[Paraview] MJPEG instead of MPEG4 (issue 8925)

Mike Jackson mike.jackson at bluequartz.net
Sat Jul 11 09:00:48 EDT 2009


The only reason I was selecting Quicktime on OS X was that it is
obviously built in and there are no licensing restrictions on any of
the codecs that it supports.
  On Windows there is already the wmv plugin which uses native windows APIs.

 On linux I wouldn't really know what to use. Due to licensing issues
I don't think you can directly include source in ParaView/VTK that is
GPL'ed in any way (which GStreamer and FFMPEG are). And the issue with
FFMPEG is that is uses patented algorithms for its codecs in which
royalties have not been paid. See the beginning of this entire thread.

Mike

On Sat, Jul 11, 2009 at 4:18 AM, Michael Wild<themiwi at gmail.com> wrote:
> How about using GStreamer as an abstraction layer? It can use native
> backends, such as QuickTime and DirectShow.
>
> Michael
>
> On 11. Jul, 2009, at 9:42, Dominik Szczerba wrote:
>
>> On Fri, 2009-07-10 at 20:39 -0400, Mike Jackson wrote:
>>>
>>> Something that has been on my "todo" list for a long time is to use
>>> Quicktime as a back end on at least OS X to create movies. I have just
>>> never had the time to start down that path. This could also be used on
>>> Windows if needed, but using the native windows media is probably
>>> better. At least that way those on OS X can have their choice of legal
>>> codecs to use. Just not sure what to do on the Linux side of things.
>>>
>>
>> ffmpeg please.
>>
>> -- Dominik
>>
>>> Mike
>>>
>>> On Fri, Jul 10, 2009 at 12:12 PM, Michael Wild<themiwi at gmail.com> wrote:
>>>>
>>>> Will do as soon as I have a patch ready...
>>>>
>>>> Michael
>>>>
>>>> On 10. Jul, 2009, at 17:25, Berk Geveci wrote:
>>>>
>>>>> I agree that it would be nice to add ogg/theora. I am guessing ffmpeg
>>>>> supports it. Would you mind adding a feature request in
>>>>> http://paraview.org/Bug.
>>>>>
>>>>> Thanks,
>>>>> -berk
>>>>>
>>>>> On Thu, Jul 9, 2009 at 3:05 PM, Michael Wild<themiwi at gmail.com> wrote:
>>>>>>
>>>>>> Thanks Berk and David for the prompt answer.
>>>>>>
>>>>>> Licensing certainly is a good reason. But then, mjpeg produces much
>>>>>> larger
>>>>>> movies. Every frame is a key-frame. How about offering a choice
>>>>>> between
>>>>>> mjpeg and ogg/theora in the export dialog?
>>>>>>
>>>>>> Michael
>>>>>>
>>>>>> On 9. Jul, 2009, at 20:15, David E DeMarle wrote:
>>>>>>
>>>>>>> We had two reasons, licensing, and cross platform playability
>>>>>>> see:
>>>>>>> http://markmail.org/message/2dhkwsnhou3x4bjw
>>>>>>
>>>>>> Dang, I searched the archives, but nothing useful showed up... must
>>>>>> have
>>>>>> used the wrong keywords!
>>>>>>
>>>>>>>
>>>>>>> David E DeMarle
>>>>>>> Kitware, Inc.
>>>>>>> R&D Engineer
>>>>>>> 28 Corporate Drive
>>>>>>> Clifton Park, NY 12065-8662
>>>>>>> Phone: 518-371-3971 x109
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Jul 9, 2009 at 11:32 AM, Michael Wild<themiwi at gmail.com>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> Hi all
>>>>>>>>
>>>>>>>> is there a specific reason why the movie encoding was changed from
>>>>>>>> MPEG4
>>>>>>>> to
>>>>>>>> MJPEG?
>>>>>>>>
>>>>>>>> See: http://www.vtk.org/Bug/view.php?id=8925
>>>>>>>>
>>>>>>


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