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• Video Downloader

QTkit exposes almost nothing about cameras on OSX, making constraints hard to write and get right even with guessing. QTKit is also deprecated in favor of AVFoundation, which sounds better: Haakon Sporsheim [:haaspors] (Telenor) wrote in Bug 1131861 comment 4: > Now, the video capture backend for OS X is currently based on QTkit which is > deprecated in OS 10.9. AVFoundation uses the convention 'Video:Audio,' so capturing audio using the built-in microphone would appear as ':1' in the next command because the microphone is assigned to the '1' audio device. To capture audio using the built-in microphone, run the below command from a Netcat shell on the backdoored MacBook.

Though as I do not have the same webcam this may not resolve your issue. Ffmpeg -f avfoundation -framerate 6 -i '0' -target pal-vcd test.mpg I hope this helps you find a solution.

• demonstrates using the metadata APIs.

The advantage of using AVFoundation instead of the out-of-the-shelf solutions such as the UIImagePickerController, is that you get access to the single camera pixels. In this way, you can process video frames in real-time using frameworks such as Metal, Core Image, Core Audio or Accelerate.

Done Suggested packages: ffmpeg-doc The following packages will be upgraded: ffmpeg 1 upgraded, 0 newly installed, 0 to remove and 596 not upgraded. Need to get 1,622 kB of archives.

} This method belongs to the AVCaptureVideoDataOutputBufferSampleBufferDelegate protocol. The second argument of this method provides the sample buffer of type CMSampleBuffer that represents a camera frame. Camera Preview Besides collecting the camera frames, we can also preview them on the App UI. This can be done using an instance of AVCaptureVideoPreviewLayer. This is a special Core Animation layer that AVFoundation uses to render frames in real time. Hence, let’s add the following property to our view controller.

The first property (line 3) is the videoSettings. This is a dictionary containing the compression settings keys (jpeg, H264, ) or the pixel buffer attributes (RGBA32, ARGB32, 422YpCbCr8, ).

On 2016/04/28 21:51:55, tkchin_webrtc wrote: > On 2016/04/28 21:38:57, farazrkhan wrote: > > On 2016/04/28 21:35:07, juberti2 wrote: > > > On 2016/04/28 06:10:06, tommi-webrtc wrote: > > > > +magjed and tkchin > > > > > > please make sure any new AUTHORS have signed the webrtc CLA. > > > > Thanks for the reminder. I just signed the CLA.

I just signed the CLA. I would prefer that changes be made to RTCAVFoundationVideoSource The device_info bits don't work super-well, because there isn't a way to get the AVCaptureSession object back (and we want it for things like the capture preview layer). On 2016/04/28 21:51:55, tkchin_webrtc wrote: > On 2016/04/28 21:38:57, farazrkhan wrote: > > On 2016/04/28 21:35:07, juberti2 wrote: > > > On 2016/04/28 06:10:06, tommi-webrtc wrote: > > > > +magjed and tkchin > > > > > > please make sure any new AUTHORS have signed the webrtc CLA.

You can count the number of discarded frames using the captureOutput: didDropSampleBuffer: fromConnection: method defined in the AVCaptureVideoDataOutputBufferSampleBufferDelegate protocol. Finally, I check if I can add an output to the session and commit the configuration (line 5). The last 2 lines (line 6 and line 7) define a GCD serial queue and the delegate object of the data output. The session sends each frame to the delegate object. You can collect each frame implementing.

• If you simply want to play movies, use the AVKit framework. • On iOS, to record video when you need only minimal control over format, use the UIKit framework ( ). Note, however, that some of the primitive data structures that you use in AV Foundation—including time-related data structures and opaque objects to carry and describe media data—are declared in the Core Media framework. At a Glance There are two facets to the AVFoundation framework—APIs related to video and APIs related just to audio. The older audio-related classes provide easy ways to deal with audio.

You may also able to find other users who found success with specific capture cards on the. Note: Telestream Support is unable to officially support any of the following capture cards. We will make every effort to assist you, but you may be asked to use the above resources. Devices listed below provide information on their supported driver and the interface required to connect to a computer running Wirecast. A device driver is a computer program that operates or controls a particular type of device that is attached to a computer.

> > I would prefer that changes be made to RTCAVFoundationVideoSource > The device_info bits don't work super-well, because there isn't a way to get the > AVCaptureSession object back (and we want it for things like the capture preview > layer) @tkchin_webrtc: I've made relevant changes to webrtc::AVFoundationVideoCapturer to compile (and work) on OSX. I'm currently using the 'default' camera device that avfoundation provides but could hook in a mechanism to select devices by name/uniqueID if you think this approach is workable. I've tested this in my app and seems to work fine.

