WEBVTT

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Does an MP4 filename tell you everything about a video?

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A video codec encodes and decodes the picture data stored inside a media container.

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Review the file and the actual player.
6 video-codec checks.

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Identify the video codec
Check which codec was used to encode the picture.
Video stream · Codec name · Export settings

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Identify the container
A container such as MP4 packages the encoded media streams.
Container format · Video stream · Other tracks

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Check target playback support
The actual browser or player must support the chosen combination.
Target player · Supported combination · Working playback

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Review the encoding settings
Resolution, frame rate and bitrate also affect the result.
Picture dimensions · Frame rate · Video bitrate

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Inspect the exported picture
Watch text, detail and motion in the actual output.
Readable text · Useful detail · Clear motion

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Test delivery as well
Review loading and playback through the intended website or host.
Actual host · Viewer connection · Playback result

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Your checklist
Identify the video codec · Identify the container · Check target playback support · Review the encoding settings · Inspect the exported picture · Test delivery as well

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Test the exported file in the browsers and players your viewers use.
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