[FFmpeg-user] Blackmagic Intensity Pro - how to capture video with audio?

[Damian Głodny]

Hi, I found solution for my problem. I made a fresh install of Blackmagic drivers and got Decklink Video and Audio Capture on DirectShow devices list. Now everything work as it should. 


-----Original Message-----
From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Roger Pack
Sent: Wednesday, September 10, 2014 2:27 PM
To: FFmpeg user questions
Subject: Re: [FFmpeg-user] Blackmagic Intensity Pro - how to capture video with audio?

does it use a crossbar interface do you know?
there are some patches on ffmpeg-devel list [uncommitted as of yet, sorry!] that might help...

On Mon, Sep 8, 2014 at 6:12 AM, Damian Głodny <damian at artnmedia.pl> wrote:

> Hello, I have Blackmagic Intensity Pro video card and I want to stream 
> video from that card to multicast using ffmpeg. But my problem is that 
> I can get only video from that card, no audio.
>
> Ok, time for some commands.
>
>
>
> List of my dshow devices:
>
> -=-=-=-=-=-=-
>
> ffmpeg -list_devices true -f dshow -i dummy
>
>
>
> [dshow @ 0000000004437720] DirectShow video devices
>
> [dshow @ 0000000004437720]  "Blackmagic WDM Capture" <- it is 
> Intensity Pro card
>
> [dshow @ 0000000004437720] DirectShow audio devices
>
> -=-=-=-=-=-=-
>
>
>
> As you can see Intensity Pro does not provide a separate DirectShow 
> audio device.
>
>
>
>
>
> Blackmagic WDM Capture options:
>
>
>
> -=-=-=-=-=-=-
>
> ffmpeg -f dshow -list_options true -i video="Blackmagic WDM Capture"
>
>
>
> [dshow @ 00000000043e7720] DirectShow video device options
>
> [dshow @ 00000000043e7720]  Pin "Video Capture"
>
> [dshow @ 00000000043e7720]   pixel_format=uyvy422  min s=1280x720 fps=50
> max
> s=1280x720 fps=50
>
> [dshow @ 00000000043e7720]  Pin "Audio Capture"
>
> -=-=-=-=-=-=-
>
>
>
> As you can see THERE IS a pin called "Audio Capture".  But how I can 
> use it?
>
>
>
>
>
> So here is my question: how I can map that Audio Capture pin as a 
> ffmpeg audio input?
>
>
>
> I tried following commands (ffplay):
>
> ffplay -f dshow -i video="Blackmagic WDM Capture" -> I can see only 
> video, no sound
>
> ffplay -f dshow -i video="Blackmagic WDM Capture":audio="Blackmagic 
> WDM Capture" -> error: [dshow @ 0000000002a8f480] Could not find audio device.
>
>
>
> Is it possible or Intensity Pro "is not compatible" with ffmpeg?
>
>
>
>
>
>
>
>
>
> ---
>
> Cheers!
>
>
>
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> ffmpeg-user at ffmpeg.org
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>
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