The list of software and hardware that supports NDI is continually growing as the technology develops, but below are some commonly used NDI enabled products that can be used to send video into Wirecast. Wirecast Pro can also output it’s produced live feed over NDI, allowing it to be received by other devices or software on the local network.

Video Downloader

Webrtc/modules/video_capture/mac/avf/rtc_video_capture_avf_objc.mm:202: #if defined(WEBRTC_IOS) SDK > x? File webrtc/modules/video_capture/mac/avf/video_capture_avf.h (right): webrtc/modules/video_capture/mac/avf/video_capture_avf.h:27: const char* device_unique_id_utf8); Indentation? File webrtc/modules/video_capture/mac/avf/video_capture_avf.mm (right): webrtc/modules/video_capture/mac/avf/video_capture_avf.mm:46: const int32_t capture_id, Did you run clang-format? Looks like this indentation is wrong.

You can connect traditional SD, HD and UHD/4K video cameras to Wirecast by using a compatible capture card. DSLR and mirrorless cameras also work via capture cards. Please refer the Capture Card section below for more details on compatible capture and ingest cards.

If you close Chrome you will have to redo the process from Step #2. It seems like Firefox initializes something that makes the Chrome startup different and causes it to detect the sample camera. I don't recommend to rely on this though.

> > > > Thanks for the reminder. I just signed the CLA.

I wasn't able to change the BUILD.gn here though since I'm not able to cross-compile for iOS using gn - but seems like a known issue.

> > > > Thanks for the reminder. I just signed the CLA. > > I would prefer that changes be made to RTCAVFoundationVideoSource > The device_info bits don't work super-well, because there isn't a way to get the > AVCaptureSession object back (and we want it for things like the capture preview > layer) tkchin - thanks for the feedback. I was unaware of this class. I see that much of the AVFoundation capture logic is now present in webrtc/api/objc/AVFoundationVideoCapturer.mm - seems like this supersedes everything in modules/video_capture for iOS? Can you explain the relationship between the two?

If QTKit is required, it can be selected via a gyp/gn switch called use_avfoundation (defaults to 1) BUG=3968 ==========. Mostly minor stuff. Most significant thing is the ARC change. File AUTHORS (right): AUTHORS:13: Dan Winkler I would probably try to contact Mr. Winkler just to confirm he's cool with this. File webrtc/build/common.gypi (right): webrtc/build/common.gypi:154: # Use avfoundation (default) Add a more descriptive comment; something like: 'Enable to use the AVFoundation framework on OS X.

[1] @@ +97,5 @@ > + // Not implemented. Mac doesn't use discrete steps in capabilities, rather > + // 'analog'. AVFoundation will do it's best to convert frames to what ever format > + // you ask for. > + WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, _id, > + 'NumberOfCapabilities is not supported on the Mac platform.' ); GetBestMatchedCapability appears unused, except on Android, so we should be fine, but we should change this error message perhaps. @@ +112,5 @@ > + return [[_captureInfo > + displayCaptureSettingsDialogBoxWithDevice:deviceUniqueIdUTF8 > + AndTitle:dialogTitleUTF8 > + AndParentWindow:parentWindow AtX:positionX AndY:positionY] > + intValue]; I suspect this is dead code, but if QTKit does it.

This is heavily based on Dan's CL which can be found at However the above CL is over a year old and no longer compiles against master. This CL does and also makes QTKit selectable. If QTKit is required, it can be selected via a gyp/gn switch called use_avfoundation (defaults to 1) BUG=3968 ========== to ========== Use iOS AVFoundation video capturer for mac as well This CL merges the iOS and OSX code for utilizing the AVFoundation capturer. This is heavily based on Dan's CL which can be found at However the above CL is over a year old and no longer compiles against master. This CL does and also makes QTKit selectable.

File webrtc/build/common.gypi (right): webrtc/build/common.gypi:154: # Use avfoundation (default) Add a more descriptive comment; something like: 'Enable to use the AVFoundation framework on OS X. Otherwise, QTKit will be used.' File webrtc/build/webrtc.gni (right): webrtc/build/webrtc.gni:120: # use avfoundation capturer Add the same (more descriptive) comment here.

Step 1: Install FFmpeg in Kali On the attacker's Kali Linux system, FFmpeg can be installed using the install ffmpeg command, as seen below. Apt-get install ffmpeg Reading package lists. Done Building dependency tree Reading state information.

