25.01.12 19:55, Dan Dennedy написав(ла):
> On Wed, Jan 25, 2012 at 9:43 AM, Dan Dennedy<d...@dennedy.org> wrote:
>> 2012/1/25 Maksym Veremeyenko<ve...@m1stereo.tv>:
>>> 25.01.12 19:24, Dan Dennedy написав(ла):
>>>
>>>> On Wed, Jan 25, 2012 at 8:16 AM, Maksym Veremeyenko<ve...@m1stereo.tv>
>>>> wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> are there any way to set (or use) *loop* or *eof* properties for
>>>>> *avformat* producer?
>>>>
>>>>
>>>> Yes, I think it should, but it depends on your context (object model)
>>>> and application to enable the proper behavior. IOW, the playlist or
>>>> multitrack length might be limiting the duration. Also, it appears
>>>> that the playlist sets eof=pause when you add the producer to a
>>>> playlist. So, eof needs to be set after the playlist operation. Also,
>>>> the playlist producer supports an eof property itself that can be a
>>>> factor.
>>>>
>>>
>>> it seems i have to use playlist for playing loop...
>>>
>>> command
>>>
>>> melt test.dv eof=loop
>>>
>>> do not work properly for me, is it correct?
>>
>> Correct, that is what I implied by "context." melt does is not
>> concerned to easily support this use case (but there might be a tricky
>> way to do it). Melt always creates a multitrack with a playlist for a
>> track. The most obvious way to simulate a loop with melt is to use
>> -repeat with a large value. You will need to dig a little if you need
>> a real loop by using a mlt xml file or by tricking the command line
>> options.
>
> I had a vague recollection that I had figured out a command line
> trick. So, I searched my e-mail and found it:
>
> melt eof=loop test.dv
>
> In the options processor, initially the current properties object is
> the tractor, which is a producer that understands eof property
> semantics. So, here we set a property on the tractor producer before
> creating a new producer, which changes the current properties object.
>
i had a success with C code to provide a loop throw a mlt_playlist, but
for xml i can't provide this. i did a simple demo with background video
and some small animation on it:
<?xml version="1.0" ?>
<mlt>
<!-- clip -->
<producer id="clip">
<property name="resource">I0009618_test.avi</property>
</producer>
<!-- cg -->
<producer id="cg">
<property name="resource">globe_SD.avi</property>
</producer>
<!-- cg loop -->
<playlist id="cg_loop" eof="loop">
<entry producer="cg"/>
</playlist>
<tractor>
<multitrack>
<track producer="cg_loop"/>
<track producer="clip"/>
</multitrack>
<!-- clip and cg blending -->
<transition in="0.0" out="1499.0">
<property name="mlt_service">composite</property>
<property name="a_track">1</property>
<property name="b_track">0</property>
<property name="progressive">1</property>
<property name="start">0/0:100%x100%:100</property>
<property name="end">0/0:100%x100%:100</property>
<property name="halign">left</property>
<property name="valign">top</property>
<property name="distort">0</property>
</transition>
</tractor>
</mlt>
--
________________________________________
Maksym Veremeyenko
Senior System Administrator
IT Department
Ukrainian Music Television Channel "M1"
DDI. +380 44 205-44-92
Tel. +380 44 205-44-80
Fax. +380 44 205-44-82
Cell. +380-67-447-22-43
E-mail : maksym.veremeye...@m1stereo.tv
Web site: www.m1stereo.tv
------------------------------------------------------------------------------
Keep Your Developer Skills Current with LearnDevNow!
The most comprehensive online learning library for Microsoft developers
is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
Metro Style Apps, more. Free future releases when you subscribe now!
http://p.sf.net/sfu/learndevnow-d2d
_______________________________________________
Mlt-devel mailing list
Mlt-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/mlt-devel
