Hi,

[Girisuryaa-LS]

Hi,

I tested the libcamera packages from the GitHub Actions artifact you provided.

Installation:

• Installed all .deb packages from the ZIP.
• Verified the system is using the new packages.
• cam -I reports libcamera v0.7.1.
• which cam returns /usr/bin/cam.
• ldd /usr/bin/cam and ldd /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstlibcamera.so both resolve to /lib/aarch64-linux-gnu/libcamera.so.0.7.
• Tuning file is loaded from /usr/share/libcamera/ipa/simple/imx219.yaml.

Current results:

• Camera is detected successfully.

• gst-launch-1.0 -v libcamerasrc ! fakesink negotiates caps successfully:

  • video/x-raw, format=RGBA, width=3200, height=2400, framerate=30/1

• Stream configuration messages appear normally.

However, the following issues remain:

Black preview:

gst-launch-1.0 libcamerasrc ! videoconvert ! autovideosink

The preview window opens but remains completely black.

H.264 recording:

gst-launch-1.0 -e libcamerasrc \
    ! videoconvert ! video/x-raw,format=NV12,width=1920,height=1080,framerate=30/1 \
    ! v4l2h264enc ! h264parse ! mp4mux \
    ! filesink location=/tmp/camera-h264.mp4

The pipeline starts without errors, but the resulting MP4 file is empty (0 bytes).

H.265 recording:

gst-launch-1.0 -e libcamerasrc \
    ! videoconvert ! video/x-raw,format=NV12,width=1920,height=1080,framerate=30/1 \
    ! v4l2h265enc ! h265parse ! mp4mux \
    ! filesink location=/tmp/camera-h265.mp4

The pipeline starts without errors, but the resulting MP4 file is empty (0 bytes).

JPEG capture:

gst-launch-1.0 -e libcamerasrc \
    ! videoconvert \
    ! jpegenc \
    ! multifilesink location=frame-%05d.jpg

No JPEG files are generated.

I also tested:

gst-launch-1.0 -v libcamerasrc ! identity silent=false ! fakesink

The pipeline reaches PLAYING state and caps are negotiated successfully, but I only see stream-start/caps/segment events and no indication that image buffers are flowing through the pipeline.

Additionally, the Venus encoder appears present:

v4l2-ctl --list-devices

shows:

Qualcomm Venus video encoder
/dev/video17
/dev/video18

and the encoder itself works with videotestsrc.

Is there any additional kernel package, firmware update, device-tree change, or newer artifact required besides the libcamera packages?

Thanks.

Originally posted by @giri13-spec in #1808 (reply in thread)