 | Просмотров: 7158 |
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