Videos and pictures are taken by Thomas Klaube
(https://github.com/SteinscheisserKarl/) an Wolfgang Fahl
(https://github.com/WolfgangFahl/).

I switched to mp4 encoding as avi proved to be problematic in aspects of jumping to frames by index in opencv.
I created the mp4 files by: MP4Box -add file.h264 file.mp4. This is also much more space efficient.
Related project is:

https://github.com/WolfgangFahl/play-chess-with-a-webcam

License: CC BY-SA (see https://creativecommons.org/licenses/by-sa/4.0/ and https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Content:
chessgame_27.02.2020T1930.mp4 - Standard Tournament Game (Vereinsturnier 6. Runde SGem Vaihingen Rohr 2019/20)
chessgame_26.02.2020T1915.mp4 - Standard Tournament Game (Vereinsturnier 7. Runde SGem Vaihingen Rohr 2019/20 - startframe ~15200)
chessgame_20.02.2020* - Blitz tournament at SGem Vaihingen-Rohr on Feb. 20th 2020
chessgame_13.02.2020* - Casual games (including move takebacks and analysis)
chessgame_30.01.2020* - Casual games (including move takebacks and analysis)
chessgame_23.01.2020* - Casual games (including move takebacks and analysis)
SGVR_10_Jan_2020* - Casual games (including move takebacks and analysis)
TK_* - mock-up games with different resolutions (good for initial testing)
scholarsMate2019* - mock-up games with different resolutions (good for initial testing)
chessgame_2019* - mock-up games with different resolutions (good for initial testing)
chessVideo2019* - mock-up games with different resolutions (good for initial testing)