Limelight
MP4 (MPEG-4 Part 14)
MP4 is a standard multimedia container format that packages compressed video and audio into one broadly compatible file.
MP4, formally MPEG-4 Part 14, is a container file format that holds video streams, audio tracks, subtitles, and metadata inside a single .mp4 file. It is a container, not a codec: the actual video is usually encoded with H.264 or H.265, while audio commonly uses AAC. This separation of container and codec is what makes MP4 so flexible and universal across devices and platforms.
When you play an MP4, the player reads the container index, locates each track, and hands the compressed streams to the appropriate decoders. Because H.264 support is nearly universal and hardware-accelerated on most chips, MP4 files play smoothly on phones, browsers, editors, and social platforms without conversion. That reliability is why MP4 is the default delivery format for most web and marketing video.
For screen recordings, MP4 is the safest export choice: it uploads cleanly to YouTube, LinkedIn, and X, and embeds anywhere. Limelight exports finished recordings as MP4 (or a vertical 9:16 MP4), so your polished, auto-zoomed demo is ready to share the moment editing is done.
Why Limelight
- ▸Container format, not a codec: MP4 wraps H.264/H.265 video and AAC audio.
- ▸Near-universal playback across browsers, phones, editors, and social platforms.
- ▸Excellent compression keeps file sizes small at high visual quality.
- ▸Limelight exports finished recordings as MP4, including vertical 9:16.
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FAQ
- Is MP4 a codec or a container?
- MP4 is a container. It stores video and audio streams that are themselves encoded by codecs such as H.264 or H.265, plus metadata, in one file.
- Why is MP4 the most compatible video format?
- Because H.264-in-MP4 has hardware and software support almost everywhere, so the file plays on virtually any device or platform without conversion.
- Does Limelight export MP4?
- Yes. Limelight exports your edited screen recording as an MP4, including a vertical 9:16 option for social platforms.