On 6/28/15, Dave Rice <d...@dericed.com> wrote: > >> On Jun 28, 2015, at 11:07 AM, Paul B Mahol <one...@gmail.com> wrote: >> >> On 6/28/15, Dave Rice <d...@dericed.com> wrote: >>> Hi, >>> >>>> On Jun 27, 2015, at 4:52 PM, Paul B Mahol <one...@gmail.com> wrote: >>>> >>>> Signed-off-by: Paul B Mahol <one...@gmail.com> >>>> --- >>>> doc/filters.texi | 76 ++++++++++++ >>>> libavfilter/Makefile | 1 + >>>> libavfilter/allfilters.c | 1 + >>>> libavfilter/vf_drawgraph.c | 297 >>>> +++++++++++++++++++++++++++++++++++++++++++++ >>>> 4 files changed, 375 insertions(+) >>>> create mode 100644 libavfilter/vf_drawgraph.c >>>> >> >> [...] >> >>> >>> With this version using a color name for foreground no longer works: >>> >>> This works: >>> ffplay -f lavfi -i mandelbrot -vf >>> signalstats,drawgraph=metadata=lavfi.signalstats.YAVG:min=0:max=255:slide=scroll:bg=green:fg=0x0000FF >>> >>> This doesn't: >>> ffplay -f lavfi -i mandelbrot -vf >>> signalstats,drawgraph=metadata=lavfi.signalstats.YAVG:min=0:max=255:slide=scroll:bg=green:fg=red >> >> AFAIK The expressions can not work with strings. >> >>> >>> Also here's an example with blend: >>> ffplay -f lavfi -i mandelbrot -vf "signalstats,split=3[a][b][c];\ >>> [a]drawgraph=metadata=lavfi.signalstats.YAVG:min=0:max=255:slide=scroll:fg=0xFFFF0000:mode=dot[a1];\ >>> [b]drawgraph=metadata=lavfi.signalstats.UAVG:min=0:max=255:slide=scroll:fg=0xFF00FF00:mode=dot[b1];\ >>> [c]drawgraph=metadata=lavfi.signalstats.VAVG:min=0:max=255:slide=scroll:fg=0xFFFFFF00:mode=dot[c1];\ >>> [a1][b1]blend=and[ab];[ab][c1]blend=and[out]" >>> >> >> The blending kills difference in colors so I may add multiple graphs >> support for filter. > > Setting the background to black and blending seems a little better, though > I'm losing one of my graphs in this example. > > ./ffplay -f lavfi -i mandelbrot -vf "signalstats,split=3[a][b][c];\ > [a]drawgraph=lavfi.signalstats.YAVG:min=0:max=255:slide=scroll:bg=black:fg=0x0000FF:mode=dot[a1];\ > [b]drawgraph=lavfi.signalstats.YLOW:min=0:max=255:slide=scroll:bg=black:fg=0x00FF00:mode=dot[b1];\ > [c]drawgraph=lavfi.signalstats.YHIGH:min=0:max=255:slide=scroll:bg=black:fg=0xFF0000:mode=dot[c1];\ > [a1][b1]blend=lighten,[c1]blend=lighten[out]" > > Also the foreground expression is in ABGR or BGR. This is the opposite > arrangement of what is specified here > http://ffmpeg.org/ffmpeg-utils.html#Color.
Using blend for this is SLOW. Have you tried new 'line' mode? Also expressions allow changing color of dot/line/bar so try it and tell me if its fine. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
