Format Atlas

Guides

Choose a video distribution format

Choose the container and the codecs inside it according to the playback destination and production workflow.

Which format should you choose?

Choose by the role each file plays in your workflow.

  • General delivery → consider MP4
  • Known web playback environment → consider WebM
  • Keep multiple subtitle or audio tracks → consider MKV

Do not decide from the extension alone

MP4, MOV, MKV, and WebM are containers. Playback support and file size also depend on the video and audio codecs stored inside.

Formats to consider

MP4

Good for: Video intended for broad playback and delivery

Less suitable for: Handoff without checking the codec

WebM

Good for: Video with defined web playback requirements

Less suitable for: Use without checking editing tools or devices

MOV

Good for: Production in QuickTime-oriented workflows

Less suitable for: Delivery without confirming general playback

MKV

Good for: Storing multiple audio or subtitle tracks

Less suitable for: Simple delivery to a broad audience

Before you export

  • After conversion, check re-encoding and retention of subtitles, chapters, and multiple audio tracks.
  • MP4 is a container, not another name for H.264.

Related comparisons

MP4 vs WebMMP4 and WebM are containers for audio and video, not single codecs. MP4 is widely used across devices and services; WebM is a Matroska-based subset associated with web delivery. Size and quality depend on the encoded streams, settings, and playback environment.MOV vs MP4MOV and MP4 are container formats, not video codecs. MOV is common in QuickTime-oriented capture and editing workflows, while MP4 is widely used for general distribution. Playback depends on the actual video and audio codecs inside the file.MKV vs MP4MKV and MP4 are containers that can hold video, audio, subtitles, and metadata. MKV often supports a flexible mix of tracks, while MP4 is widely used for delivery across devices and services. Compatibility depends on the codecs and track features inside the file.

Guides

Choose an audio distribution formatFor delivery, check the listener's playback environment as well as file size and whether the source must remain available.Checking an HLS or DASH package before handoffInventory referenced media and delivery conditions, not just playlists or an MPD, then verify playback, seeking and track switching at the destination.

File format basics

Container vs codec

References and specifications