<p>As the <a href="https://ffmpeg.org/ffmpeg-devices.html#decklink-1" rel="nofollow">docs</a> say,</p>

<blockquote>
  <p>you need the Blackmagic DeckLink SDK and you need to configure with
  the appropriate --extra-cflags and --extra-ldflags. On Windows, you
  need to run the IDL files through widl</p>
</blockquote>

<p>If so, run</p>

<pre><code>ffmpeg -re -i rtmp://server/live/streamname -c:v rawvideo -pix_fmt uyvy422 -vf scale=720x576 -c:a pcm_s16le -ar 48000 -ac 2 -f decklink "Device"
</code></pre>

<p>where <code>Device</code> is to replaced with the name of 'Decklink Studio 4K' as indicated by <code>ffmpeg -f lavfi -i nullsrc -f decklink -list_devices 1 dummy</code></p>

CC BY-SA 3.0
2016-09-23T11:21:25.300Z
2016-09-23T11:21:25.300Z
Gyan
<p>ffmpeg -re -i rtmp://server/live/streamname \
-c:v rawvideo -pix_fmt uyvy422 -vf scale=720x576 \
-c:a pcm_s16le -ar 48000 -ac 2 \
-f nut - | /bmd/bmdplay -C 0 -m 2 -f pipe:0</p>

<p><strong>Kindly share the exact command to take this rtmp stream to Decklink Studio 4K card(SDI).</strong></p>

<ffmpeg><rtmp><sdi><sd-card><blackmagic>
How do I playout rtmp stream to SDI (Decklink Studio 4K) using FFMPEG command?we are using Windows 7 operating system
Kishore Karmakar
# How do I playout rtmp stream to SDI (Decklink Studio 4K) using FFMPEG command?we are using Windows 7 operating system

(Asked by: username_0 on 2016-09-23)

ffmpeg -re -i rtmp://server/live/streamname \
-c:v rawvideo -pix\_fmt uyvy422 -vf scale=720x576 \
-c:a pcm\_s16le -ar 48000 -ac 2 \
-f nut - | /bmd/bmdplay -C 0 -m 2 -f pipe:0

**Kindly share the exact command to take this rtmp stream to Decklink Studio 4K card(SDI).**

**Tags:** ffmpeg, rtmp, sdi, sd-card, blackmagic


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## 1 answers

### Answer by username_1 on 2016-09-23. Score: 1

As the docs say,

you need the Blackmagic DeckLink SDK and you need to configure with
  the appropriate --extra-cflags and --extra-ldflags. On Windows, you
  need to run the IDL files through widl

If so, run
ffmpeg -re -i rtmp://server/live/streamname -c:v rawvideo -pix_fmt uyvy422 -vf scale=720x576 -c:a pcm_s16le -ar 48000 -ac 2 -f decklink "Device"

where Device is to replaced with the name of 'Decklink Studio 4K' as indicated by ffmpeg -f lavfi -i nullsrc -f decklink -list_devices 1 dummy


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