A VERSIONING STRATEGY FOR SHORT CLIPS
Export one composition in a small matrix rather than changing everything between attempts. Start with 1080 x 1920 at 30 FPS, then compare 720p or 60 FPS only when the first version has a clean crop and a stable edge. This isolates the effect of each output decision and keeps the visual review understandable.
Use a file name with the template, source role, resolution, FPS, seed, and version. For example: torn-wipe-after-v3-1080-30-seed3817.mp4. The exact naming style can be yours; the important part is that a downloaded file still explains how it was made after it leaves the browser.
When a platform upload looks different, compare the local MP4, the editor export, and the private platform draft in that order. The first file that changes identifies the layer responsible for the difference. That sequence is quicker than re-rendering the paper animation without knowing whether the issue began during upload.
Keep the original browser export until the post is approved. A platform may create its own preview file, while the local MP4 remains the clean source for a different crop, a new sound, or a second platform. This is especially useful when the same paper animation needs separate TikTok, Reels, and Shorts uploads.
If the final file is larger than expected, inspect the duration and dimensions before reducing quality. A short 1080 x 1920 clip should remain manageable. A hidden duplicate track, an accidental long hold, or a second export at a larger canvas often explains the size more clearly than a bitrate change.
For a library workflow, keep one approved export preset per destination instead of tuning each file by feel. The Paper Animation project provides the visual composition; the editor or platform preset can handle the final delivery variation. That separation keeps a TikTok change from forcing a new paper render for every other channel.