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Comment by Keyframe

18 hours ago

with gemini-cli and claude-cli you can now prompt while it prompts ffmpeg, and it does work.

Yeah, you can give an LLM queries like “make this smaller with libx265 and add the hvc1 tag” or “concatenate these two videos” and it usually crushes it. They have a similar level of mastery over imagemagick, too!

  • Yeah, LLMs have honestly made ffmpeg usable for me, for the first time. The difficulty in constructing commands is not really ffmpeg's fault—it's just an artifact of the power of the tool and the difficulties in shoehorning that power into flags for a single CLI tool. It's just not the ideal human interface to access ffmpeg's functionality. But keeping it CLI makes it much more useful as part of a larger and often automated workflow.

Just seeking a clarification on how this would be done:

One would use gemini-cli (or claude-cli),

- and give a natural language prompt to gemini (or claude) on what processing needs to be done,

- with the correct paths to FFmpeg and the media file,

- and g-cli (or c-cli) would take it from there.

Is this correct?

  • Another option is to use a non-cli LLM and ask it to produce a script (bash/ps1) that uses ffmpeg to do X, Y, and Z to your video files. If using a chat LLM it will often provide suggestions or ask questions to improve your processing as well. I do this often and the results are quite good.

Curious to see how quickly each LLM picks up the new codecs/options.