ePrivacy and GPDR Cookie Consent by Cookie Consent

Lagarith Lossless Video Codec 1.3.27

Ben Greenwood in Audio & Multimedia / Video Tools

Lagarith Lossless Video Codec screenshot

User Rating: 2.4 (24 votes)

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. 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. Lagarith is released under the GPL.

File Size: 440 kB License: Freeware Price: FREE
Platform: Windows XP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64
Downloads: Total: 164 | This Month: 3 Released: 2012-02-10
Lagarith Lossless Video Codec Similar Software
Popular Software in Audio & Multimedia / Video Tools

VLC Media Player 3.0.10 Videolan    

VLC 2.0 "Twoflower" is a major new version of our popular media player. Free download of VLC Media Player 3.0.10

software pick   

FilmForth 1.1 IoForth Inc.    

FilmForth is an intuitive and powerful free video editor.. Free download of FilmForth 1.1

DVDFab_uhd_cinavia_removal_for_mac 12.0.0.3 Fengtao Software Inc.    

It is the world's first complete and permanent 4K UHD Cinavia removal solution.. Free download of DVDFab_uhd_cinavia_removal_for_mac 12.0.0.3

Karaoke Video Creator 2.4.19 Doblon    

Allows to create video that two singers can sing at the same time. Free download of Karaoke Video Creator 2.4.19

software pick   

DVDFab_blu_ray_copy_for_mac 12.0.0.3 Fengtao Software Inc.    

DVDFab Blu-ray Copy for Mac is the first full-featured Mac Blu-ray copier. Free download of DVDFab_blu_ray_copy_for_mac 12.0.0.3