Login | Register For Free | Help
Search for: (Advanced)

Mailing List Archive: ivtv: users

High res 1600x1200 still image capture

  

 
ivtv users RSS feed   Index | Next | Previous | View Threaded


matthew.carless at fugro-robertson

Oct 21, 2005, 10:26 AM

Post #1 of 18 (1336 views)
Permalink
High res 1600x1200 still image capture
I have a PVR350 and would like to know if it is possible to capture
still images at a resolution of 1600x1200. The hardware specification of
the card suggests that it is possible. It also lists various formats
that the image is captured in. I'm not sure wither the specification is
referring to the windows software to generate the still images in these
various formats.

I have managed to capture a still frame at a resolution of 720x480. This
was capturing raw data from the /dev/video34 device and running it
through a process to get it into jpg format.

I have had no success when trying a higher res.

Does anybody have any ideas on how to do this

Thanks


rwillman at gmail

Oct 21, 2005, 3:54 PM

Post #2 of 18 (1327 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


rwillman at gmail

Oct 21, 2005, 4:09 PM

Post #3 of 18 (1325 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


rwillman at gmail

Oct 21, 2005, 4:28 PM

Post #4 of 18 (1321 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


matthew.carless at fugro-robertson

Oct 21, 2005, 4:45 PM

Post #5 of 18 (1324 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Thanks for your answer,

I'm still a bit confused because the specification of the hardware
states that it can capture still images @ 1600x1200.

Is this just cards specification being hyped up by the manufactures and
the actual resizing work is done in the windows software, a bit like
what happens with budget scanners?


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


matthew.carless at fugro-robertson

Oct 21, 2005, 5:28 PM

Post #6 of 18 (1323 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Thanks for your answer,

I'm still a bit confused because the specification of the hardware
states that it can capture still images @ 1600x1200.

Is this just cards specification being hyped up by the manufactures and
the actual resizing work is done in the windows software, a bit like
what happens with budget scanners?


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


rwillman at gmail

Oct 21, 2005, 5:44 PM

Post #7 of 18 (1322 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


matthew.carless at fugro-robertson

Oct 21, 2005, 5:58 PM

Post #8 of 18 (1321 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Thanks for your answer,

I'm still a bit confused because the specification of the hardware
states that it can capture still images @ 1600x1200.

Is this just cards specification being hyped up by the manufactures and
the actual resizing work is done in the windows software, a bit like
what happens with budget scanners?


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


matthew.carless at fugro-robertson

Oct 21, 2005, 6:26 PM

Post #9 of 18 (1322 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Just checked the camera spec and it only has a res of 768 (H) x 494 (V)
anyway.
Will have to go down a different route to capture a high res image.

Thanks for your help

On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


matthew.carless at fugro-robertson

Oct 21, 2005, 6:30 PM

Post #10 of 18 (1320 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Forgot to mention that I'm not capturing a TV signal I'm capturing a
signal via the S-video in on the card via a Sony FCB-IX47AP camera.


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


rwillman at gmail

Oct 21, 2005, 6:35 PM

Post #11 of 18 (1318 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


matthew.carless at fugro-robertson

Oct 21, 2005, 7:23 PM

Post #12 of 18 (1318 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Thanks for your answer,

I'm still a bit confused because the specification of the hardware
states that it can capture still images @ 1600x1200.

Is this just cards specification being hyped up by the manufactures and
the actual resizing work is done in the windows software, a bit like
what happens with budget scanners?


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


matthew.carless at fugro-robertson

Oct 21, 2005, 7:24 PM

Post #13 of 18 (1318 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Forgot to mention that I'm not capturing a TV signal I'm capturing a
signal via the S-video in on the card via a Sony FCB-IX47AP camera.


On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


matthew.carless at fugro-robertson

Oct 21, 2005, 7:26 PM

Post #14 of 18 (1316 views)
Permalink
High res 1600x1200 still image capture [In reply to]
Just checked the camera spec and it only has a res of 768 (H) x 494 (V)
anyway.
Will have to go down a different route to capture a high res image.

Thanks for your help

On Fri, 2005-10-21 at 23:51 +1000, Ross wrote:
> On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> > I have a PVR350 and would like to know if it is possible to capture
> > still images at a resolution of 1600x1200.
>
> > I have managed to capture a still frame at a resolution of 720x480. This
> > was capturing raw data from the /dev/video34 device and running it
> > through a process to get it into jpg format.
>
> You won't get any better than this. The format of the incoming signal
> is either 720x480 (for NTSC) or 720x576 (for PAL).
>
> If you want to do better, you need a (HD) digital card.
>
> Cheers,
>
> Ross
--
Matthew Carless <mnc [at] robresint>
Fugro Robertson Ltd


rwillman at gmail

Oct 21, 2005, 8:28 PM

Post #15 of 18 (1325 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


rwillman at gmail

Oct 21, 2005, 11:17 PM

Post #16 of 18 (1318 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


rwillman at gmail

Oct 22, 2005, 12:18 AM

Post #17 of 18 (1318 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/21/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> I have a PVR350 and would like to know if it is possible to capture
> still images at a resolution of 1600x1200.

> I have managed to capture a still frame at a resolution of 720x480. This
> was capturing raw data from the /dev/video34 device and running it
> through a process to get it into jpg format.

You won't get any better than this. The format of the incoming signal
is either 720x480 (for NTSC) or 720x576 (for PAL).

If you want to do better, you need a (HD) digital card.

Cheers,

Ross


rwillman at gmail

Oct 22, 2005, 5:38 AM

Post #18 of 18 (1323 views)
Permalink
High res 1600x1200 still image capture [In reply to]
On 10/22/05, Matthew Carless <matthew.carless [at] fugro-robertson> wrote:
> Thanks for your answer,
>
> I'm still a bit confused because the specification of the hardware
> states that it can capture still images @ 1600x1200.

Are you using a digital or analogue camera? I would expect that it
will capture a digital still image capture, which you'd have to
transfer digitally. You'd really need to look at the documentation
that came with your camera.

Have a look at http://en.wikipedia.org/wiki/PAL and
http://en.wikipedia.org/wiki/NTSC for more information on the format
descriptions, you're limited by the card to the standard PAL/NTSC
format.

> Is this just cards specification being hyped up by the manufactures and
> the actual resizing work is done in the windows software, a bit like
> what happens with budget scanners?

I belive most manufacturers call real zoom "optical zoom", and
software zoom "digital zoom". This doesn't usually affect the size of
the capture, it'll still be the same size (and reslution), just with
one area zoomed in on.

Cheers,

Ross

ivtv users RSS feed   Index | Next | Previous | View Threaded
 
 


Interested in having your list archived? Contact Gossamer Threads
 
  Web Applications & Managed Hosting Powered by Gossamer Threads Inc.