Visual stability: All shots should demonstrate appropriate camera support and use of image stabilization. If shakiness in the shot is a design aesthetic, then we moderate the file based on that merit. Stabilization in post-production is acceptable if it does not detract from the quality of the image.
Audio: Remove audio that is unusable, such as over-modulated audio or sound that could be trademarked. It is perfectly acceptable to submit clips without audio. If your clip contains audio of human voices, a model release is required for each voice.
Rolling Shutter Artifacts: Shots containing minor rolling shutter artifacts are accepted or declined based on the judgment of the moderation team. Shots containing wobble or “jello” artifacting will be declined. Shots containing skew artifacts will be judged on how obvious, disruptive, or distracting the artifact is to the beauty or effectiveness of the image. Shots containing flash banding are not acceptable and will be declined.
Logarithmic gamma (log) footage: Footage shot in log should have a simple color grading applied—a basic Rec 709 LUT is recommended.
Up-res Footage: Do not up-res footage (for example, from HD to 4k). Submit footage as shot or smaller, if necessary. Shoot in 4K where possible.
https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html