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Describe playbin better

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Matthew Clark 2018-02-23 08:07:52 +00:00
parent c48760ecab
commit c1349815a3
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17
basics.md
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@ -10,17 +10,25 @@ export SRC=/home/me/videos/test.mp4
### Play a video (with audio)
`playbin` is a magical element that can play anything:
```
gst-launch-1.0 -v playbin uri=file://$SRC
gst-launch-1.0 playbin uri=file://$SRC
```
or, if you'd rather have more control of the pipeline:
This works with video, audio, RTMP streams, and so much more.
The 'bin' in 'playbin' means that under-the-hood, it's a collection of elements. For example, we can achieve the same thing by going to the next level of elements, which separate the decoding part from the playing part:
```
gst-launch-1.0 filesrc location=$SRC ! decodebin ! playsink
```
Or, we can split down even further:
```
gst-launch-1.0 filesrc location=$SRC ! \
qtdemux name=demux demux.audio_0 ! queue ! decodebin ! audioconvert ! audioresample ! \
qtdemux name=demux demux.audio_0 ! queue ! decodebin ! audioconvert ! audioresample ! \
autoaudiosink \
demux.video_0 ! queue ! \
decodebin ! videoconvert ! videoscale ! autovideosink
@ -88,3 +96,4 @@ gst-launch-1.0 -v \
decodebin ! videoconvert ! videoscale ! video/x-raw,width=100 ! videorate ! video/x-raw,framerate=5/1 ! \
autovideosink
```