Review a render

You can't watch the video, but you can look at it. The review tool writes images of labelled frames (scene id, in/mid/out, time) to qa/review/ and returns their paths in images (image is the first). Each image stays within the ~1568 px vision limit so labels stay readable: a long video's contact sheet is split into sheet-<quality>-p1.jpg, -p2.jpg, …, three frames per scene, and pages says which scenes (and which flagged scenes) each image holds. Read every image, flagged ones first.

1. Contact sheet first

mcp__plugin_video-studio_engine__review {project_dir} (the latest render; quality to choose). Review runs lint on the same render first: tiles of scenes with findings get a red (error) or amber (warning) border, and the result's flagged list names each scene's findings (e.g. s03: text_overflow (error)). Look at the flagged tiles first and confirm each finding by eye (the result's pages[].flagged says which image they are on); then check every scene:

• Text: fits its box, readable at phone size, nothing cut off, no stray characters (e.g. a number glued to its unit).
• Placement: nothing under the captions or the platform UI.
• Completeness: by mid the scene's graphic is fully on screen; out shows the settled end state.
• Footage: crops keep the face or subject; redactions cover what they should.
• Rhythm: consecutive scenes look different enough (a visual change every 2-4 s), and the hook's first frame already says something.

2. Look closer where something is off

• mode: "strip", scene: "<id>": every frame of that scene. Use it for motion (push_in, punch, reveal), transitions, count-ups, and word cues: a cued item should appear as its word is spoken. The strip labels the tile nearest each placed cue with cue "<word>" (also in the tile's cues); check the item is appearing on that tile. Unplaced cues show up as cue_unmatched flags. A long span is sampled evenly up to 48 frames; narrow it with from_sec/to_sec for every frame.
• transitions: true: one tile at the middle of every transition, labelled s02→s03 crossfade @ 12.40s (its transition field gives the kind and length). Cuts get no tile. Tiles use the render's scene slots and the length the assembly actually used: the scene's transition, else the style's default, capped at 40% of the incoming scene and 1.5 s, and a cut when that is under two frames. At the middle both scenes are half visible. Check that the blend reads: no two blocks of text on top of each other, no flash, no half-built layout. A busy blend wants fade_black, a cut, or a stagger (old content out, then new in). Add scene to see only the transitions into and out of one scene, and use a strip over a transition to see every frame. stills can't show transitions: they are drawn at assembly.
• mode: "crop", crop: {x, y, w, h} (fractions of the frame) with times: full-resolution detail such as the caption band ({x: 0, y: 0.65, w: 1, h: 0.25}), small labels or a face.

3. Report or fix

List what you found per scene, most visible first, with the fix in spec terms (shorter on_screen_text, a different motion, footage.focus, a cue on a later word). When the user asked you to fix things (or you are in the render or create flow), edit the spec, re-render (only changed scenes re-render) and review again. Don't claim a render looks right without having Read every image of the review. To let the user watch two versions (preview and final, or before and after a fix) in sync, suggest the compare skill.