Cam analog + Easycap + Ubuntu + VLC : no capture

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Erreur
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Cam analog + Easycap + Ubuntu + VLC : no capture

Postby Erreur » 23 Nov 2022 10:03

I am looking to transfer video from a small camera.

Working environment:
JVC GR-D720E
Easycap (usb key)
Ubuntu 22.04
VLC


On VLC I try to capture the stream by
"Open a capture device".
"Analog TV"

I am stuck for the moment on, it seems, the definition of the video standard, ... But is it really the case ?

lsusb :

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... Bus 002 Device 002: ID 1c88:0007 Somagic, Inc. SMI Grabber (EasyCAP DC60+ clone) (no firmware) [SMI-2021CBE] ...
v4l2-ctl -n :

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ioctl: VIDIOC_ENUMINPUT Input : 0 Name : loopback Type : 0x00000002 (Camera) Audioset : 0x00000000 Tuner : 0x00000000 Standard : 0x0000000000000000 () Status : 0x00000000 (ok) Capabilities: 0x00000000 (not defined)

v4l2-ctl -I :

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Video input : 0 (loopback: ok)

Here is the VLC log:

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main debug: processing request item: v4l2:///dev/video0, node: Liste de lecture, skip: 0 main debug: rebuilding array of current - root Liste de lecture main debug: rebuild done - 6 items, index 5 main debug: starting playback of new item main debug: resyncing on v4l2:///dev/video0 main debug: v4l2:///dev/video0 is at 5 main debug: creating new input thread main debug: Creating an input for 'v4l2:///dev/video0' main debug: requesting art for new input thread main debug: using timeshift granularity of 50 MiB main debug: using default timeshift path main debug: `v4l2:///dev/video0' gives access `v4l2' demux `any' path `/dev/video0' main debug: creating demux: access='v4l2' demux='any' location='/dev/video0' file='/dev/video0' main debug: looking for access_demux module matching "v4l2": 21 candidates v4l2 debug: opening device '/dev/video0' v4l2 debug: device Dummy video device (0x0000) using driver v4l2 loopback (version 5.15.64) on platform:v4l2loopback-000 v4l2 debug: with capabilities 0x05200003 (overall 0x85200003) v4l2 debug: video input loopback (0) is camera v4l2 debug: selected input 0 v4l2 debug: no video standard selection v4l2 debug: no tuning required (analog baseband input) v4l2 debug: no audio input available main debug: looking for meta fetcher module matching "any": 1 candidates v4l2 error: cannot negotiate supported video format lua debug: Trying Lua scripts in /home/eric/snap/vlc/3078/.local/share/vlc/lua/meta/fetcher v4l2 debug: opening device '/dev/video0' lua debug: Trying Lua scripts in /snap/vlc/3078/usr/lib/vlc/lua/meta/fetcher v4l2 debug: device Dummy video device (0x0000) using driver v4l2 loopback (version 5.15.64) on platform:v4l2loopback-000 v4l2 debug: with capabilities 0x05200003 (overall 0x85200003) v4l2 error: not a radio tuner device qt debug: IM: Setting an input lua debug: Trying Lua scripts in /snap/vlc/3078/usr/share/vlc/lua/meta/fetcher main debug: no access_demux modules matched main debug: creating access: v4l2:///dev/video0 main debug: (path: /dev/video0) main debug: looking for access module matching "v4l2": 29 candidates main debug: no meta fetcher modules matched v4l2 debug: opening device '/dev/video0' main debug: looking for art finder module matching "any": 2 candidates v4l2 debug: device Dummy video device (0x0000) using driver v4l2 loopback (version 5.15.64) on platform:v4l2loopback-000 v4l2 debug: with capabilities 0x05200003 (overall 0x85200003) v4l2 debug: video input loopback (0) is camera v4l2 debug: selected input 0 v4l2 debug: no video standard selection v4l2 debug: no tuning required (analog baseband input) v4l2 debug: no audio input available lua debug: Trying Lua scripts in /home/eric/snap/vlc/3078/.local/share/vlc/lua/meta/art v4l2 error: cannot get default format: Invalid argument lua debug: Trying Lua scripts in /snap/vlc/3078/usr/lib/vlc/lua/meta/art main debug: no access modules matched lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/00_musicbrainz.luac main debug: dead input main debug: changing item without a request (current 5/6) main debug: nothing to play lua debug: skipping script (unmatched scope) /snap/vlc/3078/usr/lib/vlc/lua/meta/art/00_musicbrainz.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/01_googleimage.luac lua debug: skipping script (unmatched scope) /snap/vlc/3078/usr/lib/vlc/lua/meta/art/01_googleimage.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/02_frenchtv.luac lua debug: skipping script (unmatched scope) /snap/vlc/3078/usr/lib/vlc/lua/meta/art/02_frenchtv.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/03_lastfm.luac lua debug: skipping script (unmatched scope) /snap/vlc/3078/usr/lib/vlc/lua/meta/art/03_lastfm.luac lua debug: Trying Lua scripts in /snap/vlc/3078/usr/share/vlc/lua/meta/art main debug: no art finder modules matched main debug: looking for meta fetcher module matching "any": 1 candidates lua debug: Trying Lua scripts in /home/eric/snap/vlc/3078/.local/share/vlc/lua/meta/fetcher lua debug: Trying Lua scripts in /snap/vlc/3078/usr/lib/vlc/lua/meta/fetcher lua debug: Trying Lua scripts in /snap/vlc/3078/usr/share/vlc/lua/meta/fetcher main debug: no meta fetcher modules matched main debug: looking for art finder module matching "any": 2 candidates lua debug: Trying Lua scripts in /home/eric/snap/vlc/3078/.local/share/vlc/lua/meta/art lua debug: Trying Lua scripts in /snap/vlc/3078/usr/lib/vlc/lua/meta/art lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/00_musicbrainz.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/01_googleimage.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/02_frenchtv.luac lua debug: Trying Lua playlist script /snap/vlc/3078/usr/lib/vlc/lua/meta/art/03_lastfm.luac lua debug: Trying Lua scripts in /snap/vlc/3078/usr/share/vlc/lua/meta/art main debug: no art finder modules matched qt debug: IM: Deleting the input

Rémi Denis-Courmont
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Re: Cam analog + Easycap + Ubuntu + VLC : no capture

Postby Rémi Denis-Courmont » 24 Nov 2022 20:28

It looks like your unofficial V4L2 driver is badly broken and fails to indicate what video format it supports.
Rémi Denis-Courmont
https://www.remlab.net/
Private messages soliciting support will be systematically discarded

Erreur
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Re: Cam analog + Easycap + Ubuntu + VLC : no capture

Postby Erreur » 25 Nov 2022 10:26

It looks like your unofficial V4L2 driver is badly broken and fails to indicate what video format it supports.
Well ... Tanks ... Don't understand why, it's a new istall for the driver.

Ok I give up. I had an old wirefire card, I just placed it in my computer and it's working fine in command line.

Tanks for your suggestion.


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