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What is AVI?

AVI (Audio Video Interleave) is a legacy multimedia container format introduced by Microsoft in 1992.

What is VP9?

VP9 is Google's next-generation open-source video codec delivering 50% better compression than VP8 for 4K streaming.

When Should You Use AVI vs VP9?

Use AVI When...

Reach for AVI when your priority is legacy video, windows applications — its efficient compression makes sharing fast and storage minimal.

Use VP9 When...

Reach for VP9 when your priority is youtube 4k, web video, chrome streaming — its efficient compression makes sharing fast and storage minimal.

AVI vs VP9: Key Differences

  • •AVI uses lossy compression while VP9 uses lossy compression — both take the same approach to file size management.
  • •Since both AVI and VP9 use lossy compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •Alpha channel support: VP9 lacks transparency support.
  • •AVI files are typically Very large for uncompressed video while VP9 files range Smaller than H.264 at same quality
  • •Use case fit: AVI targets legacy video, windows applications and VP9 targets youtube 4k, web video, chrome streaming — your choice depends on which workflow stage you are serving.

Advantages of AVI

  • ✓At its core, AVI relies on lossy encoding — a design choice that makes it perfect for Legacy video, Windows applications.
  • ✓You won't run into compatibility issues with AVI — it's a universal standard across platforms.
  • ✓File size management with AVI: aggressive compression with minimal visible quality loss.
  • ✓Every major application in the Legacy video, Windows applications space supports AVI natively.

Advantages of VP9

  • ✓The lossy nature of VP9 means file sizes stay reasonable while handling YouTube 4K, web video, Chrome streaming efficiently.
  • ✓From mobile devices to enterprise servers, VP9 is recognized and supported everywhere.
  • ✓Storage and bandwidth costs drop significantly when using VP9 thanks to its efficient compression.
  • ✓VP9 is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for AVI to VP9 Conversion

  • Webinar recordings
  • Animated explainers
  • Video resumes
  • Conference presentations
  • Training tutorials
  • Customer testimonial videos

Industry Applications

Video ConferencingDigital SignageSports AnalyticsVirtual RealitySecurity SystemsAdvertising

Best Practices for AVI to VP9 Conversion

  • →For AVI to VP9: encode at the target platform's native resolution — upscaling or downscaling adds unnecessary artifacts
  • →Test a short clip before converting the entire AVI file — this confirms VP9 settings produce acceptable quality
  • →VP9 uses modern codecs that deliver great quality at lower bitrates — take advantage of this during conversion
  • →Use constant bitrate (CBR) for streaming delivery and variable bitrate (VBR) for archival storage
  • →Keep the original file in case you need to re-encode with different settings
  • →Check audio sync after conversion — container changes can sometimes cause drift

Related Article

Video Compression Guide: Reduce File Size Without Losing Quality

Learn more about AVI and VP9 formats in our detailed guide.

Troubleshooting AVI to VP9 Conversion

  • !VP9 won't play on target device → check codec compatibility (H.264 has broadest support)
  • !Audio out of sync after AVI to VP9 conversion → try re-muxing with a different container format
  • !VP9 quality is too low → increase the bitrate; for 1080p video, 8-15 Mbps is recommended
  • !File size increased converting AVI to VP9 → lossless or higher-bitrate outputs naturally produce larger files

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About AVI and VP9

AVI

AVI (AVI videos) - Audio Video Interleave, legacy video format. Best for legacy video, windows applications.

VP9

VP9 (VP9 video) - VP9, next-gen open-source video codec for 4K web video. Ideal for youtube 4k, web video, chrome streaming.

Format Comparison

CompressionLossy → Lossy
TransparencyN/A
Use CaseConvert from legacy video, windows applications to youtube 4k, web video, chrome streaming
File Size~Smaller than H.264 at same quality after conversion

FAQs

Is converting AVI to VP9 free?

Yes, GoConvertFile offers free conversion of AVI to VP9 for files up to 100MB. No registration required.

How long does it take to convert AVI to VP9?

Most AVI to VP9 conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is VP9 best used for?

VP9 is ideal for youtube 4k, web video, chrome streaming. VP9, next-gen open-source video codec for 4K web video

What file size should I expect after converting AVI to VP9?

File size after AVI to VP9 conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.

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Tune output for this video conversion
80%
Smaller fileBetter quality