Convert ALAC to AVI — Free Online Converter
Convert Apple Lossless Audio Codec (.alac) to Audio Video Interleave (.avi) online for free. Fast, secure audio conversion with no watermarks or registration.
安全传输
HTTPS 加密上传
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文件处理后自动删除
无需注册
即刻开始转换
随处可用
任何浏览器，任何设备
如何转换
Upload your .m4a 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.
关于ALAC转AVI
ALAC stores lossless audio in Apple's M4A container. AVI (Audio Video Interleave) is Microsoft's legacy RIFF-based multimedia container from 1992, supporting MP3 and PCM audio. Converting ALAC to AVI decodes the lossless audio and wraps it in the legacy container.
This conversion bridges Apple's lossless ecosystem with legacy Windows/industrial AVI systems. Since ALAC is lossless, the AVI output benefits from perfect source material — PCM in AVI produces a lossless transfer.
为什么要将ALAC转换为AVI？
Legacy video editing tools, CCTV systems, and industrial media players require AVI format. Converting ALAC audio to AVI enables professional Apple recordings to enter these older systems.
Using PCM within AVI preserves the full lossless quality of the ALAC source, making this conversion completely lossless when uncompressed audio is chosen.
常见使用场景
- Preparing ALAC audio for legacy AVI-based video editing software
- Creating uncompressed AVI audio for industrial systems from lossless Apple sources
- Adding lossless audio to AVI video projects
- Converting Apple lossless recordings for AVI-based surveillance systems
- Building high-quality audio assets in AVI from ALAC masters
工作原理
FFmpeg decodes ALAC from M4A to perfect PCM, then writes to AVI as either PCM (lossless) or MP3 (lossy). AVI cannot contain ALAC natively. The lossless decode ensures optimal quality regardless of the AVI audio codec chosen.
质量与性能
PCM in AVI from ALAC is perfectly lossless — bit-for-bit identical to the original recording. MP3 in AVI introduces a single lossy step from perfect source material, producing optimal MP3 quality.
设备兼容性
| Device | ALAC | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
各平台推荐设置
Spotify
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Apple Music
Resolution: N/A
Bitrate: 256 kbps
AAC format required
SoundCloud
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Podcast
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
获得最佳效果的技巧
- 1Use PCM in AVI for lossless quality from your ALAC masters
- 2The lossless ALAC source produces optimal quality regardless of AVI codec choice
- 3Only convert to AVI when the target system specifically requires it
- 4For MP3 in AVI, use 320 kbps to maximize quality from your lossless source
- 5Test on the target legacy system before batch converting
相关转换
ALAC to AVI leverages lossless source quality for optimal legacy format output. PCM in AVI preserves the full ALAC fidelity.
ALAC 与 AVI 对比
| 特性 | ALAC | AVI |
|---|---|---|
| 全称 | Apple Lossless Audio Codec | Audio Video Interleave |
| 扩展名 | .m4a | .avi |
| 最适合 | Lossless | Windows native |