源格式
AVI is an older video container whose playback support depends on the codecs inside it.
AVI
AVI is a file format supported by Convertr for online file conversion workflows.
M4A
M4A is a file format supported by Convertr for online file conversion workflows.
What happens when AVI becomes M4A
目标格式
M4A is an MPEG-4 audio container that commonly carries AAC or Apple Lossless audio.
什么变化
The audio stream is decoded from the AVI container and encoded as M4A audio.
The video track, frames, subtitles, chapters, and visual metadata are not included in the audio output.
- 保留了哪些内容
- Audio duration and channel layout are preserved when the source stream and target codec support them.
- What may be lost
- All visual content is intentionally discarded.
- Codec and quality implications
- Inspect the output before replacing the source, especially when the formats use different layout, codec, or editing models.
- Realistic limitations
- A AVI file with no decodable audio stream cannot produce M4A audio. Corrupt, encrypted, or unsupported codecs can also fail.
转型步骤
- Upload a AVI file no larger than 1 GB.
- Confirm that M4A is selected as the target.
- Start the conversion. A healthy compatible worker begins processing immediately.
- Download the M4A file and check the result before deleting your source.
麻烦解决
- The AVI file is rejected or will not open.
- Confirm that the file is not empty, password-protected, or corrupt and that its real format matches the extension.
- The M4A file is larger than expected.
- Choose a more efficient codec or lower quality setting when available. Lossless and uncompressed targets are often larger by design.
- The result has no sound or will not play.
- Try a broadly supported target codec and verify that the source contains a decodable audio stream.
隐私和文件保留
Uploads and converted files are processed automatically and irreversibly deleted within 24 hours. You can delete them sooner with the delete control. Convertr does not read, mine, sell, or manually review file contents.
Read the privacy policy