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

[Laxi Khatri]

Hi

I'm trying to stream audio file from rtsp using below command:

ffmpeg -re -i song.mp3 -f rtsp -muxdelay 0.1 rtsp://192.168.0.3:8554/live.sdp

But it is doing nothing. Can you please tell what I'm doing wrong?



Thanks & Regards

Laxmi Khatri


On Wed, Sep 10, 2014 at 6:21 PM, Damian Głodny <damian at artnmedia.pl> wrote:

> 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!
> >
> >
> >
> > _______________________________________________
> > ffmpeg-user mailing list
> > ffmpeg-user at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
> >
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