What does the Video Cutter / Trimmer do?
The Video Cutter / Trimmer exports a contiguous segment from one uploaded file. After you pick a video, the page creates a temporary object URL and probes duration through a hidden HTML video element’s metadata event; when that succeeds, the end field prefills to the formatted full length and you can tighten both bounds. Start and end values are parsed with the shared time helper so entries like 0:45, 90, or 1:02:03 map to seconds consistently. A clip length line updates from the difference while end remains greater than start and start stays non-negative. Output format toggles among Keep original, MP4, and WebM, and those choices are sent as outputFormat alongside numeric start and an end value that becomes null when you clear the end field after metadata (meaning use the detected end on the server). Trim Video stays disabled until the validation rule passes or while a job is in flight. Completion reuses the standard download card.
Limits and playback
One file per job with a five-hundred-megabyte dropzone cap—larger than the audio trimmer because video payloads are heavier. If metadata never resolves, duration reads Unknown until loaded and you should type an end time manually; otherwise the internal end timestamp may collapse to zero and the form will stay invalid. Whether the backend stream-copies or re-encodes is not exposed in this UI; forcing MP4 or WebM implies a transcode path when the source differs.
Privacy
Full video uploads to Dynamic Duniya for processing. Avoid confidential screen captures or rights-restricted content you cannot place on a third-party encoder.