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The device is set to /dev/video0. Looking in /dev, I can see
/dev/video0 - but I cannot see anything else relevant.<br>
<br>
xawtv uses /dev/video0 and then sets the input from "input =
Television | Composite1 | S-Video | ..." - but I cannot see how to
do that with v4l2src. I think that it is defaulting to
"Television".<br>
<br>
Ian<br>
<br>
<div class="moz-cite-prefix">On 11/12/2012 13:10, Krzysztof Konopko
wrote:<br>
</div>
<blockquote cite="mid:50C730D8.5040408@youview.com" type="cite">
<pre wrap="">Have a look at the 'device' property. Your input should be represented
as a device in the file system. You need to find out which one it is and
set it through the 'device' property of the v4l2src element.
Kris
On 11/12/12 12:55, Ian Davidson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Actually, not 100% success.
I reboot the computer and repeated the test and I think that this time,
it picked up the 'Television' input again, not the Composite1.
I have listed the output from gst-inspect-1.0 below. I do not see
anything which relates to the input selection.
[ian@localhost ~]$ gst-inspect-1.0 v4l2src
Factory Details:
Rank: primary (256)
Long-name: Video (video4linux2) Source
Klass: Source/Video
Description: Reads frames from a Video4Linux2 device
Author: Edgard Lima <a class="moz-txt-link-rfc2396E" href="mailto:edgard.lima@indt.org.br"><edgard.lima@indt.org.br></a>, Stefan Kost
<a class="moz-txt-link-rfc2396E" href="mailto:ensonic@users.sf.net"><ensonic@users.sf.net></a>
Plugin Details:
Name: video4linux2
Description: elements for Video 4 Linux
Filename: /usr/lib64/gstreamer-1.0/libgstvideo4linux2.so
Version: 1.0.3
License: LGPL
Source module: gst-plugins-good
Source release date: 2012-11-21
Binary package: Fedora GStreamer-plugins-good package
Origin URL: <a class="moz-txt-link-freetext" href="http://download.fedoraproject.org">http://download.fedoraproject.org</a>
GObject
+----GInitiallyUnowned
+----GstObject
+----GstElement
+----GstBaseSrc
+----GstPushSrc
+----GstV4l2Src
Implemented Interfaces:
GstURIHandler
GstTuner
GstColorBalance
GstVideoOrientation
Pad Templates:
SRC template: 'src'
Availability: Always
Capabilities:
video/x-raw
format: RGB15
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: RGB16
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: BGR
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: RGB
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: BGRx
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: RGBx
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: GRAY8
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: YVU9
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: YV12
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: YUY2
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: UYVY
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: Y42B
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: Y41B
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: NV12
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: NV21
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: YUV9
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: I420
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-bayer
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
image/jpeg
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
image/jpeg
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
image/jpeg
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-dv
systemstream: true
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/mpegts
video/x-h264
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-sonix
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-pwc1
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-pwc2
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
video/x-raw
format: YVYU
width: [ 1, 32768 ]
height: [ 1, 32768 ]
framerate: [ 0/1, 100/1 ]
Element Flags:
no flags set
Element Implementation:
Has change_state() function: 0x7f1ee15510c0
Element has no clocking capabilities.
Element has no indexing capabilities.
URI handling capabilities:
Element can act as source.
Supported URI protocols:
v4l2
Pads:
SRC: 'src'
Implementation:
Has getrangefunc(): gst_base_src_getrange
Has custom eventfunc(): gst_base_src_event
Has custom queryfunc(): gst_base_src_query
Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
Pad Template: 'src'
Element Properties:
name : The name of the object
flags: readable, writable
String. Default: "v4l2src0"
parent : The parent of the object
flags: readable, writable
Object of type "GstObject"
blocksize : Size in bytes to read per buffer (-1 = default)
flags: readable, writable
Unsigned Integer. Range: 0 - 4294967295 Default:
4096
num-buffers : Number of buffers to output before sending EOS
(-1 = unlimited)
flags: readable, writable
Integer. Range: -1 - 2147483647 Default: -1
typefind : Run typefind before negotiating
flags: readable, writable
Boolean. Default: false
do-timestamp : Apply current stream time to buffers
flags: readable, writable
Boolean. Default: false
device : Device location
flags: readable, writable
