I where searching for any Solution to enable playing DRM Content on IOS and Android. I want to develop a Cross Platform Solution that can play DRM protected content, no matter if its Widevine or playready.
For Flutter there wasnt any Solution, so i switched to RN
For React Native i just found the Exoplayer to be able to play widevine but no Playready DRM Content.
Maybe someone of you guys can help me to find out, how im able to do this on both Platforms ?
Best Regards
To play back encrypted content protected by a particular DRM scheme, you need that DRM scheme to be supported on the device or browser.
As a general rule the following DRM's are supported natively on device and browsers - naively means that the DRM is usually built into the OS or the browser when you purchase the device:
Android devices - Widevine
Chrome browser on a PC or MAC - Widevine
iOS device - FairPlay
Safari browser - FairPlay
Internet Explorer browser - PlayReady
To allow encrypted content be played on multiple devices you need to encrypt it with the scheme for each device. In the past this has meant having to have separate streams, but DASH CENC allows a single stream to be encrypted by multiple DRM schemes - the spec is at this link:
https://www.iso.org/obp/ui/#iso:std:iso-iec:23001:-7:ed-3:v1:en
Unfortunately, the spec is restricted access to if you do not have access it may be worth having a look at some of the packager websites which will include information about creating CENC streams - for example:
https://www.wowza.com/docs/how-to-secure-mpeg-dash-streaming-using-common-encryption-cenc
http://docs.unified-streaming.com/documentation/drm/mpeg-dash.html#common-encryption-cenc
There is one other thing to be aware of, as traditionally iOS/FairPlay has used a different AES encryption mode than Widevine and PlayReady - it uses AES CBC mode rather than CTR mode. However, Widevine and PlayReady have recently announced support for AES CBC mode also so the nirvana of a single encrypted format that will play on all devices is now in theory possible - it will take some time for support to role out to all devices most likely, however.
Related
I have a product that can analyze video after inputting an rtsp url.
I would like to use a webcam to stream and feed my product the webcam rtsp.
How can I do that?
It will depend on the webcam you are using - most support RTSP but many do not publish the interface to access the stream as they are designed to be used with the webcam's own companion app.
There are some web resources which provide the RTSP urls for common web cams - you may find it hard to find a match as new versions of webcams roll out but it should give you a feel how to try accessing a vendors camera if you have a specific web cam you are testing against. Some examples (at the time of writing):
https://www.getscw.com/decoding/rtsp
https://soleratec.com/get-support/rtsp/
If you can't find the info for the camera you are using, and you have the companion app, you can also use a network sniffer tool like Wireshark (https://www.wireshark.org) and try to search the traffic for 'rtsp://' pattern.
If you just need to test your app and have access to a raspberry pi with a camera module you can also use this to generate an RTSP stream - there are several approaches for this but one I have found reliable is the v4l2rtspserver server:
https://github.com/mpromonet/v4l2rtspserver
There are specific instructions for setting it up on PI (https://github.com/mpromonet/v4l2rtspserver/wiki/Setup-on-Pi) and you can also verify it is working using VLC player on a laptop etc before testing in your specific application.
There are also a small number of test RTSP urls available on the web - the most reliable seem to be the one at this link provided by Wowza (again, link valid at time of writing):
https://www.wowza.com/html/mobile.html
I am trying to make an online examination portal. When students start the exam, their webcam will start automatically and record the stream live and store in the server. Invigilators will either watch the students live or they can watch the saved live streams later.
I researched about this and found WebRTC as a possible solution along with a gateway server like Kurento. But later found out that WebRTC is not supported in Safari, which is a setback! My application should run successfully in web portal in any modern browsers which includes safari and also in android or iphone.
So can anyone suggest a possible solution to my problem? Which technology should I use that can support all browsers and OS?
Also, it would be helpful if you can provide links to good documentation or tutorials.
Note from the future (2020): This answer really isn't accurate anymore.
WebRTC is one problem... capture from the camera with getUserMedia is another. Safari doesn't support either.
There is no video capture API in Safari currently. The only thing you can do is make a native app for iOS.
Worse yet, because of Apple's restrictive policies, alternative browsers, such as Chrome, are crippled on iOS as they aren't allowed to use their own browser engines.
Use standards based technologies like getUserMedia and WebRTC for your primary web-based application. If you decide that the economics of your situation enable it, you can make an iOS app to work alongside until Apple decides to participate in modern browser standards like everyone else.
You can use Mediadevices.getUserMedia (https://developer.mozilla.org/en-US/docs/Web/API/MediaDevices/getUserMedia) to capture webcam stream on browser (chrome and firefox).
To play with webcam stream on safari, you would have to use a pollyfill - https://github.com/Temasys/AdapterJS
To record the video/audio stream, you can make use of Media recorder api https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder (Note : recording stream is still a challenge in Safari as there is no support/pollyfill. However, it works perfectly on Chrome and Firefox latest versions).
Helpful demonstrations :
https://webrtc.github.io/samples/
https://mozdevs.github.io/MediaRecorder-examples/index.html
https://codepen.io/collection/XjkNbN/
https://hacks.mozilla.org/2016/04/record-almost-everything-in-the-browser-with-mediarecorder/
I want to let WebRTC encoded and play h264(NAL) stream(local file).
In the WebRTC tutorial, getUserMedia is use for get local camera connecting to the system, I don`t know if the getUserMedia function support
capture the local stream file like h264 stream.
