AVfoundation media framework then downloads the m3u8 playlist which contains your content key. The media framework will then request the key from the media framework delegate built into the app. The app delegate then responds to the media framework to make a request from the FairPlay Streaming Server. The media framework delegate then provides the key response to the media framework.
The source devices relays encryption data between the devices and Apple TV.
Call us: 1. Key Benefits. What is FairPlay Streaming? A delivery mechanism for secure keys that are protected on both the network and client Delivery of keys is server agnostic and can work with existing key infrastructure, streamlining implementation.
AVfoundation media framework then downloads the m3u8 playlist which contains your content key 3. The app delegate then responds to the media framework to make a request from the FairPlay Streaming Server 5. When the search is completed the Key Security Module applies the content key 8. The media framework delegate then provides the key response to the media framework 9. The content is now decrypted and the app and device can execute playback.
Help Center. Recent Posts. Ludicrously Fast Video Processing Encoding.Encryption is the process of encoding information in such a way that only authorised parties can read it. The encryption process requires some kind of secret key together with an encryption algorithm. The Advanced Encryption Standard AES is an example of a block cipher, which encrypts and decrypts data in fixed-size blocks.
AES uses a key length of bits 16 bytes. This means each block is encrypted using the cipher text of the preceding block, but this gives us a problem: how do we encrypt the first block? There is no block before it!
To get around this problem we use what is known as an initialisation vector IV. This instructs OpenSSL to generate a random byte value, which corresponds to the key length bits. The next step is to generate an IV. This step is optional. If no value is provided, the segment sequence number will be used instead. To encrypt the video we need to tell ffmpeg what encryption key to use, the URI of the key, and so on. The file must be in the following format:. The first line specifies the URI of the key, which will be written to the playlist.
The second line is the path to the file containing the encryption key, and the optional third line contains the initialisation vector. It should look something like this:. Note the URI of the encryption key. The player will retrieve the key from this location to decrypt the media segments. You may also want to implement some of authentication mechanism to restrict who has access to the key. Click here to buy a copy.
To verify that the segments really are encrypted, try playing them using a media player like QuickTime or VLC.Digital rights management DRM schemes are various access control technologies that are used to restrict usage of proprietary hardware and copyrighted works.
DRM technologies try to control the use, modification, and distribution of copyrighted works such as software and multimedia contentas well as systems within devices that enforce these policies. For more details check wiki. Remember product key A typically alphanumerical serial number used to represent a license to a particular piece of softwareit is one of the oldest and least complicated DRM protection methods for the computer games.
Although, use of DRM is not universally accepted. Proponents of DRM argue that it is necessary to prevent intellectual property from being copied freely, just as physical locks are needed to prevent personal property from being stolen, that it can help the copyright holder maintain artistic control, and that it can ensure continued revenue streams. Those opposed to DRM contend there is no evidence that DRM helps prevent copyright infringement, arguing instead that it serves only to inconvenience legitimate customers, and that DRM helps big business stifle innovation and competition.
Furthermore, works can become permanently inaccessible if the DRM scheme changes or if the service is discontinued. Irrespective of your view about the use of DRM if you are working in industries like entertainment and gaming which have been using DRM for a long you might still want to stick around to see what all the fuss it about and educate yourself.
The biggest hastle with DRM is the native support for different browsers on different devices. Check this list to get an idea. So in order for you to provide your customers DRM service on most common browsers you will have to use more than one provider. For more geeky pals out there check the state of encrypted media extension here where you will also find some more resourcesdo check the html5rocks article by Sam Dutton. For this article we will focus on DASH first with widevine and playready.
Fairplay uses HLS. Groups lobbying for DRM. Before moving forward skim through this Stackoverflow Question if you are wondering about open-source DRM solution. To make our life easy we will use ezdrm to help us with multi-drm. I recommend ezdrm because of the level of support you will receive. It took me some time to figure out small details as not much material was available online hence quick support becomes very important in such cases.
As for this article we will use ffmpeg, Bento4 and Jwplayer to get the job done. You can also replace them with some alternatives after checking how the whole process works. So I would recommend to have some familarity with libraries like ffmpeg and bento4 before you move forward. DRM is a complex system with multiple moving parts so getting yourself familiar with ecosystem would go a long way.
Assuming familarized yourself with ffmpegyou now know that ffmpeg can be used for various purposes. Here we will use it for say burning subtitles and creating four different versions for adaptive streaming.
