Get metadata about a video file: duration, resolution, fps, codecs, bitrate, file size.

Extract evenly-spaced frames from a video file as JPEG images. Returns the frames as base64 images that can be viewed directly. Useful for understanding what happens in a video over time.

Extract a single frame at a specific timestamp from a video file. Returns the frame as a base64 JPEG image.

Convert a video to a different container format and/or codec. Supports format changes (mp4, mkv, webm, avi, mov) and codec changes (h264, h265, vp9, av1). Quality can be controlled via CRF or target bitrate.

Cut a clip from a video by specifying start and end times. The output is re-muxed (not re-encoded) so it is fast and lossless.

Join multiple video files into a single file in the order provided. Files are concatenated without re-encoding (lossless, very fast). All input files must have the same codec and resolution.

Split a video into equal-duration segments. Segments are created without re-encoding (lossless). Output files are named with a _part_NNN suffix.

Extract the audio track from a video file and save it as a standalone audio file.

Remove the audio track from a video file, producing a silent video. The video stream is copied without re-encoding.

Change the audio volume of a video. The video stream is copied without re-encoding.

Resize a video to new dimensions. Provide width, height, or both. Omitted dimension is computed automatically to preserve aspect ratio.

Crop a video to a rectangular region defined by width, height, and top-left corner (x, y).

Rotate a video 90, 180, or 270 degrees clockwise.

Adjust brightness, contrast, and/or saturation of a video using the ffmpeg eq filter.

Burn a text string onto every frame of a video using the ffmpeg drawtext filter.

Speed up or slow down a video. Both video and audio are adjusted to match. Values > 1 speed up; values < 1 slow down.

Generate a contact-sheet image (JPEG) with evenly-spaced thumbnail frames arranged in a grid. Useful for getting a quick visual overview of a video.

Extract a subtitle track from a video file and save it as a standalone subtitle file.

Embed a subtitle file as a soft subtitle track inside a video container (the subtitles are selectable but not burned into the video frames). Supports mp4, mkv, and mov output.

Permanently burn (hard-code) subtitles into the video frames. The resulting video always shows the subtitles regardless of player settings. Requires re-encoding.