FFMPEG GUI BROADCASTER WINDOWS 7

The -f dshow tells ffmpeg we need to use direct show.

My setup has this all running on a single machine.įor taking the video and serving it via UDP I use the following command : ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video='Decklink Video Capture':audio='Decklink Audio Capture' -r 30 -threads 4 -vcodec libx264 -crf 0 -preset ultrafast -f mpegts 'udp://239.255.12.42:6666' Note that rtp:// URIs cannot work with dynamic RTP payload format (65).Īfter a bit of reading it seems I should not be streaming to rtp:// but rather to udp://Ĭommand became : ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video='Decklink Video Capture':audio='Decklink Audio Capture' -threads 2 -f mpegts udp://127.0.0.1:6666?pkt_size=188?buffer_size=65535Īnd when I try to open it now in VLC I get no error, no warning, but also no video.įinally got it working. But when I try to open the stream in VLC I get the following error :Ī description in SDP format is required to receive the RTP stream. Which does not give any errors, so appears to work. Tried to use this command : ffmpeg -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video='Decklink Video Capture':audio='Decklink Audio Capture' -threads 2 -f mpegts rtp://127.0.0.1:6666?pkt_size=188?buffer_size=65535 Next step is streaming it so I can view the stream (preview) with VLC.

I have been able to display the video using ffplay, with the following command : ffplay -f dshow -video_size 1280x720 -rtbufsize 702000k -framerate 60 -i video='Decklink Video Capture':audio='Decklink Audio Capture' -threads 2 In my mind this works, but I am no audio/video expert so if anyone with more experience could help out, I would appreciate it. And ultimately start and/or stop another ffmpeg to save that same stream to disk. Then use VLC player to display the stream (the preview). My idea was to use ffmpeg to capture the video and audio signal and transmit this to a network stream (eg 127.0.0.1:6666).

And simultaneously be able to start and stop recording, while the preview keeps playing. Ultimately I will need to display this video on screen. This is the stream information for my current video/audio source, connected to the decklink card's hdmi port Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422(tv), 1280x720, 59.94 tbr, 10000k tbn, 59.94 tbc pixel_format=uyvy422 min s=1280x720 fps=60.0002 max s=1280x720 fps=60.0002įfmpeg -list_options true -f dshow -i audio='Decklink Audio Capture' DirectShow audio device options 'Decklink Audio Capture'įfmpeg -list_options true -f dshow -i video='Decklink Video Capture' DirectShow video device options ffmpeg -list_devices true -f dshow -i dummy DirectShow video devices

FFMPEG GUI BROADCASTER WINDOWS 7

I am trying to capture audio and video from a blackmagic decklink capture card using Windows 7 720p, but I cant seem to get the ffmpeg command line settings right.

Ffmpeg gui broadcaster