Rockchip Camera "VIDIOC_STREAMON returned -1 (Broken pipe)": Fix
VIDIOC_STREAMON returned -1 (Broken pipe)Streaming failed because the media pipeline is inconsistent. EPIPE means a link is disabled or formats/sizes do not match between the sensor, MIPI receiver and CIF/ISP entities.
Applies to: RK3588 RK3588S RK3576 RK3568 RK3566 RV1106 RV1126 RV1109
Symptoms
- v4l2-ctl --stream-mmap fails with "Broken pipe"
- media-ctl -p shows the sensor, but the capture node cannot stream
Common causes
- Pad formats (resolution / bus code) differ between linked entities
- A media link is not enabled
- data-lanes or link-frequencies differ between sensor and csi2 endpoints
- Capturing from the wrong /dev/videoN (ISP vs raw CIF node)
How to fix it
- Inspect the graph
media-ctl -p -d /dev/media0 - Match formats end to end
Make the sensor output format and size match the capture format you request, and enable any disabled links with media-ctl -l.
- Verify DT endpoints agree
data-lanes and link-frequencies must match on the sensor endpoint and the csi2_dphy/mipi_csi2 endpoint.
FAQ
What does "VIDIOC_STREAMON returned -1 (Broken pipe)" mean?
Streaming failed because the media pipeline is inconsistent. EPIPE means a link is disabled or formats/sizes do not match between the sensor, MIPI receiver and CIF/ISP entities.
What causes "VIDIOC_STREAMON returned -1 (Broken pipe)"?
Pad formats (resolution / bus code) differ between linked entities; A media link is not enabled; data-lanes or link-frequencies differ between sensor and csi2 endpoints; Capturing from the wrong /dev/videoN (ISP vs raw CIF node).
How do I fix "VIDIOC_STREAMON returned -1 (Broken pipe)"?
1. Inspect the graph 2. Match formats end to end: Make the sensor output format and size match the capture format you request, and enable any disabled links with media-ctl -l. 3. Verify DT endpoints agree: data-lanes and link-frequencies must match on the sensor endpoint and the csi2_dphy/mipi_csi2 endpoint.
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