Thanks, Dan for your input. Working well. However, it would be nice if there is any pointer on a compositing like --filter-complex in ffmpeg, say:
$ ffmpeg -f x11grab -video_size 1680x1050 -framerate 30 -i :0.0 \ -f v4l2 -video_size 320x240 -framerate 30 -i /dev/video0 \ -f alsa -ac 2 -i hw:0,0 -i logo.png -filter_complex \ "[0:v]scale=1024:-1,setpts=PTS-STARTPTS[bg]; \ [1:v]scale=120:-1,setpts=PTS-STARTPTS[fg]; \ [bg][fg]overlay=W-w-10:10[bg2]; \ [bg2][3:v]overlay=W-w-10:H-h-10,format=yuv420p[out]" \ -map "[out]" -map 2:a -vcodec libx264 -preset veryfast \ -maxrate 3000k -bufsize 4000k -acodec libmp3lame -ar 44100 -b:a 128k \ -f flv rtmp://live.justin.tv/app/<stream key> in mltframework regime? Thanks again and have a nice weekend /z On 10/14/15, Dan Dennedy <d...@dennedy.org> wrote: > Melt is numeric locale sensitive, and keyframed values should be quoted. > > On Tue, Oct 13, 2015, 11:45 PM Zenny <garbytr...@gmail.com> wrote: > >> Thanks again Janne. >> >> I lumakeyed in KDEnlive and worked well with: >> <filter id="lumakey"> >> <property name="track">0</property> >> <property name="threshold">130</property> >> <property name="slope">0</property> >> <property name="prelevel">255</property> >> <property name="postlevel">0</property> >> <property name="mlt_type">filter</property> >> <property name="mlt_service">lumakey</property> >> <property name="kdenlive_id">lumakey</property> >> <property name="tag">lumakey</property> >> <property name="kdenlive_ix">1</property> >> <property name="kdenlive_info"/> >> </filter> >> <filter id="frei0r.alpha0ps"> >> <property name="track">0</property> >> <property name="version">0.3</property> >> <property name="mlt_type">filter</property> >> <property name="mlt_service">frei0r.alpha0ps</property> >> <property name="kdenlive_id">frei0r.alpha0ps</property> >> <property name="tag">frei0r.alpha0ps</property> >> <property name="kdenlive_ix">3</property> >> <property name="Display">0.0</property> >> <property name="Display input alpha">0</property> >> <property name="Operation">1.0</property> >> <property name="Threshold">0=0.5</property> >> <property name="Shrink/Grow/Blur amount">0=0.5</property> >> <property name="Invert">0</property> >> <property name="kdenlive_info"/> >> </filter> >> >> It produces nice feather blur around the talent. However, when I tried >> to translate to command line with: >> >> $melt BACKGROUND -track FOREGROUND \ >> -filter lumakey threshold=130 slope=0 prelevel=255 postlevel=0 \ >> -filter frei0r.scale0alpha0ps Display=0 "Display input alpha"=0 >> Operation=1.0 Threshold=0=0.5 "Shrink/Glow/Blur amount"=0=0.5 Invert=0 >> \ >> -transition composite >> >> It lumakeyed, but the feather blur didn't work. How to interpret the >> nitty gritty details that KDEnlive provides into melt commandline? >> >> Appreciate for some guidance. >> >> On 10/14/15, Zenny <garbytr...@gmail.com> wrote: >> > BTW, Janne, Flowblade 1.2 deb gets installed, but segfaults in ubuntu >> > 14.04, fyi. >> > >> > In kdenlive, I found the lumakey under misc which I didn't actually >> > expect. Thanks for the pointer. Shotcut GUI neither shows up chorma >> > nor luma nor color key in it's filter list, as you must be aware of. I >> > am on 15.04 version of Shotcut,fyi. >> > >> > wbr, >> > /z >> > >> > On 10/13/15, Zenny <garbytr...@gmail.com> wrote: >> >> Thanks Janne, but I could not figure out chroma/luma key filter in >> >> Shotcut, not one in Flowblade or KDEnlive. Any pointer. >> >> >> >> On 10/13/15, Janne Liljeblad <janne.liljeb...@gmail.com> wrote: >> >>> After 10s of moving sliders in Flowblade i got values threashold:80, >> >>> slope:0, prelevel:255, postlevel:0 that seemed to work ok. You >> >>> probably should test stuff like this with KDEnlive, Flowblade or >> >>> Shotcut before posting here, this isn't too hard to try. >> >>> >> >>> >> >>> Janne >> >>> >> >>> On Tue, Oct 13, 2015 at 9:24 PM, Zenny <garbytr...@gmail.com> wrote: >> >>>> Hi, >> >>>> >> >>>> I am trying to extract the talent from the background which is lit >> >>>> the >> >>>> most using lumakey (See http://picpaste.com/G8XWYhuz.jpg). >> >>>> >> >>>> Using mltframework v0.9.8, >> >>>> >> >>>> $ melt BACKGROUND_VIDEO \ >> >>>> -track FOREGROUND_VIDEO \ >> >>>> -filter lumakey \ >> >>>> -transition composite >> >>>> >> >>>> extracts the talent and leaves the background. >> >>>> >> >>>> $ melt -query filter=lumakey >> >>>> >> >>>> gives four variables to choose from: threshold (0-255), slope >> >>>> (0-128), >> >>>> prelevel (0-255) and postlevel (0-255) which has gone above my head. >> >>>> >> >>>> Is there a way that I can extract the talent from the background >> >>>> using >> >>>> lumakey filter? Help appreciated. >> >>>> >> >>>> wbr, >> >>>> /z >> >>>> >> >>>> >> ------------------------------------------------------------------------------ >> >>>> _______________________________________________ >> >>>> Mlt-devel mailing list >> >>>> Mlt-devel@lists.sourceforge.net >> >>>> https://lists.sourceforge.net/lists/listinfo/mlt-devel >> >>> >> >> >> > >> >> >> ------------------------------------------------------------------------------ >> _______________________________________________ >> Mlt-devel mailing list >> Mlt-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mlt-devel >> > ------------------------------------------------------------------------------ _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
