Videos won’t play on iPhone or other mobile devices

Make sure you are serving an MP4/H.264 video file, as it is the only supported format on mobile devices.

Ensure that your MP4/H.264 video file doesn’t exceed the maximum resolution/bitrate supported by your mobile device.

Another widely supported format is HLS adaptive streaming.

Note: Video standards and formats are subject to updates. While MP4/H.264 and HLS remain widely supported, new codecs and streaming protocols may emerge over time. Always stay updated on the latest compatibility guidelines for optimal performance.