Batch Video Compressor

Batch video compression is the process of reducing the file size of multiple video files in a single operation using shared compression settings. Our batch video compressoruses the browser's native MediaRecorder APIand Canvas API to re-encode each video locally — no server upload, no ffmpeg.wasm, no external libraries. Each video is decoded frame-by-frame, scaled to the target resolution via Canvas, and re-encoded at the specified bitrate using your browser's hardware-accelerated encoder. The batch video compressor processes files sequentially to avoid memory exhaustion, showing real-time progress for each file.

1. 1Add your videos: Drag and drop multiple video files (MP4, WebM, MOV, AVI) onto the drop zone or click to browse. Up to 20 files can be added at once. The batch video compressor reads metadata (duration, resolution) for each file — no data is sent to any server.
2. 2Choose shared settings: Select a bitrate (400 kbps to 4 Mbps), output resolution (original to 360p), and whether to remove audio tracks. These settings are applied uniformly to every file in the batch by the batch video compressor.
3. 3Download compressed videos: After the batch video compressor finishes, download individual files using the download icon next to each file, or download all compressed videos as a single ZIP archive. The summary table shows per-file and total savings.

• Video Bitrate: The primary lever for batch video compression. 2.5 Mbps is the recommended default for 720p content. 1.5 Mbps is suitable for 480p. Going below 400 kbps produces visible compression artifacts.
• Resolution Downscaling: Halving the resolution (e.g., 1080p → 540p) reduces pixel count by 75%, which is the single biggest lever for file size reduction in batch video compression.
• Audio Track: Removing audio tracks eliminates the AAC audio stream, which typically accounts for 5–15% of total video file size — useful for silent clips and video loops.
• Frame Rate: The batch video compressor captures at 30 fps. If your source videos are 60 fps, the output will be 30 fps, which further reduces file size across the entire batch.

The batch video compressor uses the browser's native MediaRecorder API, which processes video in real-time — a 5-minute video takes approximately 5 minutes to compress. For a batch of 10 five-minute videos, expect approximately 50 minutes of total processing time. Keep the browser tab active throughout. Chrome and Edge typically produce H.264/MP4 output; Firefox typically outputs WebM. For very long videos (over 15 minutes each), consider using the single-file Video Compressor tool instead.