Brice Vercoustre said :
> Hi Rob,
> 
> Thank you for your help!
> 
> I tried your commend (the one at the bottom of this mail) and I still get the 
> same screen:
> 
> +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
> |1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|
> +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
> +---------------------------------------------------------------------+
> |               H = back 1 minute,  L = forward 1 minute              |
> |                 h = previous frame,  l = next frame                 |
> |           g = start of clip, j = next clip, k = previous clip       |
> |                0 = restart, q = quit, space = play                  |
> +---------------------------------------------------------------------+
> Current Position:          0
> 
> On this screen I have to be behind my computer and press "l" or "space" or 
> whatever makes melt run... And that's the point: how can I launch the command 
> line from a script (.sh or php) SERVER SIDE so that melt can work alone and 
> treat the video. In other words, how can I make it work automatically? 

no you dont - for example

melt videos/theapple.avi -filter greyscale -consumer avformat:testme.mpeg
[mpeg1video @ 0x8857d60]interlacing not supported by codec
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
+---------------------------------------------------------------------+
|               H = back 1 minute,  L = forward 1 minute              |
|                 h = previous frame,  l = next frame                 |
|           g = start of clip, j = next clip, k = previous clip       |
|                0 = restart, q = quit, space = play                  |
+---------------------------------------------------------------------+
Current Position:        824

this will start doing its job without any user interaction.


> At the end, where can I found the testme.avi video to publish it for my 
> students?

where you run the script from.

or like this:
melt videos/theapple.avi -filter greyscale -consumer 
avformat:/home/me/path/to/some/dir/testme.mpeg

> 
> Thank you so much ;-)
> 
> Best Regards,
> Brice Vercoustre
> 
> Le 22 mars 2010 à 14:12, Rob Canning a écrit :
> 
> > Brice Vercoustre said :
> >> Hi all,
> >> 
> >> I'm currently searching for a server side solution that would be able to 
> >> handle picture-in-picture processing (insert a video thumbnail into 
> >> another video). 
> >> 
> >> The purpose of that is to generate educational videos of university 
> >> courses with a mix of both the teacher's screencast (main video) and it's 
> >> face (thumbnail video).
> >> 
> >> I'm looking for a command line app that would let me create such a video. 
> >> The melt app really seems to do that, but I'm not sure I understood the 
> >> mechanism well. With my terminal, I've been able to launch melt to do some 
> >> editing on a video such as:
> >> 
> >>          melt a.dv -filter greyscale in=0 out=50
> >> 
> >> Melt is launched at the 0 frame, I can go from frame to frame... Here is 
> >> the result:
> >> 
> >> +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
> >> |1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|
> >> +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
> >> +---------------------------------------------------------------------+
> >> |               H = back 1 minute,  L = forward 1 minute              |
> >> |                 h = previous frame,  l = next frame                 |
> >> |           g = start of clip, j = next clip, k = previous clip       |
> >> |                0 = restart, q = quit, space = play                  |
> >> +---------------------------------------------------------------------+
> >> Current Position:          0
> >> 
> >> 
> >> But I really do not get how I can export the result into a new video. I 
> >> did not understood the -consumer logic, and how can I exploit it to save 
> >> the result into a new video.
> > 
> > for example this:
> > 
> > melt a.dv -filter greyscale -consumer libdv:testme.dv
> > melt a.dv -filter greyscale -consumer avformat:testme.avi
> > 
> > hth
> > 
> > rob
> > 
> > 
> >> 
> >> If I understand that part well, I'm sure I'll find how to make some 
> >> picture-in-picture processing.
> >> 
> >> Thank you for helping me on this! 
> >> 
> >> Best Regards,
> >> Brice Vercoustre.
> >> 
> >> 
> >> 
> >> 
> >> ------------------------------------------------------------------------------
> >> Download Intel® Parallel Studio Eval
> >> Try the new software tools for yourself. Speed compiling, find bugs
> >> proactively, and fine-tune applications for parallel performance.
> >> See why Intel Parallel Studio got high marks during beta.
> >> http://p.sf.net/sfu/intel-sw-dev
> >> _______________________________________________
> >> Mlt-devel mailing list
> >> [email protected]
> >> https://lists.sourceforge.net/lists/listinfo/mlt-devel
> >> 
> > --------------
> > [email protected]
> > rob.goto10.org
> > --------------
> > 
> 
> 
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> Mlt-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/mlt-devel
> 
--------------
[email protected]
rob.goto10.org
--------------

------------------------------------------------------------------------------
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Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
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http://p.sf.net/sfu/intel-sw-dev
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