What are streaming service codecs, and why do they affect your picture quality?

Streaming services use codecs to compress large video files so they're playable over the internet. These codecs play a huge ...
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VideoChat3 beats GPT-5 on video grounding: Open-source, full training stack released

VideoChat3, a 4-billion-parameter open-source video AI model from Nanjing University, outperforms GPT-5 and Gemini 2.5 Flash ...