The Ultimate Cheat Sheet on synthetic data
http://israelzzuf404.raidersfanteamshop.com/20-gifts-you-can-give-your-boss-if-they-love-synthetic-dataset
Considering the fact that HDMI can be a electronic signal, it can't be degraded Significantly prior to the picture and audio is not really longer decipherable. On analog alerts, you can obtain quite a bit of degradation