Writing UVC frames to a file
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Re: Video recording from a 4k camera to a SD card.
Hello, I was wondering if I could get some assistance writing UVC frames to a file. This was mentioned in a previous post but I am not sure how to go about doing it.
Also, I have a script that could possibly save UVC camera video to the onboard SD card but I am not sure how to implement this script into VOXL.
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@Kris If you're just wanting to save frames I would take a look at https://docs.modalai.com/voxl-logger/
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@tom
At the moment, it’s only possible to write frames from a UVC camera with either RAW8, RAW16, NV12/21, or FLOAT32 formats. Does H.264 format fall into that criteria?
I am currently looking into purchasing a different UVC camera that has these output formats; H.264, MJPG, and YUY2.
Has H.264 standard compressed format been tested for writing files to the VOXL’s onboard SD card?
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Hi,
We're currently working on getting h264 encoding working in voxl-camera-server for our mipi hires cams, so this will be our default encoded format for those cameras as well. I believe uvc server would take a few small tweaks to accept that data and spit it out of a libmodal-pipe, but the support is already there on the other end, we know how to handle encoded frames on these pipes and we have a
voxl-record-videoon our dev branch that will take encoded frames over a pipe and write them to a file.
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Hello @Alex-Gardner,
I have tried looking for thisvoxl-record-videoin the dev branch, but could not find it. Was it removed recently?
I was looking in this location.
If this is the wrong location, could you please let me know where to find thevoxl-record-videoipk.
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voxl-record-videois a utility that is included in voxl-mpa-tools, see here (https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-mpa-tools/-/blob/dev/tools/voxl-record-video.c)
