Creator notes

Plan the frame, format, and export size.

Practical guides for the decisions that come before a video leaves your editing workspace.

FORMATS

MP4, MOV, and WebM: what the extension tells you

How container names, codecs, and browser support fit together.

FRAMING

Choose a frame ratio before editing

Plan landscape, vertical, square, or portrait dimensions before cropping.

ENCODING

Estimate bitrate from duration and size

Calculate a starting bitrate and account for audio and overhead.

PRIVACY

What browser-local video processing means

Understand object URLs, local previews, memory, and third-party requests.

How these notes are maintained

Each article describes the current Framewell tool behavior and identifies assumptions and limits. When a tool or external platform requirement changes, update the explanation and its date. Send corrections with the page URL and the statement to review.

These notes are not a substitute for a codec specification, an editing application, or current destination platform requirements.