Video tempts makers to skip the tracing they would never skip on a still. The clip moves, the movement flatters it, and the finishing credits are spent before anyone has asked the plain question: can this clip be followed back, frame by frame, to the still it was made from? An upscaler raises resolution, not fidelity. If the trace breaks at second three, full scale will only present the break more clearly. Follow the clip back first, at working size, where a failed judgement costs nothing.
Three passes, three questions
First pass — the character. Watch at full speed with the route card beside the screen. Hair, face and signature should hold through the movement, not just in the first frame the still supplied. Most drift arrives mid-turn, when the model is busiest inventing.
Second pass — the joins. Hands entering and leaving frame, hair crossing the face, fabric edges against the background, the moment light changes. Transfers and animations strain exactly at joins, so the joins are where an honest trace is taken.
Third pass — the loop point. If the clip will loop, watch the seam five times in a row. A gesture that reads cleanly once can stutter at the join, and the seam is the part a viewer’s eye learns fastest.
Then, and only then, scale it
A clip that can be followed back across all three passes has earned the finishing stops: a face held by the video swap where casting drifted, or the video upscaler at the destination’s size for a paid tier. A clip that fails goes back to the still — because in this studio the still is where character is decided, at 6 credits, and motion is only ever a pass over a frame that already stayed on route. That ordering, kept consistently, is the whole cost discipline of video: trace cheap, finish dear, never the other way round. Write the three readings down beside the clip, even when they pass, because the notes from a clip that nearly failed are the brief for the next one.