Video Bitrate Changer

Change video and audio bitrate with preset values or custom settings, supporting both CBR and VBR modes

Related Tags
Audio 254 Compression 108 Video 80

Click to upload file or drag and drop file here

Maximum file size: 500MB Supported formats: video/*

Video bitrate in kilobits per second (100-50000)

Audio bitrate in kilobits per second

Key Facts

Category
Images, Audio & Video
Input Types
file, select, number
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Video Bitrate Changer allows you to easily adjust the video and audio bitrate of your media files to optimize file size and playback quality. Supporting both Variable Bitrate (VBR) for superior quality and Constant Bitrate (CBR) for predictable file sizes, this tool offers flexible presets alongside custom bitrate controls, multi-pass encoding, and multiple output formats like MP4, WebM, and MKV.

When to Use

  • •When you need to compress large video files to meet strict upload size limits for websites, email, or messaging apps.
  • •When you want to optimize video streaming performance by adjusting the bitrate mode to VBR or CBR.
  • •When you need to standardize the audio and video bitrates of multiple media assets for consistent playback across different devices.

How It Works

  • •Upload your video file (up to 500MB) in formats like MP4, WebM, MKV, AVI, or MOV.
  • •Select a predefined bitrate preset or enter custom video and audio bitrate values in kbps.
  • •Choose your preferred bitrate mode (VBR or CBR), encoding passes (Single or Two Pass), and output format.
  • •Click the process button to re-encode the video and download the optimized file.

Use Cases

Compressing high-resolution camera footage to a mobile-friendly 800 Kbps preset for quick sharing.
Preparing stable streaming videos by encoding them with Constant Bitrate (CBR) and a standard 2.5 Mbps preset.
Maximizing video quality for archival purposes using Two Pass encoding, VBR mode, and a custom high bitrate.

Examples

1. Optimizing Video for Mobile Web Delivery

Web Developer
Background
A developer needs to embed a product demonstration video on a landing page, but the original file is too large and causes slow page load times on mobile networks.
Problem
The video file size needs to be reduced drastically without making the video look pixelated on small screens.
How to Use
Upload the MP4 video, select the 'Mobile (800 Kbps)' bitrate preset, set the audio bitrate to 96 kbps, choose VBR mode for better quality distribution, and select MP4 as the output format.
Example Config
Preset: Mobile (800 Kbps), Audio Bitrate: 96 kbps, Mode: VBR, Passes: 1, Format: MP4
Outcome
The video file size is reduced by over 70%, allowing fast loading and smooth playback on mobile devices.

2. Preparing Video for Constant Bitrate Streaming

Content Creator
Background
A creator wants to upload a tutorial video to a platform that requires a stable, predictable stream bandwidth to prevent buffering.
Problem
Variable bitrates cause spikes in bandwidth usage, leading to playback stuttering for viewers with slower connections.
How to Use
Upload the video, choose the 'Standard (2.5 Mbps)' preset, set the bitrate mode to CBR (Constant Bitrate), select Two Pass encoding for optimal quality, and export as WebM.
Example Config
Preset: Standard (2.5 Mbps), Mode: CBR, Passes: 2, Format: WebM
Outcome
The output video has a perfectly stable bitrate profile, ensuring smooth streaming performance without buffering.

Try with Samples

audio, video, file
Video Samples
Sample video files in different formats and orientations
title token video
video
Video AV1 Samples
Sample video files encoded in AV1 format
title token video
video
Video H.264 Samples
Sample video files encoded in H.264 (AVC) format
title token video
video
Video H.265 Samples
Sample video files encoded in H.265 (HEVC) format
title token video
video

Related Hubs

Audio Encoding and Format Conversion Tools
Compare audio format conversion, bitrate changes, sample-rate conversion, codec swaps, and export tools in one hub for delivery and archive workflows.
Audio Editing and Cleanup Tools
Compare audio trimming, silence removal, fades, mixing, and denoise tools in one hub for podcast, voiceover, and music cleanup workflows.
Video-to-Audio and Animation Conversion Tools
Compare tools that turn video into audio, extract video streams, and convert between short-form video and animated image formats in one hub.
Video Preview, Extraction, and Subtitle Tools
Compare video preview generation, stream extraction, audio extraction, subtitle translation, and quick flip tools in one hub for lightweight video prep workflows.

FAQ

What is the difference between VBR and CBR modes?

VBR (Variable Bitrate) adjusts the bitrate dynamically to deliver higher quality for complex scenes, while CBR (Constant Bitrate) maintains a steady bitrate for predictable file sizes and streaming stability.

What is the maximum video file size supported?

You can upload and process video files up to 500 MB in size.

Why should I choose Two Pass encoding over Single Pass?

Two Pass encoding analyzes the video in the first pass and applies optimal compression in the second, resulting in significantly better visual quality at the same target bitrate.

Can I change the audio bitrate independently of the video bitrate?

Yes, you can customize the audio bitrate from 32 kbps up to 320 kbps while separately configuring the video bitrate.

Which output formats are supported by this tool?

The tool supports exporting your processed video to MP4, WebM, MKV, AVI, and MOV formats.

API Documentation

Request Endpoint

POST /en/api/tools/video-bitrate-changer

Request Parameters

Parameter Name Type Required Description
videoFile file (Upload required) Yes -
bitratePreset select No -
customVideoBitrate number No Video bitrate in kilobits per second (100-50000)
audioBitrate number No Audio bitrate in kilobits per second
bitrateMode select No -
pass select No -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/video-bitrate-changer to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-video-bitrate-changer": {
      "name": "video-bitrate-changer",
      "description": "Change video and audio bitrate with preset values or custom settings, supporting both CBR and VBR modes",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=video-bitrate-changer",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]