Re: [Gphoto-user] streaming viewfinder content

[Simon T. <sim...@gm...>]

Unfortunately I'm not aware of any other compact cameras that support
streaming (though I haven't actively looked!). Canon DSLRs have good
streaming viewfinder support in gphoto if you have deep pockets!

There are probably dozens of other solutions but it depends on the
exact nature of your application. Someone intending to create a fixed,
mains powered high resolution security camera would have very
different needs to someone wanting a compact portable
remotely-triggered wildlife camera.

Simon

On 25 May 2010 12:55, Mag. Gerolf Scherr <ger...@ce...> wrote:
> Hi,
>
> I am not fixed on canon. I've already described my application
> parameters below. What else information do you need for a
> recommendation? Is there any other brand/model known to have usable
> streaming?
>
> gerolf.
>
> Simon Taylor schrieb:
>> Hi Gerolf,
>>
>> As I understand it this streaming of the viewfinder image is
>> technically possible, but nobody has yet been able to implement it for
>> the Canon compacts. It's used by many Windows remote capture programs
>> such as PSRemote, but they had a nice DLL from Canon to use :) Canon
>> don't tend to support remote capture on their newer compacts (see
>> 'supported cameras' under
>> http://www.breezesys.com/PSRemote/features.htm - generally a good
>> indication of which cameras support remote capture) so depending on
>> your real application it may be worth considering other options,
>> though it's difficult to recommend without knowing exactly what your
>> requirements are.
>>
>> For newer (DIGIC II or later) cameras, the CHDK project may be worth
>> looking at as it enables some remote control functionality (USB
>> voltage trigger, motion detection etc)
>>
>> Regards,
>>
>> Simon
>>
>> On 21 May 2010 17:18, Mag. Gerolf Scherr <ger...@ce...> wrote:
>>> I've ordered a new spare battery for the canon, the old one lifes only
>>> for a few seconds.
>>> When it arrives, I will give it a try with the PTP mode.
>>> The old ixus was only meant for experiments, for the real application I
>>> will buy another one.
>>>
>>> - which camera would support my requirements? (viewfinder/streaming )
>>>
>>> gerolf.
>>>
>>> Marcus Meissner schrieb:
>>>> On Tue, May 18, 2010 at 10:10:36PM +0200, Gerolf Scherr wrote:
>>>>> Hi everybody!
>>>>>
>>>>> [...]
>>>>> So my question is:
>>>>> - are there known camera models which support 'streaming' of the viewfinder contents via USB?
>>>>> - are there other ways how I can accomplish this task?
>>>>>
>>>>> - As a workaround I was thinking about mounting a webcam next to my camera, streaming the webcam video (=using it as preview / viewfinder) and using the 'real' camera just for the 'real' photos. but weight is a limiting factor in my application and the support for zooming would be limited (no wysiwyg)
>>>> The Canon driver seems not to support "viewfinder" data download yet.
>>>>
>>>> The PTP2 driver does it for the cameras that itself support it.
>>>>
>>>> So you could try using the IXUS v3 in PTP mode and see if --capture-preview gives a smaller picture?
>>>>
>>>> "Streaming" would be just a repeating loop of reading this preview image.
>
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