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8th October 2021, 22:34 | #42 | Link | |
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9th October 2021, 10:33 | #44 | Link |
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Konstantinos Konstantinides
, Co-authored a book on image, video, and audio compression. Answered February 18, 2016 Originally Answered: what is the best lossless video compression technique with the best compression ratio? Digital cinema uses lossless JPEG2000. More recently, H.265 added a lossless mode as well. Acoording to a 2012 paper (http://www.apsipa.org/proceedings_2012/papers/252.pdf ) Motion JPEG 2000 (using wavelets) appears to be slightly better than H.265. JPEG-LS is not that far behind either. |
9th October 2021, 10:35 | #45 | Link |
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Bob Hannent
, Playback and delivery architect at a large streaming company Answered January 22 HuffYUV and Lagarith are probably the best absolutely lossless codecs, you can compare their techniques. Although it's worth pointing out that just the way you transform the colour from RGB to YUV (or other colour formats) is a mathematically lossy process. With 4K and more affordable SSD storage there has been a rise in the use of RAW-ish formats but they are largely proprietary. But also most organisations don't want or need totally lossless, more visually lossless and that's why JPEG2000, JPEG-XS/XR and AVC-Ultra are very common formats for interchange in professional circles. There is a big difference between 2:1 compression which you might get with something like Huffman tables and the 10:1 or better that you can get with accepting the output won't be pixel for pixel identical as the source. |
10th October 2021, 10:40 | #52 | Link | |
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If using eg YV12 loaded into VirtualDub2 Full Processing mode, and saving as compressed YUV then will go through conversion to RGB and then to YUV and then compressed. So, there would be losses in colorspace conversions, but the compression itself is lossless. [Full Processing, mode converts to RGB for Vdub processing/filtering] Fast Recompress mode, will enter into negotiation between VDub and MagicYUV and come up with a strategy to avoid colorspace conversion, if possible. Above how it used to be, there is new VD2 Normal Recompress, not sure how that is different.
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I sometimes post sober. StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace "Some infinities are bigger than other infinities", but how many of them are infinitely bigger ??? |
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10th October 2021, 12:06 | #55 | Link | |
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10th October 2021, 12:29 | #57 | Link | |
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Also, I rarely use MagicYUV and only have the old free one that runs on XP. [I usually use Ut_Video, and again only the old XP compatible one]
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I sometimes post sober. StainlessS@MediaFire ::: AND/OR ::: StainlessS@SendSpace "Some infinities are bigger than other infinities", but how many of them are infinitely bigger ??? |
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