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To turn a picture to a certain angle RTMP metadata containing ‘orientation’ field should be sent. The following orientations are supported:
Значение поля | Угол поворота в градусах |
0 | 0 |
1 | 90 |
2 | 180 |
3 | 270 |
A picture is rotated clockwise.
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Note that orientation value should be sent but not angle itself.
How to rotate stream published from ffmpeg
ffmpeg RTMP encoder allows to send orientation metadata to WCS server using command line switches:
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ffmpeg -i input.mp4 -metadata:s:v rotate=90 -vcodec copy -acodec copy -strict -2 -f flv rtmp://test1.flashphoner.com:1935/live/stream_ffmpeg |
Note that ffmpeg sends orientattion value but not angle itself.
Known issues
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