[gst-devel] Firewire cameras with DirectShow

[Andoni Morales]

Hi,

We are currently working on a new release of GStreamer-Winbuilds
(0.10.4) wich will comes with support for the following modules:
  *gstreamer-0.10.23
  *gst-plugins-base-0.10.23
  *gst-plugins-good-0.10.15
  *gst-plugins-bad-0.10.13
  *gst-plugins-ugly-0.10.12
  *gst-ffmpeg-0.10.8
  *gnonlin-0.10.11
  *gsy-python-0.10.15
  *gst-gl-0.10
  *farsight2

I tryed to play pond.dv but I get the following erro:  ffmpeg .:0::
Can't determine profile of DV input stream
Instead SMPTEBars.dv, wich is also in the libdv examples plays well.

You can download a preview of the new release here:
http://forja.rediris.es/frs/download.php/1381/GStreamer-WinBuild-0.10.4-preview1.7z

Delete the old c:\gstreamer folder and extract the contents of the 7z
file in c:\ (The old binaries are imcompatibles with the ones of the
next release because the are linked against different CRT's)

Andoni

2009/6/29 Phil Rendell <philrendell at gmail.com>:
> 2009/6/29 Julien Isorce <julien.isorce at gmail.com>
>>
>>> 2009/6/29 Phil Rendell <philrendell at gmail.com>
>>>>
>>>> I also tried setting the lowres property of ffdec_dvvideo to 1/4 size to
>>>> see if that would make a difference, but again, no luck, which leads me to
>>>> believe that it's not a problem with decoding the stream.
>>>
>>> Ok maybe ffdec_dv and ffdemux_dv are poor quality.
>>
>> I have downloaded pond.dv   video sample file from
>> http://libdv.sourceforge.net/
>>
>> Then:
>>
>> with lastest gstreamer git, on linux
>>
>> [fail] gst-launch-0.10 filesrc location=pond.dv ! ffdemux_dv !
>> ffdec_dvvideo ! xvimagesink
>> [fail] gst-launch-0.10 filesrc location=pond.dv ! dvdemux ! ffdec_dvideo !
>> xvimagesink
>> [fail] gst-launch-0.10 filesrc location=pond.dv ! ffdemux_dv ! dvdec !
>> xvimagesink
>> [success] gst-launch-0.10 filesrc location=pond.dv ! dvdemux ! dvdec !
>> xvimagesink
>> [success] ffplay pond.dv
>>
>> So "ffmpeg" can play it but "gst-ffmpeg" cannot.
>
> Thanks for trying that - attempting the upgrade was next on my list.
>
>
>>>> It's just a shame there's not a windows port of libdv, otherwise I could
>>>> try building dvdemux. I don't know if there's anything else I could try?
>>>
>>> You could ask libdv mailing list if someone has already tried to compile
>>> or port libdv on win32.
>>> You could try by your self to compile libdv using msys and mingw. (maybe
>>> it's already ported)
>>>
>>> (http://libdv.sourceforge.net/)
>>
>> It seems that libdv cannot be compiled with mingw:
>> see: http://www.nabble.com/dv-support-on-windows-td20035798.html
>>
>> (note that there is a win32 port for pthread)
>
> I might give this a try. This is probably going to be a massively
> complicated and silly idea, but do you have any idea how complicated it
> would be to create an extension of the dshowvideosrc plugin to include some
> of the other elements in the DirectX pipeline? It's probably too difficult,
> particularly as I'm not a DirectX expert, but I was wondering about doing
> this being as I know that they work well in graphedit.
>
> I'll try to have a look into how difficult it is to port libdv sometime
> tomorrow.
>
> Thanks,
>
> Phil
>
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>



-- 
Andoni Morales Alastruey

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