String. Default: "/dev/video0"
device-name : Name of the device
flags: readable
String. Default: "BT878 video (Pinnacle PCTV Stud"
device-fd : File descriptor of the device
flags: readable
Integer. Range: -1 - 2147483647 Default: -1
flags : Device type flags
flags: readable
Flags "GstV4l2DeviceTypeFlags" Default:
0x00000000, "(none)"
(0x00000001): capture - Device
supports video capture
(0x00000002): output - Device
supports video playback
(0x00000004): overlay - Device
supports video overlay
(0x00000010): vbi-capture - Device
supports the VBI capture
(0x00000020): vbi-output - Device
supports the VBI output
(0x00010000): tuner - Device has a
tuner or modulator
(0x00020000): audio - Device has
audio inputs or outputs
brightness : Picture brightness, or more precisely, the black
level
flags: readable, writable, controllable
Integer. Range: -2147483648 - 2147483647 Default: 0
contrast : Picture contrast or luma gain
flags: readable, writable, controllable
Integer. Range: -2147483648 - 2147483647 Default: 0
saturation : Picture color saturation or chroma gain
flags: readable, writable, controllable
Integer. Range: -2147483648 - 2147483647 Default: 0
hue : Hue or color balance
flags: readable, writable, controllable
Integer. Range: -2147483648 - 2147483647 Default: 0
norm : video standard
flags: readable, writable
Enum "V4L2_TV_norms" Default: 0, "none"
(0): none - none
(45056): NTSC - NTSC
(4096): NTSC-M - NTSC-M
(8192): NTSC-M-JP - NTSC-M-JP
(32768): NTSC-M-KR - NTSC-M-KR
(16384): NTSC-443 - NTSC-443
(255): PAL - PAL
(7): PAL-BG - PAL-BG
(1): PAL-B - PAL-B
(2): PAL-B1 - PAL-B1
(4): PAL-G - PAL-G
(8): PAL-H - PAL-H
(16): PAL-I - PAL-I
(224): PAL-DK - PAL-DK
(32): PAL-D - PAL-D
(64): PAL-D1 - PAL-D1
(128): PAL-K - PAL-K
(256): PAL-M - PAL-M
(512): PAL-N - PAL-N
(1024): PAL-Nc - PAL-Nc
(2048): PAL-60 - PAL-60
(16711680): SECAM - SECAM
(65536): SECAM-B - SECAM-B
(262144): SECAM-G - SECAM-G
(524288): SECAM-H - SECAM-H
(3276800): SECAM-DK - SECAM-DK
(131072): SECAM-D - SECAM-D
(1048576): SECAM-K - SECAM-K
(2097152): SECAM-K1 - SECAM-K1
(4194304): SECAM-L - SECAM-L
(8388608): SECAM-Lc - SECAM-Lc
io-mode : I/O mode
flags: readable, writable
Enum "GstV4l2IOMode" Default: 0, "auto"
(0): auto - GST_V4L2_IO_AUTO
(1): rw - GST_V4L2_IO_RW
(2): mmap - GST_V4L2_IO_MMAP
(3): userptr - GST_V4L2_IO_USERPTR
Element Signals:
"prepare-format" : void user_function (GstElement* object,
gint arg0,
guint arg1,
guint arg2,
guint arg3,
gpointer user_data);
[ian@localhost ~]$
On 11/12/2012 12:15, Ian Davidson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Thanks,
I changed the command to
gst-launch-1.0 v4l2src norm=PAL !
'video/x-raw,format=(string)I420,width=320,height=240,framerate=(fraction)25/1'
! queue ! mux. alsasrc num-buffers=440 ! audioconvert !
'audio/x-raw,rate=44100,channels=2' ! queue ! mux. avimux name=mux !
filesink location=test.avi
and that then captured the video.
On 11/12/2012 11:32, Krzysztof Konopko wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Try using 'device' property of the v4l2src element.
For more info see:
gst-inspect-1.0 v4l2src
Kris
On 11/12/12 11:23, Ian Davidson wrote:
</pre>
<blockquote type="cite">
<pre wrap="">I suspect that GStreamer is not defaulting to the Composite1 source,
but
some other - so how do I convince it to use the Composite1?
</pre>
</blockquote>
<pre wrap="">_______________________________________________
gstreamer-devel mailing list
<a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a>
<a class="moz-txt-link-freetext" href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a>
</pre>
</blockquote>
<pre wrap="">
--
--
Ian Davidson
/239 Streetsbrook Road, Solihull, West Midlands, B91 1HE/
--
Facts used in this message may or may not reflect an underlying
objective reality. Facts are supplied for personal use only.
Recipients quoting supplied information do so at their own risk. Facts
supplied may vary in whole or part from widely accepted standards.
While painstakingly researched, facts may or may not be indicative of
actually occurring events or natural phenomena.
The author accepts no responsibility for personal loss or injury
resulting from memorisation and subsequent use.
_______________________________________________
gstreamer-devel mailing list
<a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a>
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</pre>
</blockquote>
<pre wrap="">
</pre>
</blockquote>
<pre wrap="">
</pre>
</blockquote>
<br>
<div class="moz-signature">-- <br>
--<br>
Ian Davidson<br>
<i>239 Streetsbrook Road, Solihull, West Midlands, B91 1HE</i><br>
--<br>
Facts used in this message may or may not reflect an underlying
objective reality. Facts are supplied for personal use only.<br>
Recipients quoting supplied information do so at their own risk.
Facts supplied may vary in whole or part from widely accepted
standards.<br>
While painstakingly researched, facts may or may not be indicative
of actually occurring events or natural phenomena.<br>
The author accepts no responsibility for personal loss or injury
resulting from memorisation and subsequent use.
</div>
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