Support for HW accelerated Image Grabbing #199

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opened 2025-12-23 10:35:44 +01:00 by backuprepo · 3 comments

backuprepo commented

2025-12-23 10:35:44 +01:00

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Originally created by @defencedog on GitHub (Aug 12, 2025).

I am extracting images from my webcam v380 & processing them in RKNPU. Is there a code which can make this process use GPU? I am on RK3566 & am successfully using h264_rkmpp for video recording.

My script is v380 -u xxxx -p xxxx -addr 192.168.1.xxx | ffmpeg -i - -f image2 -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" -y

It gives me screenshot after every ~1 sec ... I did have to play with choices fps=1,3,5

Originally created by @defencedog on GitHub (Aug 12, 2025). I am extracting images from my webcam v380 & processing them in RKNPU. Is there a code which can make this process use GPU? I am on RK3566 & am successfully using `h264_rkmpp` for video recording. My script is `v380 -u xxxx -p xxxx -addr 192.168.1.xxx | ffmpeg -i - -f image2 -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" -y` It gives me screenshot after every ~1 sec ... I did have to play with choices `fps=1,3,5`

backuprepo

2025-12-23 10:35:44 +01:00

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backuprepo commented

2025-12-23 10:35:45 +01:00

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@nyanmisaka commented on GitHub (Aug 13, 2025):

Isn't there an mjpeg_rkmpp hardware encoder?

 V..... mjpeg_rkmpp          Rockchip MPP (Media Process Platform) MJPEG encoder (codec mjpeg)

@nyanmisaka commented on GitHub (Aug 13, 2025): Isn't there an `mjpeg_rkmpp` hardware encoder? ``` V..... mjpeg_rkmpp Rockchip MPP (Media Process Platform) MJPEG encoder (codec mjpeg) ```

backuprepo commented

2025-12-23 10:35:45 +01:00

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@defencedog commented on GitHub (Aug 14, 2025):

Should I use ffmpeg -i - -f image2 -c:v mjpeg_rkmpp -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" or should omit -f image2 ... I see no difference

@defencedog commented on GitHub (Aug 14, 2025): Should I use `ffmpeg -i - -f image2 -c:v mjpeg_rkmpp -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" ` or should omit `-f image2` ... I see no difference

backuprepo commented

2025-12-23 10:35:46 +01:00

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@nyanmisaka commented on GitHub (Aug 14, 2025):

-f image2 is not important. As long as -c:v mjpeg_rkmpp does not fail, hardware encoding is already enabled.

@nyanmisaka commented on GitHub (Aug 14, 2025): `-f image2` is not important. As long as `-c:v mjpeg_rkmpp` does not fail, hardware encoding is already enabled.