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Choose high bitrate when preserving detail for further editing matters; consider standard for lighter drafts after checking the result. Neither choice fixes an incorrect subject or broken movement. The useful question is whether compression is hiding detail your audience needs, and whether the final delivery preserves it.
What changed on Runway Dev
Runway's October 27, 2026 API changelog adds a bitrate setting for Seedance 2.0, Fast and Mini across text-to-video, image-to-video and video-to-video. Its API default is standard. This is an output setting update, not a new Seedance model release.
The Runway app guide lists high as the app default. Check the surface you actually use: an app preset and an API default can differ. This announcement does not establish that Tong exposes the same control.
Separate bitrate from resolution and motion
Resolution describes the frame's pixel dimensions. Bitrate describes the amount of encoded data over time. Two files with the same dimensions can therefore retain different amounts of fine detail. A larger file alone is not proof of a better image, and increasing bitrate cannot recover content that was never generated correctly.
During review, distinguish compression from generation errors. Soft fabric texture may be an encoding issue; a sleeve changing shape between frames may be a motion or consistency issue. Judge the action at normal speed before examining individual frames. Otherwise, a crisp still can distract from an unusable shot.
Use a short inspection brief
For a planned evaluation, try a fixed shot of a plain scarf moving gently beside a window. Ask for one motion and stable lighting. Inspect the cloth edge, the shadow gradient and detail during movement. This is a proposed exercise, not a reported model test or a promise of a particular result.
Keep duration, dimensions, references and prompt consistent where possible. Record the selected bitrate and compare downloaded originals at the same viewing size. Separate generations can differ creatively, even with similar settings, so avoid attributing every difference to compression. Note uncertainty rather than declaring a winner from one pair.