Convert Advanced Audio Coding (.aac) to Audio Video Interleave (.avi) online for free. Fast, secure audio conversion with no watermarks or registration.
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AAC is a pure audio codec, while AVI (Audio Video Interleave) is Microsoft's classic multimedia container introduced in 1992. Converting AAC to AVI creates a video file with a static or blank video track and the audio content as the soundtrack. This unusual conversion is used when software or hardware strictly requires AVI input — such as legacy video editing programs or industrial media players that cannot import standalone audio files.
Some legacy video editing software, industrial display systems, and embedded media players only accept AVI files. If you need to include audio in a timeline or playout system that rejects standalone audio formats, wrapping the AAC stream in an AVI container with a blank video track is the practical workaround. This also enables using audio files in video production pipelines that expect a video container.
FFmpeg wraps the AAC audio stream in an AVI container, optionally adding a blank black video track (1 fps, minimal resolution) to satisfy players that require a video stream. If AVI compatibility mode is required, the audio may be transcoded to MP3 or PCM, since not all AVI decoders support AAC audio. The output file size depends on whether a video track is added and what audio codec is used.
When the AAC stream is copied directly into AVI, quality is identical to the source. If transcoding to MP3 is needed for legacy AVI player compatibility, expect minimal quality loss at 192+ kbps. The optional blank video track adds negligible file size (about 1 KB/second at 1 fps).
| Device | AAC | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
AAC to AVI is a niche conversion for legacy systems that demand the AVI container. Modern workflows should use MP4 or MKV instead, but when AVI is the only option, this conversion gets the job done with minimal fuss.
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| No |
| Egenskap | AAC | AVI |
|---|---|---|
| Fullt navn | Advanced Audio Coding | Audio Video Interleave |
| Filendelse | .aac | .avi |
| Best egnet for | Superior to MP3 | Windows native |