Photo & Video

AV Sync Fix

By Tranquillity Base

AV Sync Fix 调整MOV、MP4、M4V的播放时间信息以校正音画偏移。

View on the App Store Official website

Our take

适合兼容视频的同步修正

可拖动或输入数值预览，保存时不重编码。

Keep in mind: 需超过文件两倍空闲空间，不支持DRM、碎片MP4及QuickTime不能直接播放的源；保留原件。

Inside the app

Official product images

macOS · US App Store

What you can do

音画时间调整
数值与时间线
无重编码保存

Good for

有备份的本地视频用户

Consider alternatives for

需要修复任意损坏视频的人

Limitations & considerations

Captured minimum: macOS 13.5.
需超过文件两倍空闲空间，不支持DRM、碎片MP4及QuickTime不能直接播放的源；保留原件。

Privacy & permissions

会建立临时工作副本，敏感视频的输出与磁盘权限要管理。

Sources & review notes Updated Nov 15, 2026

Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.

US App Store developer description
Complete description, release notes, download price and compatibility metadata captured 2026-11-02.