File webrtc/modules/video_capture/BUILD.gn (right): webrtc/modules/video_capture/BUILD.gn:69: # if (is_ios) { Remove this commented out block. Webrtc/modules/video_capture/BUILD.gn:106: cflags = [ '-fobjc-arc' ] # CLANG_ENABLE_OBJC_ARC = YES. What fails if you don't enable ARC?

It’s possible that you need certain drivers or recommended settings to make it work with Wirecast, and they can best assist you with this. You may also able to find other users who found success with specific capture cards on the. Note: Telestream Support is unable to officially support any of the following capture cards. We will make every effort to assist you, but you may be asked to use the above resources. Devices listed below provide information on their supported driver and the interface required to connect to a computer running Wirecast.

If QTKit is required, it can be selected via a gyp/gn switch called use_avfoundation (defaults to 1) BUG=webrtc:3968 ==========. On 2016/04/28 21:38:57, farazrkhan wrote: > On 2016/04/28 21:35:07, juberti2 wrote: > > On 2016/04/28 06:10:06, tommi-webrtc wrote: > > > +magjed and tkchin > > > > please make sure any new AUTHORS have signed the webrtc CLA. > > Thanks for the reminder.

AVFoundation Capture Session AVFoundation is based on the concept of session. A session is used to control the flow of the data from the input to the output device. You initialize a session in a very straightforward way. } Since the initialization of the capture device input can throw an error, you use the do-try-catch Swift construct (please, check book for details). Inside the do scope, I start the session configuration (line 1). Then, I check if I can add an input to the session. In line 2, I instantiate the video data output and set a couple of its properties.

This is all brilliant, and I really appreciate your efforts. Your edit did fix my problem, however now I'm having a slightly different issue, when tap the red square, the app isnt recording the video. I get this message in the debugger 2017-01-17 17:23 CustomCamera[1364:351538] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles 2017-01-17 17:04 CustomCamera[1364:351538] [MC] Reading from public effective user settings. – Jan 17 '17 at 17:08.

Not only can VLC Media Player handle loads of different formats, VLC can also playback partial or incomplete media files so you can preview downloads before they finish. Easy to Use VLC’s UI is definitely a case of function over beauty. The basic look does however make the player extremely easy to use. Simply drag and drop files to play or open them using files and folders then use the classic media navigation buttons to play, pause, stop, skip, edit playback speed, change the volume, brightness, etc. A huge variety of skins and customization options mean the standard appearance shouldn’t be enough to prevent you choosing VLC as your default media player.

(I don't really know why the default value is disabled, but i hope they will change it as Apple tends to deprecate QTKit.) Other solutions that i prefer less: Disabling Pepper Flash (PPAPI) and using NPAPI Flash Player instead. • Open a new tab in chrome. • Go to chrome://plugins. • Hit the plus ( +) sign in the upper right corner next to Details. • Search for the Adobe Flash Player plugin section. • Locate the Pepper Flash version ( PPAPI type).

So far my best solution is the following: • Open a new tab in chrome. • Go to chrome://flags. Download psiphon 3 for mac. • Search for 'Enable use of Mac OS X AVFoundation APIs, instead of QTKit, Mac' entry. • Set the above-mentioned entry to Enabled.

Just plug in your cameras and start streaming. Wirecast natively has the ability to add integrated audio sources such as your PCs line-in jack, microphone or microphone jack, and even the ability to capture audio playing out of your system. Aside from integrated device capture, Wirecast supports audio interfaces via a variety of APIs: • Windows: • ASIO • WASAPI • DirectShow (2 channels per device support only) • macOS: • AVFoundation The below devices have been tested as compatible with Wirecast. While others will likely work if they support the same standards, only the devices listed here are officially supported. Interfaces Brand Model Analog Channels ADAT Expansion TASCAM 10 8 16 N/A 2 N/A 2 N/A 2 N/A Behringer 8 8 Focusrite 8 8 M-Audio 8 N/A MOTU 4 N/A Native Instruments 6 N/A PreSonus 4 16 RME 4 8 Steinberg 4 N/A Zoom 8 8.

Nice to know I'm not the only one! Sounds like you've uncovered a lot more of the details from Cisco than I was able to. My workaround has been to run my BM Mini Recorder through Wirecast to apply the scaling, then use Wirecast's virtual camera feature to send the cropped video into Webex. It's been working OK, but is far from ideal. I haven't heard of any patches or fixes coming, but I'm now looking into the Magewell XI100DUSB SDI dongle, which should take the SDI from my ATEM directly into Webex. I'll let you know how that goes in a week or two.