2021-02-09 14:22:18 +00:00
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# GStreamer AJA source/sink plugin
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[GStreamer](https://gstreamer.freedesktop.org/) plugin for
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[AJA](https://www.aja.com) capture and output cards.
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2023-10-21 07:02:43 +00:00
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This plugin requires the AJA NTV2 SDK version 16 or newer.
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The location of the SDK can be configured via the `aja-sdk-dir` meson option.
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If no location is given then the NTV2 SDK from
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[GitHub](https://github.com/aja-video/ntv2.git) is compiled as a meson
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subproject as part of the plugin.
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2021-02-09 14:22:18 +00:00
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## Example usage
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Capture 1080p30 audio/video and display it locally
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```sh
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gst-launch-1.0 ajasrc video-format=1080p-3000 ! ajasrcdemux name=d \
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d.video ! queue max-size-bytes=0 max-size-buffers=0 max-size-time=1000000000 ! videoconvert ! autovideosink \
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d.audio ! queue max-size-bytes=0 max-size-buffers=0 max-size-time=1000000000 ! audioconvert ! audioresample ! autoaudiosink
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```
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Output a 1080p2997 test audio/video stream
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```sh
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gst-launch-1.0 videotestsrc pattern=ball ! video/x-raw,format=v210,width=1920,height=1080,framerate=30000/1001,interlace-mode=progressive ! timeoverlay ! timecodestamper ! combiner.video \
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audiotestsrc freq=440 ! audio/x-raw,format=S32LE,rate=48000,channels=16 ! audiobuffersplit output-buffer-duration=1/30 ! combiner.audio \
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ajasinkcombiner name=combiner ! ajasink channel=0
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```
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Capture 1080p30 audio/video and directly output it again on the same card
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```sh
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gst-launch-1.0 ajasrc video-format=1080p-3000 channel=1 input-source=sdi-1 audio-system=2 ! ajasrcdemux name=d \
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d.video ! queue max-size-bytes=0 max-size-buffers=0 max-size-time=1000000000 ! c.video \
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d.audio ! queue max-size-bytes=0 max-size-buffers=0 max-size-time=1000000000 ! c.audio \
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ajasinkcombiner name=c ! ajasink channel=0 reference-source=input-1
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```
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