Resize MP4 Online

Start with the screen or placement where the MP4 will be used. Landscape suits widescreen players, portrait fits vertical layouts, and square works for balanced social compositions. Keeping the original ratio avoids distortion when no destination-specific frame is required.

• Use landscape for widescreen players and presentations.
• Choose portrait or square only when the destination needs that shape.
• Keep the original ratio when preserving the full composition matters.

Reducing resolution can lower the amount of visual data in an MP4, but it does not guarantee a particular file size. Duration, frame rate, motion, codec, and bitrate also matter. Use the video compressor afterward when an upload limit is the primary goal.

• Check faces, captions, and interface text after downscaling.
• Use Crop Video first when the new ratio needs a different composition.
• Use Compress Video when the final byte size matters more than dimensions.