bythomas12-04-201207:23 AM - edited 11-01-201601:41 PM
Playback on iOS devices such as iPads and iPhones can be done in one of two ways: Adaptive Bitrate (ABR) or single stream. iOS ABR is done through a format called HLS. It allows the quality of the stream to dynamically respond to the available bandwidth.
Our system does not allow both height and width to be specified; we maintain the aspect ratio based on the width settings. If videos are ingested with non-standard aspect ratios and scaled to a width of 640 for iPhones, the height might be outside the limitations. To avoid this, make sure to adjust the width so the maximum height is not exceeded.
If the video will be used in an iPhone or iPad app, you must also provide a stream below 64kbps. To support this, we offer an audio-only stream option.