Stack Overflow
Stack Overflow

Questions tagged [blackmagic-design]

13 questions
1
vote
1 answer

Why the source order matters on working with multiple media sources in a single AVFormatContext?

avformat_open_input() deletes the AVFormatContext* and returns -6 when the source order changes. I am trying to open multiple media sources dynamically with different(mixed) formats and codecs in a single context (AVFormatContext). My media sources…
Mehmet YILMAZ
  • 111
  • 1
  • 6
1
vote
0 answers

Media Foundation - Custom Media Source & Sensor Profile

I am writing an application for previewing, capturing and snapshotting camera input. To this end I am using Media Foundation for the input. One of the requirements is that this works with a Black Magic Intensive Pro 4K capture card, which behaves…
Stijn De Pauw
  • 332
  • 2
  • 9
1
vote
0 answers

No suitable user defined conversion from type to const Decklink Input Device

I am trying to retrieve the frame from a Decklink input device for QT and pass this into a video sample queue for writing. The Line I am struggling with is how [this] is being passed as it says no suitable user defined conversion from type to…
JPonsford
  • 11
  • 1
0
votes
0 answers

AppleScript to control BlackMagic Videohubs

EDIT: The goal is for it to fire commands like: VIDEO OUTPUT ROUTING: 0 1 2 1 3 1 6 1 7 1 8 1 9 1 10 1 11 1 ↩ Although the issue is that it terminates before attempting to fire a command, due to the port being incorrect. I am working on the…
Joseph La Mere
  • 1
  • 2
0
votes
0 answers

Blackmagic decklink CapturePreviewCSharp fails to capture video

I have run the project CapturePreviewCSharp provided as a sample. However, it seems to be able to acquire the device status, etc., but the image is not output to the preview screen. There are no errors, etc. It seems that the rendering to D3DImage…
nharahara
  • 9
  • 2
0
votes
1 answer

Formatting Integer in Python

This is the Request I get from an BMD Hyperdeck, it contains the Video-files on the SD-Cards an the lengths of the Videos. I need the lengths of every file, separate in a List for my Code. What would be the right way to something like this? b'206…
Robert
  • 1
0
votes
0 answers

Play mpeg-2 file with 608/708 embedded captions out Decklink SDI

I have built ffmpeg with decklink support, it plays my mpg file fine out the SDI but not seeing any captions on my works broadcast monitor (JVC DT-V17G1Z). This monitor shows captions on SDI from my Mojito card but trying to get it to work with a…
asperi
  • 19
  • 1
0
votes
1 answer

Is there a minimal working example of C++ DeckLink output?

I would like to write a C++ program that outputs color patches to a monitor via a DeckLink card and samples the signal of a camera which is filming that monitor and also connected to the computer via a DeckLink card. Is there something like a…
filmmakerto
  • 31
  • 3
0
votes
1 answer

Blackmagic device and WebRTC are not compatible

I can not use an external camera connected via BlackMagic in WebRTC. I tried it in my source code, web versions of Google Hangout, appear.in (whereby.com), etc in Chrome, Firefox, Safari. Anything worked. Any idea how I can make it work at least for…
Iana Mykhailenko
  • 553
  • 5
  • 15
0
votes
0 answers

How to send socket message when Server has a preset initial response?

I'm making python binds for Blackmagic's Ethernet Control Protocol ( as documented in https://documents.blackmagicdesign.com/UserManuals/HyperDeckManual.pdf?_v=1528269592000 , page 60). Simple socket connection seems to fail however, because every…
hiperbolt
  • 184
  • 2
  • 3
  • 11
0
votes
1 answer

Decklink SDK & QtQuick

I'm trying to use BlackMagic Decklink SDK to display a video from a Decklink card into a QtQuick application. I successfully managed to do the same using QWidgets, so the video stream aquisition part is working. When using QWidgets (more…
Tim Autin
  • 6,043
  • 5
  • 46
  • 76
-1
votes
1 answer

C++: Read access violation (this-> x was nullptr) with Blackmagic DeckLink SDK

I write a little program depending on the Blackmagic Decklink SDK. When I use the DeckLinkInput interface I get the read access violation message "this->dl_input was nulltr". After hours of debugging I have no idea how to fix this issue. Maybe one…
Polo
  • 23
  • 7
-1
votes
2 answers

Video streaming from Blackmagic Atem Mini Pro to AWS MediaLive

Has anyone managed to stream from Atem Mini Pro to AWS MediaLive? This works fine from OBS, but will not work from the Atem with a customised streaming.xml file. I have previously customised streaming.xml to work Atem > Wowza. So I know it should…
Silverink
  • 1
  • 2