Video Splitter

Choose a split method

• Time ranges - add a start and end for each clip. Enter times as HH:MM:SS, MM:SS, or seconds. Click Add range to create a row. The icon-only controls titled Use current preview time fill a start or end field from the player's current time, and Remove range deletes a row.
• Fixed clip length - set a length in seconds and the video is cut into consecutive clips of that length; the final clip may be shorter, and is never dropped or padded to fill the gap.
• Marker timestamps - enter one timestamp per line, optionally followed by a label. Blank lines and lines beginning with # are ignored. Duplicate markers are removed. Markers at or before 0, or at or after the video duration, do not create interior cut points. These are your input; the tool does not detect scenes automatically.
• Embedded chapters - use chapters already stored in the file. Each chapter becomes one clip. This option is disabled when the file has no embedded chapters.

Split a video

1. Add one video through Drop a video here or browse files.
2. Choose a split method and enter its required values.
3. For time ranges, enter non-empty, valid values, make each end later than its start, and keep ranges separate and within the source duration. Marker mode requires at least one valid timestamp.
4. For clips that need re-encoding, choose MP4 (H.264 / AAC) or WebM (VP9 / Opus), then choose Low, Medium, High, or Very high. Choose Stream-copy when safe (fast, lossless), re-encode otherwise or Always re-encode using the settings above.
5. Review the automatically computed clip boundaries.
6. The clips are created automatically after valid settings are available.

Review processing and download results

The preview lists each computed clip with its start, end, duration, and available label. Each preview row also includes a control to seek the player to that clip's start. For one result, click Download clip. When several clips are created, click Download all as ZIP to package them together; there is no separate per-clip download control in that result view.

Output names use at least two digits, such as {basename}_clip01.ext. Chapter titles or marker labels can be included after sanitization. Stream-copied clips retain the source extension; re-encoded clips use the selected MP4 or WebM extension.

Quality and processing options

Stream-copy when safe (fast, lossless), re-encode otherwise makes the decision for each clip. A clip can be stream-copied only when its start is on or very near a source keyframe; otherwise it is re-encoded. Always re-encode using the settings above applies the selected format and quality settings to every clip.

The re-encoding controls are MP4 (H.264 / AAC) or WebM (VP9 / Opus), with quality choices Low, Medium, High, and Very high. The loaded-file summary can report the video codec, duration, dimensions, frame rate when available, audio presence, and embedded-chapter count.

Limits and first-use behavior

On first use, the browser may show Loading video engine (~30 MB, one-time download)... while it loads the video engine.

• An empty file can produce That file is empty. A file with no readable video track can produce Could not read a video track from this file. Unsupported or corrupt video data can produce Could not read this file - unsupported or corrupt video data.
• Time-range input rejects empty or invalid values, an end at or before the start, and overlapping ranges. The tool does not clamp ranges to the source duration, so keep every entered time within the video.
• Duplicate markers are removed. Markers at or before 0, or at or after the video duration, do not become interior cut points, so the result may not contain one additional clip per input line.
• The final fixed-length clip may be shorter; it is not dropped or padded to fill the gap.
• The tool does not merge clips or automatically detect scenes. It does not define a maximum file size, maximum duration, browser compatibility matrix, or guaranteed processing-time limit.

Frequently asked questions