Re: [Mlt-devel] Example of DeckLink Capture with mlt xml for melted

[Dan D. <da...@de...>]

On Thu, Sep 22, 2011 at 10:31 AM, Raymond Doran
<ra...@th...> wrote:
> LOL, I am using "dv_pal" for my profile.  I do not get any errors with verbose it runs just fine. The only error i get is when I output to xml I get a "segmentation fault"  but the xml is still created.
>

Normally, the XML consumer serializes the object tree just after
construction but without actually doing any processing.  So, I think
the crash is a simple matter of something in the decklink producer not
expecting a consumer to not request any frames. As long as you have
well-formed XML, this crash should not necessarily affect anything.

> Every thing works good with melt, even before I sent the first request.

OK, I will have to test this entire use case and report back any
findings. I will do that this weekend.

> Regards,
> Raymond Doran
>
> On Sep 22, 2011, at 10:58 AM, Dan Dennedy wrote:
>
>> On Thu, Sep 22, 2011 at 7:49 AM, Raymond Doran
>> <ra...@th...> wrote:
>>> Dan,
>>>
>>> Also I added a watermark to the producer in the xml that was output to see if it was maybe an invalid format or something.   The water shows just like it should just over a white (blueish white) screen.  USTA shows that it is playing and the frames are advancing just like they should.
>>>
>>
>>
>> What profile are you using? I hope not foo. Run 'melt -query profiles'
>> to get a list if you are not sure what to use. Only broadcast-oriented
>> ones work (begins with atsc_ or dv_).
>>
>> Then, does 'melt -verbose -profile foo decklink:' work? You should get
>> that working before trying to get it working in melted. The -verbose
>> option will show warnings and errors if detects anything.
>>
>>> Regards,
>>> Raymond Doran
>>>
>>> On Sep 22, 2011, at 9:22 AM, Raymond Doran wrote:
>>>
>>>> Thanks for you help Dan, unfortunately I have two issues with it.
>>>>
>>>> 1.  When I run the command it does produce XML but I get a "segmentation fault" when it runs.  That is probably more just a bug then causing me issues.
>>>>
>>>> 2.  When I load it into melted it does the same thing as before, just white ( blueish white ) screen.  Like it may recognize a device but not pulling any frames.
>>>>
>>>> I tried constraining it to 7000 & 20000 frames but still does the same thing.
>>>>
>>>> Regards,
>>>> Raymond Doran
>>>>
>>>> On Sep 21, 2011, at 2:20 PM, Dan Dennedy wrote:
>>>>
>>>>> On Wed, Sep 21, 2011 at 11:18 AM,  <dan...@th...> wrote:
>>>>>> I can get melt to play the capture and play a list of files but I am
>>>>>> cannot figure out how to get melted to play capture.  I would like to do
>>>>>> this with the mlt xml.  I am not sure about what list I am should be
>>>>>> posting this to but this is what I found.
>>>>>
>>>>> Basically,
>>>>>
>>>>> $ melt -profile foo decklink: -consumer xml:decklink.mlt
>>>>>
>>>>> Then, load decklink.mlt into melted, but you might need to constrain
>>>>> the length of that capture by putting an out="<#frames>" after the
>>>>> "decklink:" above. Of course, there might be other gotchas I did not
>>>>> think about.
>>>>>
>>>>> --
>>>>> +-DRD-+
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>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>>
>> --
>> +-DRD-+
>>
>>
>
>



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