mp4

.mp4 — MPEG-4 Video

Moving Picture Experts Group · 2001

开发者

Moving Picture Experts Group

分类

视频

MIME类型

video/mp4

首次发布

2001

开放格式

是

文件签名

66 74 79 70 (ftyp)

什么是.mp4文件？

MP4 (MPEG-4 Part 14) is the most popular video container format in the world. It can store video, audio, subtitles, and still images in a single file. MP4 typically uses H.264 or H.265 video codecs with AAC audio, delivering excellent quality at relatively small file sizes. It is the standard format for online video streaming, social media uploads, and digital video storage.

可以打开.mp4文件的程序

平台	程序
Windows	VLC Media Player	免费
	Windows Media Player	免费	官方
	PotPlayer	免费
macOS	QuickTime Player	免费	官方
	VLC Media Player	免费

.mp4文件的常见问题

⚠️ Cannot open .mp4 file

Install one of the recommended programs listed above. For a free option, try the first free program in the list.

⚠️ .mp4 file is corrupted

Try re-downloading the file. If the file was transferred, ensure the transfer completed without errors.

常见问题

What program opens .mp4 files?▼

.mp4 files can be opened with several programs. VLC Media Player is one of the most popular choices.

Is .mp4 a safe file format?▼

Generally yes, .mp4 files are safe to open with appropriate software.

Can I convert .mp4 to another format?▼

Yes, there are many online and offline tools available to convert .mp4 files. Check the conversion section above for specific methods.

技术详情

MPEG-4 Video files use the video/mp4 MIME type and were first introduced in 2001 by Moving Picture Experts Group. The file can be identified by its signature: 66 74 79 70 (ftyp).

你知道吗？

MPEG-4 Video was first released in 2001 by Moving Picture Experts Group

安全信息

.mp4 files are generally safe to open. However, always ensure your software is up to date to protect against potential vulnerabilities.