Convert WebM to AVI — Free Online Converter
Convert WebM Video (.webm) to Audio Video Interleave (.avi) online for free. Fast, secure video conversion with no watermarks or registration....
2M+ ไฟล์ที่แปลงแล้ว
ผู้ใช้หลายพันคนไว้วางใจ
ถ่ายโอนอย่างปลอดภัย
อัปโหลดเข้ารหัส HTTPS
ความเป็นส่วนตัวมาก่อน
ไฟล์ถูกลบอัตโนมัติหลังการประมวลผล
ไม่ต้องลงทะเบียน
เริ่มแปลงได้ทันที
ใช้ได้ทุกที่
ทุกเบราว์เซอร์ ทุกอุปกรณ์
วิธีแปลง
Upload your .webm file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .avi file when it's ready.
About WebM to AVI Conversion
WebM is Google's modern open media container using VP8/VP9/AV1 video with Vorbis/Opus audio. AVI (Audio Video Interleave) is Microsoft's legacy multimedia container from 1992, using the RIFF format with DivX, XviD, MJPEG, or H.264 video paired with MP3 or PCM audio. Converting WebM to AVI bridges modern web video into legacy Windows workflows.
Why Convert WebM to AVI?
AVI remains required by VirtualDub, AviSynth, many industrial video systems, older set-top boxes, and legacy Windows applications that cannot parse Matroska-based containers or decode VP8/VP9 video. Converting WebM to AVI makes web video accessible to these legacy systems.
Some car entertainment systems and hardware media players from the DivX era only recognize AVI format, making this conversion relevant for personal media library compatibility.
Common Use Cases
- Loading WebM downloads into VirtualDub for frame-by-frame editing
- Playing WebM videos on hardware media players that only accept AVI format
- Converting WebM content for legacy car entertainment systems requiring AVI
- Preparing web video for industrial inspection systems that accept only AVI input
- Making WebM compatible with AviSynth filtering and processing workflows
How It Works
FFmpeg decodes VP8/VP9 video and Opus/Vorbis audio from WebM, then transcodes to XviD (MPEG-4 ASP), DivX, MJPEG, or H.264 in the AVI container. Audio is converted to MP3 or PCM since AVI does not support Opus or Vorbis. The RIFF-AVI structure uses interleaved audio/video chunks with an index for seeking.
Quality & Performance
Depends on the target AVI codec. XviD and DivX at adequate bitrates produce good results but are less efficient than VP9. MJPEG produces larger files with maximum compatibility. H.264 in AVI offers the best quality but limited legacy player support. At comparable quality, AVI files are typically 20-50% larger than the WebM source.
Device Compatibility
| Device | WebM | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | Partial |
| Linux | Partial | Partial |
| Web Browser | Native | No |
Recommended Settings by Platform
YouTube
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
TikTok
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Twitter/X
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Discord
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
Tips for Best Results
- 1Use XviD for the best balance of compatibility and compression for legacy systems
- 2Choose MJPEG for maximum compatibility with VirtualDub and industrial video tools
- 3Convert audio to MP3 at 192 kbps for good quality in the AVI container
- 4Consider MP4 instead of AVI unless the target specifically requires Microsoft's format
- 5Downscale to 720p if targeting legacy AVI players that may not handle higher resolutions
Related Conversions
WebM to AVI makes modern web video accessible to legacy Windows systems and hardware players that require Microsoft's container format.