Upload the video
Import the video whose aspect ratio needs adjusting, or queue multiple clips together in a batch task.
Remove black bars and switch aspect ratios in one click, with AI subject tracking that keeps faces in frame when converting between landscape and portrait. Batch processing is supported, so one piece of content fits Douyin, WeChat Channels, YouTube, and more.
Download AIMIXPost landscape footage to Douyin and the screen fills with black bars; upload a portrait video to YouTube and only a narrow strip survives — aspect ratio is the first hurdle of multi-platform distribution. Video Crop handles black-bar removal, free ratio switching, and AI subject tracking for smart reframing, so one video works everywhere.
Import the video whose aspect ratio needs adjusting, or queue multiple clips together in a batch task.
Black-bar removal auto-detects and trims the top and bottom bars; ratio switching offers 9:16, 1:1, 16:9, and more; AI tracking keeps the subject centered so landscape-to-portrait never cuts off faces.
Preview the framing, then export — output several ratio versions at once so one piece of content covers every platform.

De fem manuskripter nedenfor er faktiske resultater fra AIMIX AI-manuskriptgenerering, skabt med prompten vist i hvert eksempel. De er genereret på kinesisk; tabellerne er oversat uden ændringer, og varighederne er som genereret. En scene uden genereret billedbeskrivelse er markeret med «—».
Best for: talking-head knowledge videos, courses, interviews · source footage in 16:9 landscape
结构Flow: landscape master → crop 9:16 / 1:1 / 16:9 versions → publish per platform
Multi-platform operation does not mean re-editing three times — it means cropping three times. AI tracking keeps the face centered in every landscape-to-portrait conversion, so the same content lands perfectly on each platform.
Each one maps to a different distribution need:
Auto-detects the active picture area and trims the top and bottom bars — a lifesaver for old footage and screen recordings.
Switch between 9:16, 1:1, 16:9, 4:3, and more, with precise output to each platform spec.
Subject recognition plus dynamic framing keeps people inside the safe area of the frame when flipping between orientations.
For multi-platform distribution, export multiple ratio versions in one go and skip the repeated exports.
Landscape-to-portrait framing is judged by AI segment by segment, and the frame follows the subject as people move.
Output the same video in multiple ratios at once and solve every platform spec in a single pass.
Convert an entire batch of footage to one target ratio — ideal for serialized, matrix-style production cadence.
No. Cropping trims an area of the frame at the same ratio without stretching the footage; pair it with background blur or similar effects when needed.
AI identifies the main subject in the frame (such as a face) segment by segment and dynamically adjusts the crop box, so the subject stays at the center of the composition after the ratio change.
Common ratios including 9:16, 1:1, 16:9, and 4:3, plus custom crop regions.
Yes. Set one target ratio for multiple videos and export them all in a single run.
Cropping only changes the visible area of the frame; resolution follows your export settings. Fewer effective pixels when cutting a portrait clip from landscape footage is normal.
Billing is per task as shown in the in-app prompt; batch tasks display an estimated cost before running.