English ▾
繁體
简体
Español
Deutsch
Português
Free, Fast & Secure Online Tools
☰
Image Tools
Image Info
Image Resize
Image Convert
Image Optimize
Image Watermark
Image Merge
Crop Image
Image Flip
Image Rotate
Image Enhance
Image Split
Video Tools
Video Info
Video Compress
Video Trim
Video Merge
Video Convert
Video Storyboard Preview
Audio Tools
Audio Info
Audio Trim
Audio Convert
Audio Compress
PDF Tools
PDF Info
PDF Merge
PDF Compress
PDF Convert
PDF Split
PDF Create
Convenience Tools
Chinese Perpetual Calendar
Convert Chinese Words
Vertical Chinese Online
Help
FAQ
Tips & Knowledge
Privacy Policy
Terms of Services
About Us
Contact Us
Image Tools
Image Info
Image Resize
Image Convert
Image Optimize
Image Watermark
Image Merge
Crop Image
Image Flip
Image Rotate
Image Enhance
Image Split
Video Tools
Video Info
Video Compress
Video Trim
Video Merge
Video Convert
Video Storyboard Preview
Audio Tools
Audio Info
Audio Trim
Audio Convert
Audio Compress
PDF Tools
PDF Info
PDF Merge
PDF Compress
PDF Convert
PDF Split
PDF Create
Convenience Tools
Chinese Perpetual Calendar
Convert Chinese Words
Vertical Chinese Online
Help
FAQ
Tips & Knowledge
Privacy Policy
Terms of Services
About Us
Contact Us
Home
›
Tips & Knowledge
›
Video
Video
6 articles
Video
Codec vs Container: Why Your MP4 Won’t Play
MP4 is the box, not the contents. Two files with the same extension can be completely different inside — which is why on...
Nov 1, 2026
5 min
Video
What Is a MOV File? Apple’s QuickTime Video Format Fully Explained
MOV is a video container format developed by Apple using the QuickTime technology framework, identifiable by the .mov fi...
Oct 13, 2026
4 min
Video
What Is an MP4 File? The World’s Most Universal Video Format Explained
MP4 — formally known as MPEG-4 Part 14, with the file extension .mp4 — is the world's most widely used video container f...
Oct 13, 2026
4 min
Video
What Is a WebM File? Google’s Open-Source Web Video Format Explained
WebM is an open-source video format launched and actively promoted by Google in 2010, designed specifically for native v...
Oct 13, 2026
5 min
Video
What Is an AVI File? Microsoft’s Legacy Video Format Explained
AVI — Audio Video Interleave — is a video container format introduced by Microsoft in November 1992. Identifiable by the...
Oct 13, 2026
5 min
Video
What Is an MKV File? The Matroska Container Fully Explained
MKV — Matroska Video, using the .mkv file extension — is an open-source multimedia container format celebrated for its e...
Oct 13, 2026
4 min
