Video workflow

Free video aspect ratio tools

Plan frame dimensions for widescreen, vertical, square and ultrawide video, then estimate the crop before reframing footage.

Video File Size Calculator

Estimate file size from bitrate and duration, or calculate a video bitrate budget for a size limit.

Calculate PAR, sample SAR, display aspect ratio and square-pixel export dimensions.

Calculate restored frame dimensions, lens squeeze ratios and an FFmpeg desqueeze command.

Calculate a matching width or height and compare common video resolutions.

Measure how much a landscape clip loses when converted to portrait, square or another shape.

Calculate black bars, active picture size and a ready-to-copy FFmpeg scale-and-pad command.

Compare adding canvas with a centered crop before reframing footage to a different ratio.

Compare common dimensions for 16:9, 9:16, 1:1, 4:3 and 21:9.

A common widescreen frame for web video, television and presentations.

A phone-first frame for stories, reels and short-form video.

A compact format that can work in feeds where horizontal space is limited.

Start with a 1920 × 1080 source and an example 1080 × 1920 output. Confirm the destination accepts that frame before editing.

Set a 9:16 sequence using the video dimensions calculator.
Compare choices: cropping retains only about 31.67% of this source's area after whole-pixel rounding; fitting with padding keeps the full source.
Apply the choice in your editor. Reposition a crop shot by shot; enlarging a landscape crop to fill 1080 × 1920 does not add source detail.
Check titles with the overlay workflow, then hide the guide before export.
If a file-size limit applies, follow the bitrate-budget example. Verify the actual file size and play the finished video, including its beginning and end.

Changing the frame dimensions does not automatically reframe subjects, correct pixel aspect metadata or choose suitable encoding settings.