Now comes the benot4 into play. The format is a derivative of the Apple Quicktime file format, so Bento4 can be used to read and write most Quicktime files as well. Visit www. Note you will have to use python2. I was planing to update it for python3 but was advised againt by Gilles Boccon creator of bento4 in the interest of time. Thanks for that tip Gilles!. Now using bento4 we will fragment the output videos which we got from ffmpegcommand would be like.
Once you have that you can use this python code to get parse values from xml response. You can skip this portion if you already have figured a way to get all the values which we will need from widevine, playready and fairplay. Moreover you might also want to save these values somewhere for future reference.
I checked the code and it was failing at line number check on github i.FFmpeg only provides source code. Below are some links that provide it already compiled and ready to go. You can retrieve the source code through Git by using the command:. FFmpeg has always been a very experimental and developer-driven project. It is a key component in many multimedia projects and has new features added constantly.
Since FFmpeg is developed with Gitmultiple repositories from developers and groups of developers are available. Approximately every 6 months the FFmpeg project makes a new major release. Between major releases point releases will appear that add important bug fixes but no new features.
Note that these releases are intended for distributors and system integrators. Users that wish to compile from source themselves are strongly encouraged to consider using the development branch see abovethis is the only version on which FFmpeg developers actively work.
The release branches only cherry pick selected changes from the development branch, which therefore receives much more and much faster bug fixes such as additional features and security patches. It is the latest stable FFmpeg release from the 4. It is the latest stable FFmpeg release from the 3. It is the latest stable FFmpeg release from the 2.
Amongst lots of other changes, it includes all changes from ffmpeg-mt, libav master oflibav 11 as of Hosting provided by telepoint. Get the Sources Download Snapshot. Git Repositories.
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Learn more. Ask Question. Asked 11 months ago. Active 11 months ago. Viewed times. Sathish Rao Sathish Rao 47 7 7 bronze badges. Look into bento4. Per my knowledge and study, bento4 is a sort of MP4 focused. Its support for Sample encryption is through its tool "mp4hls" which takes mp4 file as input and re-packages it into HLS with optional Sample Encryption.
Please correct me if I'm wrong. As per the docs for mp42hls, what you could do is remux your TS to MP4 and then use mp42hls to generate a single segment TS with encryption. Thanks again. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm sure this is possible, but I haven't found a way to do it yet and I'm wondering if anyone has done it and would be willing to share how. How are we doing? Please help us improve Stack Overflow. Take our short survey.
Learn more. Asked 3 years, 6 months ago. Active 3 years, 4 months ago. Viewed times. Larry Larry 7 7 bronze badges. Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Cryptocurrency-Based Life Forms. Q2 Community Roadmap. Featured on Meta. Community and Moderator guidelines for escalating issues via new response….
Feedback on Q2 Community Roadmap. Triage needs to be fixed urgently, and users need to be notified upon…. Dark Mode Beta - help us root out low-contrast and un-converted bits. Technical site integration observational experiment live on Stack Overflow. Related 1. Hot Network Questions. Question feed.Options which do not take arguments are boolean options, and set the corresponding value to true.
They can be set to false by prefixing the option name with "no". For example using "-nofoo" will set the boolean option with name "foo" to false. Some options are applied per-stream, e. Stream specifiers are used to precisely specify which stream s a given option belongs to.
A stream specifier is a string generally appended to the option name and separated from it by a colon. Therefore, it would select the ac3 codec for the second audio stream.
A stream specifier can match several streams, so that the option is applied to all of them. An empty stream specifier matches all streams. For example, -codec copy or -codec: copy would copy all the streams without reencoding. Matches the stream with this index. Stream numbering is based on the order of the streams as detected by libavformat except when a program ID is also specified. In this case it is based on the ordering of the streams in the program.
Otherwise, it matches all streams of the specified type. Matches streams with the metadata tag key having the specified value. If value is not given, matches streams that contain the given tag with any value.Eclipse Ballooningn Project Tutorial Video: Streaming via ffmpeg
Matches streams with usable configuration, the codec must be defined and the essential information such as video dimension or audio sample rate must be present. Show help. An optional parameter may be specified to print help about a specific item. If no argument is specified, only basic non advanced tool options are shown.
Print complete list of options, including shared and private options for encoders, decoders, demuxers, muxers, filters, etc.