On Monday, March 9, 2015 11:51:17 PM CEST, Dan Dennedy wrote: > You do not need a -repeat. Just move eof=loop ahead of -profile: > http://www.mltframework.org/bin/view/MLT/Questions#How_do_I_loop_something_indefini
I'll give this another shot, I didn't move it ahead of profile. After it, it did not have any effect. > Now the output looks bad, and I mean: linear scaling bad. I wonder, how > > Or do you mean non-interpolated, nearest-neighbor bad? The > default for decklink output is bilinear. Nearest-neighbor bad + not blended with the background, but it looks like that it is only in one direction. Which might be expected with anamorphic scaling. > does MLT currently make wide-screen pal, or scaling at all? At what step > does it downscale to anamorphically 720x576? > > After the reading/decode and before user-specified filters. Ok, that is good to know. > $ melt -query profile=dv_pal_wide | grep sample > sample_aspect_num: 64 > sample_aspect_den: 45 > => force_aspect_ratio=@64/45 I'll give it a shot. > melt eof=loop -profile dv_pal_wide > consumer:/home/tv/kabelkrant.mlt mlt_profile=atsc_1080p_25 > -consumer decklink And for the above, it will do bileair downscaling? > DVI->HDMI->SDI conversion? > > I don't know what you are trying to do here. Ziggo/UPC in The Netherlands forces local broadcasters to use their Divitel SD-MPEG2 encoding platform. The quality at 5.5Mbit is poor enough to prevent noisy input, the inputs are either analogue or SDI. Hence someone someone bought a 155 euro output card, where I typicaly would go for a miniconverter HDMI2SDI. MLT was the first thing that came to mind that actually supports Decklink outputs. Normally I composite on an the Xorg root window and have that transfered to the external encoder. Or use an RaspberryPi for the output job. But now I actually can try MLT as output platform I am interested in using the opportunity to learn something about it. Since the last time I actually ran MLT in production was probably 15 years ago. So a bonus question: if I would like to gracefully swap an .mlt file in melt, is this possible, or should something like melted be used for it? -- Stefan ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
