v4l2 issues with webcam encoded to H.264
I am trying to send a H.264 webcam video feed over wifi to another computer using gstreamer. I am using this tutorial as a guide. I am using a Creative Live! Cam Connect HD as my webcam. The website claims that the webcam has on-board H.264 encoder. But when I used v4l2-ctl I get the following:
$ v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
...
Index : 1
Type : Video Capture
Pixel Format: 'MJPG' (compressed)
Name : MJPEG
But when I use the --all flag I get a different pixel format.
v4l2-ctl -d 1 --all
Driver Info (not using libv4l2):
Driver name : uvcvideo
Card type : Live! Cam Connect HD VF0750
Bus info : usb-0000:00:14.0-1
Driver version: 3.5.7
Capabilities : 0x04000001
Video Capture
Streaming
Format Video Capture:
Width/Height : 640/360
Pixel Format : 'YUYV'
Field : None
Bytes per Line: 1280
Size Image : 460800
Colorspace : SRGB
...
I am not sure why I am getting two different pixel formats (MJPG and YUYV) but I was expecting to see Pixel Format: 'H264' (compressed) like in the tutorial I linked to.
I am running Ubuntu 12.1 with kernel version 3.5.0 Does anyone have any idea what my problems it? I would like to use H.264 instead on MJPG to save on bandwidth. Any ideas why it does not detect H.264? Thanks.
webcam h.264 video-encoding v4l2 gstreamer
asked Feb 11 '13 at 0:37
mashrurmashrur
613
add a comment |
I am trying to send a H.264 webcam video feed over wifi to another computer using gstreamer. I am using this tutorial as a guide. I am using a Creative Live! Cam Connect HD as my webcam. The website claims that the webcam has on-board H.264 encoder. But when I used v4l2-ctl I get the following:
$ v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
...
Index : 1
Type : Video Capture
Pixel Format: 'MJPG' (compressed)
Name : MJPEG
But when I use the --all flag I get a different pixel format.
v4l2-ctl -d 1 --all
Driver Info (not using libv4l2):
Driver name : uvcvideo
Card type : Live! Cam Connect HD VF0750
Bus info : usb-0000:00:14.0-1
Driver version: 3.5.7
Capabilities : 0x04000001
Video Capture
Streaming
Format Video Capture:
Width/Height : 640/360
Pixel Format : 'YUYV'
Field : None
Bytes per Line: 1280
Size Image : 460800
Colorspace : SRGB
...
I am not sure why I am getting two different pixel formats (MJPG and YUYV) but I was expecting to see Pixel Format: 'H264' (compressed) like in the tutorial I linked to.
I am running Ubuntu 12.1 with kernel version 3.5.0 Does anyone have any idea what my problems it? I would like to use H.264 instead on MJPG to save on bandwidth. Any ideas why it does not detect H.264? Thanks.
webcam h.264 video-encoding v4l2 gstreamer
asked Feb 11 '13 at 0:37
mashrurmashrur
613
add a comment |
I am trying to send a H.264 webcam video feed over wifi to another computer using gstreamer. I am using this tutorial as a guide. I am using a Creative Live! Cam Connect HD as my webcam. The website claims that the webcam has on-board H.264 encoder. But when I used v4l2-ctl I get the following:
$ v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
...
Index : 1
Type : Video Capture
Pixel Format: 'MJPG' (compressed)
Name : MJPEG
But when I use the --all flag I get a different pixel format.
v4l2-ctl -d 1 --all
Driver Info (not using libv4l2):
Driver name : uvcvideo
Card type : Live! Cam Connect HD VF0750
Bus info : usb-0000:00:14.0-1
Driver version: 3.5.7
Capabilities : 0x04000001
Video Capture
Streaming
Format Video Capture:
Width/Height : 640/360
Pixel Format : 'YUYV'
Field : None
Bytes per Line: 1280
Size Image : 460800
Colorspace : SRGB
...
I am not sure why I am getting two different pixel formats (MJPG and YUYV) but I was expecting to see Pixel Format: 'H264' (compressed) like in the tutorial I linked to.
I am running Ubuntu 12.1 with kernel version 3.5.0 Does anyone have any idea what my problems it? I would like to use H.264 instead on MJPG to save on bandwidth. Any ideas why it does not detect H.264? Thanks.
webcam h.264 video-encoding v4l2 gstreamer
asked Feb 11 '13 at 0:37
mashrurmashrur
613
I am trying to send a H.264 webcam video feed over wifi to another computer using gstreamer. I am using this tutorial as a guide. I am using a Creative Live! Cam Connect HD as my webcam. The website claims that the webcam has on-board H.264 encoder. But when I used v4l2-ctl I get the following:
$ v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
...
