v4l2: v4l2_camera_proxy: Fix default frame interval
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Message ID 20261019015712.1817099-1-ragaprasanth@gmail.com
State New
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Series
  • v4l2: v4l2_camera_proxy: Fix default frame interval
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Commit Message

Prasanth R Oct. 19, 2026, 1:57 a.m. UTC 
The frame interval is meant to default to 30fps,
but it is set to 333333/1000000 seconds, which is 3fps.
Use 33333 microseconds instead.

Signed-off-by: Prasanth R <prasanth.r@lineo.co.jp>
---
Tested on a Raspberry Pi 4 (32-bit Arm) with a UVC webcam,

  $ libcamerify v4l2-ctl -d /dev/video0 --all | grep -i 'frames per second'
  before: Frames per second: 3.000 (1000000/333333)
  after:  Frames per second: 30.000 (1000000/33333)


 src/v4l2/v4l2_camera_proxy.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/src/v4l2/v4l2_camera_proxy.cpp b/src/v4l2/v4l2_camera_proxy.cpp
index 554e81f8d..7f8522d5e 100644
--- a/src/v4l2/v4l2_camera_proxy.cpp
+++ b/src/v4l2/v4l2_camera_proxy.cpp
@@ -274,7 +274,7 @@  void V4L2CameraProxy::setFmtFromConfig(const StreamConfiguration &streamConfig)
 		LOG(V4L2Compat, Warning)
 			<< "Camera does not support FrameDurationLimits";
 
-		v4l2TimePerFrame_.numerator = 333333;
+		v4l2TimePerFrame_.numerator = 33333;
 		v4l2TimePerFrame_.denominator = 1000000;
 	}
 }