On Wed, Apr 08, 2020 at 12:32:28PM -0700, Christopher Kao wrote:
> Hey Marcus,
>
> Thanks for sharing and keeping me in the loop.
>
> I tried running the command you provided and it errored. Please see the
> attached screenshot.
>
> As a sanity check, I did do a gphoto2 —summary and confirmed that the camera
> was connected.
>
> By the way, I think that if you are able to solve the PTP v1.1 streams on the
> Leica SL, then there is a good chance you will have solved it for the Leica
> SL2, Leica Q2, and a fleet of Panasonic mirrorless cameras because Leica
> cameras use Panasonic internals. This article may be a good reference for you
> on the MJPEG structures that Panasonic GH3 and Leica SL use for encoding
> MJPEG streams over UDP streams. I have a feeling they may do something for
> when the stream is over USB.
> http://www.personal-view.com/talks/discussion/6703/control-your-gh3-from-a-web-browser-now-with-video-/p1
>
> <http://www.personal-view.com/talks/discussion/6703/control-your-gh3-from-a-web-browser-now-with-video-/p1>
> I have actually reproduced what was said in the article and it works for me.
> I used a header offset of 171 bytes to get the beginning “”ff d8” which
> indicates a jpg file and ends with “ff d9”. Please see my second screenshot
> of that working - in that setup, I had created an iOS application which
> subscribes to the udp sockets and slices out the first 171 bytes of each
> message, then converts the binary file to base64 so that the underlying jpeg
> can be displayed. That was when my iOS app was connected to the wifi
> published by the Leica SL.
For Lumix I added actually code that does that (in the lumix WiFi driver ;)
I have now researched a bit more and added a bit more code.
If you could update to libgphoto2 current master again, build, install and then
gphoto2 --capture-preview --debug --debug-logfile=preview.log
and send the preview.log?
The camera might hang and need replugin / powercycle after this call due to the
streaming being endless and
me not having added the stopping yet. ;)
> By the way, have you seen anyone use gphoto2 on iOS before? Is it possible if
> a product has a MFI (Made for iPhone) license? I noticed that Hasselblad
> seems to be the first OEM to register a camera which is why their Phocus II
> iPad app supports controlling the camera from an iPad Pro over USB-C
> (https://mfi.apple.com/MFiWeb/getAPS <https://mfi.apple.com/MFiWeb/getAPS>
> and search by brand for “Hasselblad”).
I am not aware.
Ciao, Marcus
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