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MX Can't see video camera.

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Toastrack
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MX Can't see video camera.

#1 Post by Toastrack » Wed Aug 08, 2018 3:34 pm

I have a Panasonic NV-GS27 video camera, which records on digital tapes.
On the old WinXP I had no trouble uploading videos. But now I'm MX-fied I cannot upload either to file or to editing programs.
The camera has a jack to which the supplied cable is connected, this cable terminated in 3xRCA connecdtors and, alternatively, a composite video connector. As previously, the three rca connectors go to a USB adaptor connected to a USB socket on the PC. On WinXP it just worked; now with MX I can find no way of communicating with it either with Thunar (for a file upload) or with video-editing programs. MX appear just not to see it.
Please, where have I messed up, and what should I do to get working something which should be so simple ??

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timkb4cq
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Re: MX Can't see video camera.

#2 Post by timkb4cq » Wed Aug 08, 2018 3:56 pm

The usb adapter you mention is a form of video capture card. Some of them have good Linux drivers, some don't. Some need firmware.
With the usb adapter plugged in, open a terminal and run:

Code: Select all

lsusb
and paste the output back here so we can see exactly which adapter you have. Also let us know if there is any make/model info you have on it, as occasionally a company will use the same usb ID on different devices (they're not really supposed to - but I've seen it).
MSI 970A-G43 MB, AMD FX-6300 (six core), 16GB RAM, GeForce 730, Samsung 850 EVO 250GB SSD, Seagate Barracuda XT 3TB

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m_pav
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Re: MX Can't see video camera.

#3 Post by m_pav » Fri Aug 10, 2018 7:07 am

Here's another way to do it, but watching the terminal output live as it happens. As Tim said above, open a terminal, resize the window so it will be wide and tall enough to write most kernel messages without text wrapping, which would otherwise make it more difficult to read. Do this exercise once or twice to get a feel for how much to resize the terminal window. Try plugging in a thumb drive or a printer to get a feel for how it works.

Type, or copy and paste the following command:

Code: Select all

watch "dmesg | tail -30"
The -30 simply tells it to display the last 30 lines, you can adjust it to suit your display and screen real-estate. Please note, the character after dmesg is not the letter L or I, it is a pipe, usually found on US keyboards by pressing SHIFT + \ Check you keyboard to find the pipe and use that.

Now here's the fun part. Start the command with your USB tuner card disconnected, then plug it in and watch the kernel messages. You should see some text fly by moments after the device is connected, then the terminal text will settle.

Don't be concerned with the strange meaningless numbers at the start of each line, but look for a clue as to what the system registers the device as. This is your first clue as to what to point your preferred capture app to use as its input source, and what we need here to assist you further.

To copy terminal text, make sure you first have a suitable text editor or blank document page open (or a compose window in this forum will do too) and simply highlight what you want to copy by clicking and dragging your mouse over the block of text in the terminal window, release the mouse button, then switch to the waiting open blank document (or this forum) and using the centre mouse button (usually the scroll wheel), centre click where you want the contents to appear and the highlighted text will be pasted in. This will assist you with posting relevant content back to the forum.

Press "Ctrl + c" to cancel the watch process in the terminal, but don't do it before you've copied the much required text.

From here you will be able to move forward. Generally, if the kernel configures the device and gives it a particular device node, the driver will already be working. There are plenty of people here who can assist you further once you have this information if I am unable to.
Mike P

Regd Linux User #472293
(Mine)Lenovo T560, i7-6600U, 16GB, 2.0TB SSHD, MX17 64-bit
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Toastrack
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Re: MX Can't see video camera.

#4 Post by Toastrack » Mon Aug 13, 2018 12:11 pm

Sorry for my delay in replying - I got no notification. My fault!
The following was what I got, with the camera connected and switched ON:-

root@mx1:/home/howard# lsusb
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 002: ID 13ba:0018 PCPlay Barcode PCP-BCG4209
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 003: ID 0581:0101 Racal Data Group
Bus 007 Device 002: ID 04a9:220d Canon, Inc. CanoScan N670U/N676U/LiDE 20
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter
Bus 001 Device 003: ID 058f:9360 Alcor Micro Corp. 8-in-1 Media Card Reader
Bus 001 Device 002: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

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timkb4cq
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Re: MX Can't see video camera.

#5 Post by timkb4cq » Mon Aug 13, 2018 1:32 pm

Apart from the hubs, which are not relevant here, we have:

Barcode Scanner - Bus 008 Device 002: ID 13ba:0018 PCPlay Barcode PCP-BCG4209
Generic Mouse - - -Bus 007 Device 003: ID 0581:0101 Racal Data Group
Flatbed Scanner - -Bus 007 Device 002: ID 04a9:220d Canon, Inc. CanoScan N670U/N676U/LiDE 20
USB Sound Card - - Bus 001 Device 004: ID 0d8c:000c C-Media Electronics, Inc. Audio Adapter
Card Reader - - - - Bus 001 Device 003: ID 058f:9360 Alcor Micro Corp. 8-in-1 Media Card Reader

I don't see the capture card. m_pav's suggestion is the next step to see what is happening here.
MSI 970A-G43 MB, AMD FX-6300 (six core), 16GB RAM, GeForce 730, Samsung 850 EVO 250GB SSD, Seagate Barracuda XT 3TB

Toastrack
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Re: MX Can't see video camera.

#6 Post by Toastrack » Mon Aug 13, 2018 2:46 pm

I took up m_pav's suggestion, and could see no difference in the display whether the video capture device was pluged in or not. This suggests to me that either it's not working, or it's not seen.
Rather than waste everyone's time, I am expecting a replacement new device in the next couple of days; when this comes, if stil no progress, I will repeat the tests and report back.
In the meantime, many thanks.

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