An AI agent cut the energy of 4K video transcoding by twenty-eight percent. That was in FFmpeg, a widely used video tool. Video pipelines convert every upload into many sizes and formats. They do it again and again, at huge scale. And they often run on default settings nobody has checked for energy. A small waste per minute adds up across a whole library. Here is the fix you can use today. First, measure the energy per minute of output, with your real presets. Then profile the hot paths of the encoder you actually run. Not just the settings, but the code doing the work. Keep only the changes that save energy with identical output quality. GreenCode researchers found an AI agent could cut this energy by twenty-eight point four percent. GreenCode's Constitution skill can help an AI coding agent find and fix this waste. Check each change using tools like the Constitution profiler, which records a command's energy. GreenCode helps tackle this by publishing the Constitution, so any team's agent can follow it. The agent profiles, fixes, measures again, and keeps only real savings. That was GreenCode Tech Tip number eleven. Follow for the next tip, and find more on greencode.ai/tech-tips.