You’ll build a new app for all those travel vloggers out there.
#Setting up iphone with mac for live streaming video how to#
That’s right, it’s time to take your app to the next level and learn how to add video streaming! :] That’s an impressive list of accomplishments to be sure, but… Maybe even pull in some JSON and put together a decent table view with cells that have text and images. Yeah, you can probably do some basic networking.
You’ve been working on iOS apps for a while now and you think you’re pretty slick. Generally these files will be generated for you.Update note: Saeed Taheri updated this tutorial for iOS 14 and SwiftUI. The MPD file tells the browser where the various pieces of media are located, it also includes meta data such as mimeType and codecs and there are other details such as byte-ranges in there too. Once you have generated your MPD file you can reference it from within the video tag. ElephantsDream_AAC48K_ ElephantsDream_H264BP元0_ ElephantsDream_H264BP元0_ ElephantsDream_H264BP元0_ ElephantsDream_H264BP元0_ *SIDX or SegmentIndexBox is a structure describing a segment by giving its earliest presentation time and other meta-data and can often make up a large portion of the MPD file. You can use the same media files for both live transmission and VOD at a later stage.You want to use the original files for both DASH and other forms of delivery (such as Microsoft Smooth Streaming) as a transition strategy.The SIDX* is large and having to load it first slows down startup a little.Your server cannot prefetch range requests efficiently.Your server cannot cache range requests efficiently.Your client or server does not support range requests.Other reasons to use LIVE profile over Ondemand for VOD content may be: The stream switching capabilities are identical between the profiles. We're going to take a look at Ondemand profile for Video On Demand (VOD) and the LIVE profile.įor live services streaming, the LIVE profile is a requirement. The MPD file tells the browser where the various pieces of media are located, it also includes meta data such as mimeType and codecs and there are other details such as byte-ranges in there too - it is an XML document and in many cases will be generated for you. In your video source (src) attribute you point to the MPD instead of to the media file as you would with non-adaptive media. MPEG-DASH is an adaptive bitrate streaming technique that enables streaming of media content over the Internet delivered from conventional HTTP web servers.Ī media presentation description (MPD) file is used to hold the information on the various streams and the bandwidths they are associated with. Various bitrate streams are broken into segments and placed in appropriate server folders - we have to provide our media players with a link to lookup files or playlists specifying the name and location of these stream folders. For adaptive streaming over HTTP, no special server-side components are required.īoth MPEG-DASH and HLS use a playlist format to structure the component piece of media that make the possible streams. The good news is that once we have encoded our media in the appropriate format we are pretty good to go.
The more qualities and time points there are, the more 'adaptive' your stream will be, but we will usually want to find a pragmatic balance between size, time to encode and adaptiveness. We are required to provide several different quality files split up over several time points. In order to adaptively stream media we need to split the media up into chunks. In terms of adaptive streaming formats, there are many to choose from we decided to choose the following two as between them we can support most modern browsers.
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