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Sony's new XEVC codec is based on HEVC and can support 12-bit 8K RAW/4:4:4

Sony's new XEVC codec is based on HEVC and can support 12-bit 8K RAW/4:4:4

[18:38 wed,19.December 2018   by ]    

According to a recent rumour from Sonyalpharumors, Sony is working on a powerful successor to its XAVC codec that will support resolutions of up to 8K as well as RGB/YCrCb 4:4:44:4:4 im Glossar erklärt, RAW and LosslessLossless im Glossar erklärt compression.



In contrast to the current XAVC, the new XEVC codec is not based on the H.264 standard but on the newer H.265 (HEVC), more precisely apparently on H.265 Version 2 Profiles and will be used in Sony&s cameras like its predecessor.

The rumor seems extremely likely to us, as Sony would only follow the example of other camera manufacturers like Canon (with the new XF705) and Panasonic who already use H.265 for recording.

Sony-XEVC
Sony XEVC

CodecCodec im Glossar erklärt Variants
The obvious advantage of H.265 compared to H.264 codecs is the much higher efficiency: with the same picture quality, videos can be stored up to 50% smaller files. Videos compressed with H.265 require a low bit rate and consume less storage space compared to H.264 - which is especially important for videos with higher resolutions (such as 4K, 6K and 8K).

Like XAVC, XEVC defines different versions for different resolutions, bit rates, bit depths, color samples, and frame rates. XEVC&s capabilities go far beyond those of XAVC: they range from XEVC 2K Proxy with a resolution of 4:2:04:2:0 im Glossar erklärt FullHDFullHD im Glossar erklärt at 10-bit color depth and a top bit rate of 5 Mbps to XEVC 4K with 12-bit and RGBRGB im Glossar erklärt /YCrCb 4:4:44:4:4 im Glossar erklärt with 24fps and XEVC 8K with a resolution of 7.680 x 4,320 pixels, 12-bit, Bayer RAW at 24 fps at a peak bit rate of 240 Mbps (30 MB/s) - a bit rate that current (SD/CF) memory cards can easily support, making it a viable storage medium for XEVC. This bit rate can also be used to record 1080p1080p im Glossar erklärt at 240 fps. Also planned is a XEVC 4K proxy mode with only 24 Mbps and a 12-bit XEVC 2K lossless mode with 24fps at 240 Mbps bitrate.

It is already speculated on the net that the new 8K capable codec could be used for the first time in the Sony Alpha 7S II successor Sony A7S III or an updated version of the Sony FS7. Maybe even together with the new 8K sensor from Sony.



deutsche Version dieser Seite: Sonys neuer XEVC Codec basiert auf HEVC und kann 12-Bit 8K RAW?

    

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deutsche Version dieser Seite: Sonys neuer XEVC Codec basiert auf HEVC und kann 12-Bit 8K RAW?



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