BMP Won't Open? Convert to AVI Instantly
Fast, instant BMP to AVI conversion. No signup required. Just drop your .bmp file and get .avi in seconds.
Batch Settings
Quality reduction ahead
BMP is uncompressed, meaning every bit of data is preserved. AVI uses lossy compression — some data is permanently discarded to reduce file size. At high quality settings the difference is usually imperceptible, but the original data cannot be recovered.
Color depth reduction: 32-bit → 8-bit
BMP stores up to 32 bits per channel, but AVI supports only 8 bits. You may notice banding in smooth gradients (like sky or skin tones) where subtle color transitions are lost.
What compression artifacts to expect
AVI lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
您是否曾遇到这样的情况：手头有一堆精美的BMP图片，想把它们串联成一段生动的视频，却不知从何下手？无论是为了制作个人Vlog，记录游戏精彩瞬间，还是为公司年会准备创意开场，将BMP图片转换为AVI视频都是一个常见的需求。BMP格式以其无损画质著称，而AVI作为广泛支持的视频容器，能很好地承载这些高质量图像，并兼容多数播放器及编辑软件。我们的在线转换工具，正是为您解决这一痛点而生，操作简便，转换迅速，让您的静态画面瞬间“动”起来，轻松分享。
- 微信朋友圈短视频
- 游戏集锦制作
- 教学动画演示
在大陆和台湾地区，AVI格式因其良好的兼容性，在非专业视频编辑领域仍有广泛应用，尤其适合早期或配置较低的设备播放。新加坡用户则可能更倾向于转换为MP4以便于在移动设备和社交媒体上分享，但AVI在特定工业或医疗影像处理中依然占有一席之地。
About BMP to AVI Conversion
Dealing with a BMP file that won't open on your device? You're not alone — BMP compatibility issues are one of the most common reasons people search for a file converter. BMP is an uncompressed raster format that preserves every pixel but produces very large files.
The fix is simple: convert your BMP to AVI. AVI (Audio Video Interleave) is Microsoft's legacy video container, widely compatible but often large. This conversion lets you reduce file size without visible quality loss, solving the problem in seconds rather than hours of troubleshooting.
Full Name: BMP uses Bitmap Image, while AVI uses Audio Video Interleave. Compression: BMP uses None (uncompressed), while AVI uses Lossy. Transparency: BMP uses No, while AVI uses —. AVI lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
CocoConvert processes your BMP file on secure servers in Germany — upload, convert, download. Your files are encrypted via TLS and automatically deleted within 24 hours. No account needed, no software to install, and it works on any device with a browser.
This conversion is ideal when you Your BMP file is too large for email attachments or upload limits, or when you You want to reduce storage usage without noticeably affecting quality.
The conversion engine behind CocoConvert uses FFmpeg, Sharp, and qpdf — the same open-source libraries trusted by Netflix, YouTube, and enterprise platforms. Pro users can batch convert up to 100 files at once.
How to Convert BMP to AVI
- 1
Add your BMP file
Drag and drop your .bmp file into the converter, or tap "Browse" to pick it from your device. Multiple files are supported for batch processing.
- 2
Pick AVI output
Select .avi as the target format. CocoConvert automatically applies the best quality settings for this conversion.
- 3
Start conversion
Hit the Convert button. The image engine processes your file server-side — no CPU drain on your device.
- 4
Save your file
Once done, download your .avi file. For batch jobs, download all at once as a zip.
What Happens When You Convert BMP to AVI
Your BMP file is decoded and re-encoded as AVI.
Your BMP file is uploaded and the format is validated
The file content is decoded into its raw representation
The data is re-encoded in AVI format with optimal settings
The converted file is ready for download
BMP vs AVI — Detailed Comparison
| Feature | .BMP | .AVI |
|---|---|---|
| Full Name | Bitmap Image | Audio Video Interleave |
| Compression | None (uncompressed) | Lossy |
| Transparency | No | — |
| Animation | No | — |
| Color Depth | up to 32 bits/channel | 8-bit |
| HDR Support | No | No |
| Typical File Size | 10–50 MB per photo (uncompressed) | 100–500 MB per minute (uncompressed can be much larger) |
| Platform Support | Universal | Universal |
| Browser Support | Limited | none |
| Year Created | 1986 | 1992 |
| Open Standard | No | No |
Should You Convert BMP to AVI?
When to Convert
- ✓You need just the audio track from a video recording
- ✓You're creating a podcast or audio file from video content
- ✓You need maximum device and software compatibility
Frequently Asked Questions
Why won't my BMP file open?
BMP files may not open if your device lacks the right codec or application. Converting to AVI — a more widely supported format — usually resolves this. AVI (Audio Video Interleave) is Microsoft's legacy video container, widely compatible but often large.
Is it safe to convert BMP to AVI online?
Yes. CocoConvert encrypts your file via TLS, processes it on isolated servers in Germany, and permanently deletes it within 24 hours. Your files are never shared or analysed.
Will I lose quality converting BMP to AVI?
AVI lossy compression can produce codec-dependent. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes. CocoConvert uses high-quality encoder defaults to preserve as much fidelity as possible.
How large can my BMP file be?
Free users can convert files up to 250 MB each. Pro users get a 5 GB limit per file, and Business API users have custom limits.
Can I convert BMP to AVI on my phone?
Absolutely. CocoConvert works in any modern browser — iOS Safari, Android Chrome, and all desktop browsers. No app required.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.