An hour of video streaming emits 36 gCO2 according to the International Energy Agency (worldwide, 2019, electricity only), about 55 gCO2e according to the Carbon Trust (Europe, 2020, electricity only) and 64 gCO2e according to ADEME's reference value, which includes the manufacturing of the devices. The figure depends on the screen, the network and the country's electricity. In high definition on Wi-Fi, our calculation with the ADEME model gives 71 g on a television, against 58 g on a phone.
Read the source article: TikTok carbon footprint: 36 to 64 gCO2e per hour of video