Re: [Mlt-devel] How can I save a melt server side edited video into a new file?
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Re: [Mlt-devel] How can I save a melt server side edited video into a new file?
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From: Brice V. <br...@ve...> - 2010-03-22 15:41:32
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Ok the problem is that melt launch correctly, but the "Current Postiion" stays at 0, and any testme.avi never comes. melt /home/test/video.dv -filter greyscale -consumer avformat:testme.mpeg +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ |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 (And then nothing happen until I enter "q" for example) (no testme.mpeg in /home/test/ directory) Do you think I can have a problem with my MLT install on my Ubuntu server? Best Regards, Brice Vercoustre Le 22 mars 2010 à 16:01, Rob Canning a écrit : > 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 >>>> Mlt...@li... >>>> https://lists.sourceforge.net/lists/listinfo/mlt-devel >>>> >>> -------------- >>> ro...@go... >>> 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 >> Mlt...@li... >> https://lists.sourceforge.net/lists/listinfo/mlt-devel >> > -------------- > ro...@go... > rob.goto10.org > -------------- > |