Investigate /gpWebcam endpoint

KonradIT / goprowifihack

Unofficial GoPro WiFi API Documentation - HTTP GET requests for commands, status, livestreaming and media query.

Apache License 2.0

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Investigate /gpWebcam endpoint #206

Closed gordonel closed 3 years ago

gordonel commented 3 years ago

Not really a problem, but a suggestion.

GoPro released GoPro Webcam software for HERO8/9 and added an endpoint at /gp/gpWebcam. I figured out /gp/gpWebcam/START and /gp/gpWebcam/STOP commands. gp/gpWebcam/status returns an empty array.

Also, it completely ignores any settings set via gpControl. I have a HERO9 and can collaborate on this if you'd like

KonradIT commented 3 years ago

Hi, I have a HERO9 as well, I am preparing a full documentation of gpWebcam and all of the Hero9 commands via BT-LE and WiFi (some WiFi commands have been deprecated).

gordonel commented 3 years ago

Good to know. Found something in https://github.com/gurgelx/GoProBetaHelper/blob/master/GoProConnector/GoProClient.cs

KonradIT commented 3 years ago

Working on it... https://twitter.com/konrad_it/status/1309072047272873985

rmoriz commented 3 years ago

curl http://172.28.128.51/gp/gpWebcam/STOP

curl http://172.28.128.51/gp/gpControl/setting/43/0 curl http://172.28.128.51/gp/gpControl/setting/43/4 curl http://172.28.128.51/gp/gpControl/setting/43/6

curl http://172.28.128.51/gp/gpWebcam/STARTLTP?res=12

GoPro Hero8 via USB on MacOS seems to use ethernet over usb/cdc_usb. http requests easily to sniff with wireshark just focus on the interface.

Trigger seems to be UDP "ª¿½1ÜQF÷E*h3@¹ì¬7¬3úÛ!j®%GPHD:1:0:2:0"

That said still having issues with ffmpeg :(

gordonel commented 3 years ago

curl http://172.28.128.51/gp/gpWebcam/STARTLTP?res=12

This is something new

KonradIT commented 3 years ago

Don't use LTP, that's for low resolution preview.

KonradIT commented 3 years ago

Also, I have a PR open in gopro-py-api: https://github.com/KonradIT/gopro-py-api/pull/148

Feel free to fork the project and add your webcam examples there.

So far, my planned usage of gpWebcam is:

Use FFmpeg and v4l2loopback to create a native /dev/videoX driver, and use NetworkManager dispatch script to do Webcam START when the camera is plugged into my PC, then have an applet to start/stop the FFmpeg thread and turn on/off camera, change resolution, FOV...
Use FFmpeg to record 30 second video off the GoPro or take a screencap all via USB and upload to my NAS, this will be running on a raspberry pi because I need to monitor my crops

KonradIT commented 3 years ago

Wow, gpWebcam is truly the gift that keeps on giving. Just made a flask app that displays my media nicely in a web browser and can play back/delete/download. http://github.com/konradit/goprodashboard

This is miles ahead of MTP connection.

KonradIT commented 3 years ago

Closing this as the information has been added: https://github.com/KonradIT/goprowifihack/commit/4dcd1fb32905d88c8725b380874afe11d822a23a

gordonel commented 3 years ago

Thanks @KonradIT. Do you know if FOV and resolution are the only settings you can change for gpWebcam or is there a way to use manual exposure and, say, flat colour?

KonradIT commented 3 years ago

Cannot seem to change any setting over Webcam mode when the webcam is active, which is a huge bummer. This is what I get:

{
"version": "6.00",
"path_info": "setting/102/6",
"query_string": "",
"error_code":-1,
"error_msg": "500 Internal Server Error
",
"function": "gpcontrol_cgi_handler",
"line": 190
}

Perhaps GoPro can add custom ProTune controls to Webcam because I want to lower the max/min ISO to 100-400 like I always have on video mode, have a warmer white balance and use flat color.

gordonel commented 3 years ago

it seems to be the same on the latest firmware. Can you verify?