Index : 1
Type : Video Capture
Pixel Format: 'MJPG' (compressed)
Name : MJPEG
But when I use the --all flag I get a different pixel format.
v4l2-ctl -d 1 --all
Driver Info (not using libv4l2):
Driver name : uvcvideo
Card type : Live! Cam Connect HD VF0750
Bus info : usb-0000:00:14.0-1
Driver version: 3.5.7
Capabilities : 0x04000001
Video Capture
Streaming
Format Video Capture:
Width/Height : 640/360
Pixel Format : 'YUYV'
Field : None
Bytes per Line: 1280
Size Image : 460800
Colorspace : SRGB
...
I am not sure why I am getting two different pixel formats (MJPG and YUYV) but I was expecting to see Pixel Format: 'H264' (compressed) like in the tutorial I linked to.
I am running Ubuntu 12.1 with kernel version 3.5.0 Does anyone have any idea what my problems it? I would like to use H.264 instead on MJPG to save on bandwidth. Any ideas why it does not detect H.264? Thanks.
webcam h.264 video-encoding v4l2 gstreamer
webcam h.264 video-encoding v4l2 gstreamer
asked Feb 11 '13 at 0:37
mashrurmashrur
613
asked Feb 11 '13 at 0:37
mashrurmashrur
613
asked Feb 11 '13 at 0:37
mashrurmashrur
613
asked Feb 11 '13 at 0:37
mashrurmashrur
613
asked Feb 11 '13 at 0:37
mashrurmashrur
613
613
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
I think the issue may be that Creative Live! Connect HD cam only supports UVC1.1 which is quite dated; so perhaps the V4l2 driver doesn't recognize it. See Wikipedia's entry for Native h.264 Supported Webcams
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
add a comment |
Two different pixel formats (MJPG and YUYV) show that the camera can support these formats. MPEG for encoded packets(usually used to send across network to receiver end) and YUYV for RAW (uncompressed) image which is usually used for Local Preview.
Howver, your can use H.264 in VIDIOC_S_FMT to get H.264 encoded stream.
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
I think the issue may be that Creative Live! Connect HD cam only supports UVC1.1 which is quite dated; so perhaps the V4l2 driver doesn't recognize it. See Wikipedia's entry for Native h.264 Supported Webcams
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
add a comment |
I think the issue may be that Creative Live! Connect HD cam only supports UVC1.1 which is quite dated; so perhaps the V4l2 driver doesn't recognize it. See Wikipedia's entry for Native h.264 Supported Webcams
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
add a comment |
I think the issue may be that Creative Live! Connect HD cam only supports UVC1.1 which is quite dated; so perhaps the V4l2 driver doesn't recognize it. See Wikipedia's entry for Native h.264 Supported Webcams
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
I think the issue may be that Creative Live! Connect HD cam only supports UVC1.1 which is quite dated; so perhaps the V4l2 driver doesn't recognize it. See Wikipedia's entry for Native h.264 Supported Webcams
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
edited Mar 19 '14 at 16:43
Canadian Luke
18.1k3090148
18.1k3090148
answered Mar 18 '14 at 23:35
ShakManShakMan
1
answered Mar 18 '14 at 23:35
ShakManShakMan
1
answered Mar 18 '14 at 23:35
ShakManShakMan
1
1
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
add a comment |
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
I'm trying both the Creative Live! Cam Connect HD and the Creative Live! Cam Connect HD 1080, and I see the same as mashrur. The message from uvcvideo at connect time says the device is a UVC 1.0 device (not UVC 1.1). This could be causing the difficulty; supposedly H264 was introduced in UVC 1.1.
– Jeffrey Scofield
Jul 2 '14 at 21:17
add a comment |
Two different pixel formats (MJPG and YUYV) show that the camera can support these formats. MPEG for encoded packets(usually used to send across network to receiver end) and YUYV for RAW (uncompressed) image which is usually used for Local Preview.
Howver, your can use H.264 in VIDIOC_S_FMT to get H.264 encoded stream.
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
add a comment |
Two different pixel formats (MJPG and YUYV) show that the camera can support these formats. MPEG for encoded packets(usually used to send across network to receiver end) and YUYV for RAW (uncompressed) image which is usually used for Local Preview.
Howver, your can use H.264 in VIDIOC_S_FMT to get H.264 encoded stream.
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
add a comment |
Two different pixel formats (MJPG and YUYV) show that the camera can support these formats. MPEG for encoded packets(usually used to send across network to receiver end) and YUYV for RAW (uncompressed) image which is usually used for Local Preview.
Howver, your can use H.264 in VIDIOC_S_FMT to get H.264 encoded stream.
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
Two different pixel formats (MJPG and YUYV) show that the camera can support these formats. MPEG for encoded packets(usually used to send across network to receiver end) and YUYV for RAW (uncompressed) image which is usually used for Local Preview.
Howver, your can use H.264 in VIDIOC_S_FMT to get H.264 encoded stream.
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
answered Feb 26 '13 at 8:57
genuine sudogenuine sudo
1
1
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
add a comment |
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
Could you provide a link or info detailing how to do this?
– Silver Quettier
Feb 26 '13 at 9:30
add a comment |
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