Re: Live view on Canon EOS M50

Hi Antonio.

Just now I am also testing LiveView with my 6D. However, I am able to get
streaming on VLC Player using below gPhoto2 CLI's. Though I am
experiencing a few sec delay.

gphoto2 --set-config viewfinder=1
gphoto2 --capture-movie --stdout | ffmpeg -re -i pipe:0 -listen 1 -f mjpeg
http://10.10.10.253:8080/feed.mjpg

Note: The IP 10.10.10.253 is the Linux Board IP where my 6D is connected. I
found using "localhost" or "127.0.0.1" the stream did not work in my case.
But you can try.

To view the stream I added the URL "http://10.10.10.253:8080/feed.mjpg"
under Network Stream in VLC player.

Most parts of your other ques also I am interested to know. Looking forward
to hear from others suggestion.

Thanks.

Regards.
Nazmus Sakib.

On Sat, May 16, 2020 at 9:28 PM Antonio Cuni <[email protected]> wrote:

> Hello,
> I am having some troubles to control my Canon EOS M50 with gphoto2 (on
> Linux):
> $ gphoto2 --version
> gphoto2 2.5.20
> [...]
> gphoto2         2.5.20         gcc, popt(m), exif, cdk, aa, jpeg, readline
> libgphoto2      2.5.22         all camlibs, gcc, ltdl, EXIF
> libgphoto2_port 0.12.0         iolibs: disk ptpip serial usb1
> usbdiskdirect usbscsi, gcc, ltdl, USB, serial without locking
>
> What I would like to do is the following:
> 1. enable live view and get a stream of jpg frames to process
> 2. keep the camera's LCD screen on during the live view, and being able to
> control the various settings from the camera (ISO, speed, focus, etc)
>
> I tried to connect my camera to a windows PC and control it using Canon
> EOS Utility: the "live view mode" of that program does exactly what I want,
> i.e. it displays a real time stream of images on the windows computer, but
> I can still control all the settings from the camera. So, this should prove
> that the camera is capable of doing this, I suppose.
> However, I did not manage to achieve the same with gphoto2. I tried to
> connect the camera both via USB and Wi-Fi, and I get the same results in
> both cases.
>
> The first thing to note that as soon as gphoto2 connects to my camera, for
> example with gphoto2 --config, the LCD turns off and the camera buttons are
> not responding: I suppose this is the normal behavior and it's intended.
> When gphoto2 exists, the LCD is still black, but the buttons work; in
> particular, if I press the shutter the camera takes a picture, and if I
> press "Menu" I can enter the menu. Once I do exit the menu, the LCD works
> again and I can use the camera as normal.
>
> The first things which I tried was "gphoto2 --capture-movie --stdout":
> this works, and I can get a real time stream of frames. However, as soon as
> I start gphoto2, the camera LCD turns off and I can no longer control my
> camera using any button.
>
> Then, I inspected gphoto2 --config, and I found a setting which looks
> promising: /main/settings/output:
> /main/settings/output
> Label: Camera Output
> Readonly: 0
> Type: RADIO
> Current: Unknown value 0008
> Choice: 0 Off
> Choice: 1 TFT
> Choice: 2 PC
> Choice: 3 TFT + PC
> Choice: 4 Setting 4
> Choice: 5 Setting 5
> Choice: 6 Setting 6
> Choice: 7 Setting 7
> Choice: 8 Unknown value 0008
> Choice: 9 Unknown value 0009
> Choice: 10 Unknown value 000a
> Choice: 11 Unknown value 000b
> END
>
> The setting "TFT + PC" looks exactly what I need, and indeed it seems to
> do something. The following command turns the LCD back on:
>     $ gphoto2 --set-config output="TFT + PC"
>
> However, it seems I can't use it together with --capture-movie. I tried
> the following, but I get the same result as a bare "--capture-movie", i.e.
> the LCD turns off. Moreover, as soon as gphoto2 exits,
> /main/settings/output is set back to "Unknown value 0008":
>     $ gphoto2 --set-config output="TFT + PC" --capture-movie
>     CTRL-C
>     $ gphoto2 --get-config=output
>     Label: Camera Output
>
>     [...]
>     Current: Unknown value 0008
>
> I tried all of the possible "Camera Output" settings: same result with all
> of them, apart 000a and 000b which cause an "Error 70" in the camera, for
> which I have to remove the battery in order to have it working again.
>
> The same happens also inside gphoto2 --shell:
>
> gphoto2: {/tmp} /> capture-preview  # this turns the LCD OFF
> gphoto2: {/tmp} /> set-config-index output=3 # LCD back ON
> gphoto2: {/tmp} /> capture-preview # LCD OFF
> [etc...]
>
> I attach the output of gphoto2 --list-all-config, in case it's useful.
>
> Does anybody have any idea?
> Thanks in advance,
> Antonio
> _______________________________________________
> Gphoto-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/gphoto-user
>

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