SoC

Design Ideas

FPGA Theora compressor

In 2005 Elphel implemented a subset of Theora video encoder encoder in Xilinx® FPGA that is part of Elphel model 333 camera capable of compressing 1280x1024@30fps ([1], [2]), but the CPU in the camera was not fast enough for the job even when the hard part was made by the hardware. In model 333 camera software was responsible for generating frame headers and Ogg encapsulation of the Theora bitstream provided by FPGA. Knowing that Axis Communications AB were going to release a new faster processor we decided to wait for it before proceeding with Theora in the camera and used plain old Motion JPEG for a while.

Now we have the the new camera 353 tested and released to production - the camera that has a brand new FS, more memory and larger FPGA and is already tested in JPEG mode. So now it is a perfect time to resurrect Theora code in the camera and move forward.

In the current