If it doesn't work that way, may be I should modify WebRTC source code(I'm studying it).
Here is the question, If i change WebRTC code, how can i integration the new code into browser? Made it a plugin?
Firefox supports an extension to the <video> element that you can use to do this.
First, set the source of a video element:
v1.src = "file:///...";
Then you can call the (currently prefixed) mozCaptureStream or mozCaptureStreamUntilEnded function to get a MediaStream.
stream = v1.mozCaptureStream();
The proposed specification.
Note however that you need to ensure that the file is same origin with respect to the page. The same origin rules for file:/// are probably going to cause issues. Otherwise your MediaStream isn't going to be accessible to you. One way to ensure that is not to set the location directly, but to load the file using an <input type="file"> element.
As noted in other answers, Firefox currently only supports the baseline profile of H.264.
First, you are right getusermedia will not work for you. However, there are a couple of options.
Hack a stream together using RTCDataChannel. Breaking up the media stream and delivering each packet and then handling it on the client side.
Take a look at this demo for precorded media streams. I do not believe that H264 is addressed but it could help you on your way(probably for Firefox only)
Use some sort of webrtc breaker/endpoint that is native to stream the file. I know specifically that others(including myself) have streamed H264 to Firefox through the Janus-Gateway
Couple of asides:
Firefox only supports Baseline profiles in streaming h264 for a webrtc peerconnection
Chrome does not support h264 for webrtc at all
Are you trying to have getUserMedia return a h.264 encoded stream?
In which case, today it will only be possible with Firefox today, under some specific environment (cisco 264 plugin installed) and only for the base profile.
Chrome promised in november to add this capacity, but there is no timeline that I know of Expect at least Q2 2015.
Using our (temasys) commercial plugin you will soon be able to do that in IE and Safari.
Those are the only options on client side I can think of. On server side you can use whatever you want to transcode, including janus, kurento, powermedia, licode/lynkia, ....
Note: using other means like Datachannel or WebSocket are ok to transfer files, but would greatly reduce the user experience as you would not have all the added recovery (and security) mechanisms included in SRTP, DTLS, and would also not have specific mistreated media enhancements that are in webRTC like jitter, buffers, netQ, ect ...
We have an option to download PDF on our mobile website. PDF download is working in one environment, but not working in another environment in Samsung Galaxy tab.
In the environment where it is not working in the Galaxy tab, it's working absolutely fine in both iPad and Desktop. The pdf is generated and the "starting download" toast message also appears, but after that the download fails.
Has anyone faced this issue before?
OS version : 4.0.3
Browser. : Native android browser
I've looked into this a bit, and I found that it works ok when the downstream/upstream ratio of my internet connection is about 2:1, but it doesn't work when the ratio is 10:1. Based on that, I'd suggest that the Android end of the transport protocol isn't very good about adapting to highly asymmetric connections. The upstream path is used for acknowledgements, and a highly asymmetric path can interfere with the protocol - particularly when each end of the protocol is designed by different parties (and not thoroughly tested). All of your testing is consistent with this theory. And it is a known issue that transport protocols can sometimes fail to adapt adequately to asymmetric paths.
I'm a C programmer and a total newbie to Flash/video/web world. Don't know where/how to start, and so would greatly appreciate your initial help.
Question
If I need to host flash videos off of my website (instead of embedding YouTube links on my webpages),
AND
If I need to provide player API like YouTube's that can be used, say, for supporting chromeless player versions customizable via this custom API of mine...
THEN
What do I need to do essentially...?
Write a custom Flash video player?
If yes, how? I mean, using which Adobe products / tools / SDKs / language(s)?
Is there anything free/opensource available for doing this? Especially, for Linux platform?
Write a new browser (firefox) plugin for users visiting my site?
Not sure how my custom Flash video player will get to the user visiting my site for the first time?
Any books, resources that cover this problem well?
Does the Flash content need to hosted off of a Windows server only?
Currently lost. Thanks in advance,
/SD
Flash has video playback support built-in, so all you need to do is use the Flash authoring environment or Flex to compile a .SWF file that uses the video API, with some buttons to stop and start the stream, volume, seeking, anything else you want your player to do.
Many people have already done this for you, in a way you can easily use from simple HTML. See eg. OSFLV, Flowplayer, JW...
Write a new browser (firefox) plugin for users visiting my site? Does the Flash content need to hosted off of a Windows server only?
Lord no! Flash video would never have taken off if it was just another custom-server+custom-plugin piece of unpleasantness. Though special streaming servers are possible, for the most part it's just an FLV file sitting on a web server.
(FLV is the video format supported by the Flash video playing functions. There are many, many tools you can use to convert other formats to it; I use Avidemux.)
If you are planning to use a "Progressive Download" approach, then your FLV files can be hosted on a Windows or a Linux box. Be aware that:
it is no as efficient as true
streaming.
you may not use it for live events
nor only for stored video files.
it cannot automatically detect the
end user's connection speed.
it is not possible to jump ahead to
another part while it's downloaded.
the video file will be saved on the
end user's computer.
If you are planning to use a "Streaming" approach then you can either buy and use Adobe's solution (Flash Media Server, available on both Windows and Linux box) or sign up for a hosted solution. On this page you will find recommended providers by Adobe. I personally have been using Influxis's hosting with success for a couple of years already.
You can also write your own streaming server but that would be a lot of hard work. If you are interested in that, I would recommend you have a look a Red5 which is an open source Flash Server written in Java.