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Re:Launch HN: Mosaic (YC W25) – Agentic Video Editing by adishj on Thursday November 20, 2025 @02:25AM (#45989905)
since we're building on top of LLMs which are by nature probabilistic, you won't produce the exact same frame-level cut each time, but of course there is still determinism in the expected outputs

for example, if you have a workflow setup to create 5 clips from a podcast and add b-rolls and captions and reframe to a few different aspect ratios, any time you invoke this workflow (regardless of which podcast episode you're providing as input), you'll get 5 clips back that have b-rolls, captions, and are reframed to a few different aspect ratios

however, which clips are selected, what b-rolls are generated, where they're placed — this is all non-deterministic

you can guide the agent via prompting the tiles individually, but that's still just an input into a non-deterministic machine

Re:Launch HN: Mosaic (YC W25) – Agentic Video Editing by satvikpendem on Thursday November 20, 2025 @02:37AM (#45989974)
Or just let the user adjust the seed and temperature themselves, or hide it under a checkbox that says deterministic with your chosen seed and temperature.
Re:Launch HN: Mosaic (YC W25) – Agentic Video Editing by adishj on Thursday November 20, 2025 @02:56AM (#45990100)
good point — we could enable these more granular-level knobs for users if it seems to be something people want