Jpeg XS

[NumLock21]

The guys and gals over at the Jpeg group have just announced a brand new format call jpeg xs. This new format is designed for streamers, vr, ar, and more.What the jepg xs does, it lets high resolution files be sent with low latency over a mobile network like 5G.

 

Quote

 

Headed by Touradj Ebrahimi, a professor in EPFL's School of Engineering (STI), the JPEG XS format was essentially designed to stream live video and VR - it's not a replacement to JPEG, and file-sizes will actually end up being slightly bigger. The big push with this format is lower compression and decompression latency, as well as energy efficiency of the decompression process itself. The fact that it's open source and has a universal HDR coding format also means that its uptake should be relatively high.

 

 

https://www.techpowerup.com/243411/joint-photographic-experts-group-announces-jpeg-xs-format-for-streaming-scenarios

 

[Curufinwe_wins]

Interesting. Optimize in quite literally the other direction. Minimizing decode/encode instead of maximizing compression.

[Doobeedoo]

So minimizing compression and decompression latency. Yeah can be good for streamers. 

[AshleyAshes]

It might be important to clarify that this is being used as a MOTION picture format in an intra-frame compression scenario.  Similar to how Digital Cinema Packages use JPEG 2000 for each frame rather than and inter-frame compression solution like you see with H.264 or HEVC and such.

 

As such this is about pushing an image from encoding at Point A to decoded Point B as fast as possible, bandwidth is less relevant.

[MyName13]

So they will encode each frame separately?How is that efficient?

[bcredeur97]

should have been named "JPEG R" "JPEG VR" "JPEG AR"

literally anything other than "XS"

[AshleyAshes]

7 minutes ago, VegetableStu said:

oh interesting, so it's completely different from motion JPEG? o_o

In principal it's a LOT like MJPEG but built to basically be a lot 'faster'.  As the documentation said, low latency and power consumption.  Like imagine wireless VR, uncompressed video like you'd see in an HDMI cable is a TONNE of bandwidth so using a compressed data stream makes a lot more sense.  But compressed data means compression at one end and decompression at the other, that causes additional latency which is no good for VR, so this is about a format that can optimise for minimal latency.

[Guest]

This is great can't wait to use it in 5 years. 

[Zodiark1593]

15 hours ago, AshleyAshes said:

In principal it's a LOT like MJPEG but built to basically be a lot 'faster'.  As the documentation said, low latency and power consumption.  Like imagine wireless VR, uncompressed video like you'd see in an HDMI cable is a TONNE of bandwidth so using a compressed data stream makes a lot more sense.  But compressed data means compression at one end and decompression at the other, that causes additional latency which is no good for VR, so this is about a format that can optimise for minimal latency.

This would also be excellent for screen mirroring wirelessly from, let's say, an Android phone to the tv. Lower latency for gaming in this way.