Case study

CamLink 4K: replacement gateware and firmware for an Elgato capture card

CamLink 4K rebuilds the first-generation Elgato Cam Link 4K capture pipeline with LiteX gateware for its ECP5 FPGA and bare-metal C firmware for its FX3 controller. It documents the HDMI receiver, DDR3 frame buffer, GPIF-II link and USB UVC/UAC output, with host tools for flashing and validation.

Targets: Firmware
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08

Stars: 29
Last commit: 2026-11-02
Language: C
License (GitHub): BSD-2-Clause

GitHub data as of 2026-11-09

Copy as Markdown View JSON Cite

Requirements & limits

Prerequisites: First-generation Cam Link 4K hardware; back up its full SPI flash before replacing firmware.
Prerequisites: Linux host; LiteX, LiteDRAM, Migen, Yosys, nextpnr-ecp5, Project Trellis and arm-none-eabi-gcc for source builds.
Scope: The Cam Link 4K MK.2 and Rev.3 use different designs.
License: BSD 2-Clause licence.

Cite

BibTeX

@misc{camlink-4k-case,
  title = {{CamLink 4K: replacement gateware and firmware for an Elgato capture card}},
  howpublished = {\url{https://github.com/enjoy-digital/camlink_4k}},
  url = {https://github.com/enjoy-digital/camlink_4k},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/camlink-4k-case/}}
}

Plain text

CamLink 4K: replacement gateware and firmware for an Elgato capture card. https://github.com/enjoy-digital/camlink_4k (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/camlink-4k-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · enjoy-digital/camlink_4k · Revision 55bfaba
LICENSE GitHub · enjoy-digital/camlink_4k · Revision 55bfaba