FFmpeg Web

FFmpeg Web brings professional-grade video and audio processing capabilities right to your browser. Built on the powerful FFmpeg engine compiled to WebAssembly, this tool lets you handle common media tasks without installing any software or uploading files to external servers.

Why Choose FFmpeg Web?

Unlike traditional online converters that require you to upload your files to remote servers, FFmpeg Web processes everything locally on your device. Your videos and audio files never leave your computer, making it perfect for sensitive content or when you simply want faster processing without waiting for uploads and downloads.

Available Operations

1. Convert to YouTube MP4

Transform your videos into YouTube-ready MP4 format with H.264 video and AAC audio codecs. This ensures maximum compatibility with social media platforms, video players, and streaming services.

2. Merge Audio + Video

Combine separate video and audio files into one. Perfect for adding voiceovers, replacing audio tracks, or syncing separately recorded audio with video footage.

3. Trim Video

Remove unwanted sections from your videos by specifying precise start and end times. Cut out mistakes, remove intros, or extract the best moments with frame-accurate precision.

4. Normalize Audio

Fix videos with inconsistent or low volume levels. Audio normalization analyzes your content and adjusts levels to ensure consistent, clear sound throughout.

5. Create Shorts

Convert horizontal footage into vertical 9:16 format perfect for YouTube Shorts, Instagram Reels, and TikTok. Choose where to crop from - left, center, or right - to keep the important parts of your frame.

6. Extract Clip

Extract a specific portion of your video as a separate file. Ideal for creating highlights, sharing specific moments, or breaking long videos into shorter segments.

7. Fix Audio Sync

Repair lip-sync issues by adjusting audio timing. Delay or advance the audio track to match the video perfectly, fixing common recording and encoding problems.

8. Compress Video

Reduce file sizes while maintaining visual quality. Choose from multiple quality presets: High Quality (larger files), Balanced, Small Size, or Minimum Size depending on your needs.

9. Add Background Music

Mix background music with your video audio. Adjust volume levels for both the original audio and the music track to achieve the perfect balance.

10. Extract Audio

Extract audio tracks from video files in various formats including MP3, AAC, WAV, and FLAC. Perfect for creating podcasts, music files, or audio-only versions of your content.

11. Custom Command

For advanced users who need full control over FFmpeg parameters. Build your own custom FFmpeg commands with a visual argument builder.

How to Use Custom Command

The Custom Command feature gives you complete flexibility to run any FFmpeg operation. Here is how to use it:

Step 1: Add Your Files

Click "Add Another File" to add as many input files as you need. Each file is assigned a placeholder:

• $input[0] - Your first file
• $input[1] - Your second file
• $input[2] - Your third file, and so on...

Step 2: Build Your Command

Type each FFmpeg argument in the input field and press Tab or click Add to add it. Arguments appear as clickable tags - click any tag to remove it.

Step 3: Set Output Filename

Enter your desired output filename with extension (e.g., output.mp4, result.webm, audio.mp3).

Example Commands

Convert to WebM format:

-i $input[0] -c:v libvpx-vp9 -c:a libopus output.webm

Concatenate two videos:

-i $input[0] -i $input[1] -filter_complex concat=n=2:v=1:a=1 merged.mp4

Extract frames as images:

-i $input[0] -vf fps=1 -frame_pts 1 frame_%04d.png

Add watermark:

-i $input[0] -i $input[1] -filter_complex overlay=10:10 watermarked.mp4

Change video speed (2x faster):

-i $input[0] -filter:v setpts=0.5*PTS -filter:a atempo=2.0 fast.mp4

Privacy First

Your files are processed entirely within your browser using WebAssembly technology. Nothing is uploaded to any server, and your media content remains completely private. Once you close the browser tab, all temporary data is automatically cleared.

Browser Compatibility

For the best experience, use a modern browser like Chrome, Edge, or Firefox. These browsers fully support the SharedArrayBuffer feature required for optimal FFmpeg performance. Safari users may experience limited functionality.

Tips for Best Results

• Smaller input files process faster - consider the source file size before processing
• Close other browser tabs to free up memory for larger files
• Use the compression tool to reduce file size before other operations if working with very large videos
• For YouTube uploads, the "Convert to YouTube MP4" preset ensures maximum compatibility
• When using Custom Command, check the command preview to verify your arguments before processing