Skip to content

docs(accessories): use single-line command for HDMI audio capture test #2132

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Milir-Radxa merged 1 commit into from
Sep 20, 2026
Merged

docs(accessories): use single-line command for HDMI audio capture test #2132

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
19 changes: 2 additions & 17 deletions docs/common/accessories/_hdmi-in-to-mipi-csi2-usage.mdx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -115,25 +115,10 @@ rk628_csi_format_change: New format: 1920x1080p60.00 (2200x1125)

确认主板已连接耳机或音箱，并且 HDMI 输出设备的音频已经输出到 HDMI。

以下命令在后台保持约 8 秒视频取流，同时录制 5 秒 WAV 文件。由于 RK628 的音频输出需要视频采集链路保持运行，录制期间不能停止视频取流。
以下为单行命令，可直接复制执行：在后台保持约 8 秒视频取流，同时录制 5 秒 WAV 文件。由于 RK628 的音频输出需要视频采集链路保持运行，录制期间不能停止视频取流。

<pre style={{ whiteSpace: "pre-wrap", overflowX: "auto" }}>
{`v4l2-ctl -d ${props.video_dev} \\
--set-fmt-video=width=1920,height=1080,pixelformat=NV12 \\
--stream-mmap=3 --stream-poll \\
--stream-count=480 --stream-to=/dev/null \\
>/dev/null 2>&1 &
VIDEO_PID=$!

sleep 1

arecord \\
-D hw:CARD=${props.audio_capture_card},DEV=0 \\
-f S16_LE -r 48000 -c 2 \\
-d 5 -t wav \\
rk628-audio.wav

wait "$VIDEO_PID"`}
{`bash -c 'v4l2-ctl -d ${props.video_dev} --set-fmt-video=width=1920,height=1080,pixelformat=NV12 --stream-mmap=3 --stream-poll --stream-count=480 --stream-to=/dev/null >/dev/null 2>&1 & video_pid=$!; sleep 1; arecord -D hw:CARD=${props.audio_capture_card},DEV=0 -f S16_LE -r 48000 -c 2 -d 5 -t wav rk628-audio.wav; wait "$video_pid"'`}
</pre>

视频数据写入 `/dev/null`，不会生成视频文件。
Expand Down
19 changes: 2 additions & 17 deletions ...-plugin-content-docs/current/common/accessories/_hdmi-in-to-mipi-csi2-usage.mdx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -115,25 +115,10 @@ If the picture is corrupted, power off the board, recheck the hardware connectio

Make sure a headphone or speaker is connected to the board, and that the audio of the HDMI output device is routed to HDMI.

The following command keeps the video stream running in the background for about 8 seconds and records a 5-second WAV file. Because the RK628 audio output requires the video capture pipeline to keep running, the video stream must not be stopped while recording.
The following is a single-line command you can copy and run directly: it keeps the video stream running in the background for about 8 seconds while recording a 5-second WAV file. Because the RK628 audio output requires the video capture pipeline to keep running, the video stream must not be stopped while recording.

<pre style={{ whiteSpace: "pre-wrap", overflowX: "auto" }}>
{`v4l2-ctl -d ${props.video_dev} \\
--set-fmt-video=width=1920,height=1080,pixelformat=NV12 \\
--stream-mmap=3 --stream-poll \\
--stream-count=480 --stream-to=/dev/null \\
>/dev/null 2>&1 &
VIDEO_PID=$!

sleep 1

arecord \\
-D hw:CARD=${props.audio_capture_card},DEV=0 \\
-f S16_LE -r 48000 -c 2 \\
-d 5 -t wav \\
rk628-audio.wav

wait "$VIDEO_PID"`}
{`bash -c 'v4l2-ctl -d ${props.video_dev} --set-fmt-video=width=1920,height=1080,pixelformat=NV12 --stream-mmap=3 --stream-poll --stream-count=480 --stream-to=/dev/null >/dev/null 2>&1 & video_pid=$!; sleep 1; arecord -D hw:CARD=${props.audio_capture_card},DEV=0 -f S16_LE -r 48000 -c 2 -d 5 -t wav rk628-audio.wav; wait "$video_pid"'`}
</pre>

The video data is written to `/dev/null`, so no video file is generated.
Expand Down
Loading