Am 12.08.2011 um 08:05 schrieb Dan Dennedy: > On Thu, Aug 11, 2011 at 10:20 PM, Marco Gittler <ma...@gitma.de> wrote: >> >> Am 11.08.2011 um 22:54 schrieb Dan Dennedy: >> >>> On Thu, Aug 11, 2011 at 10:33 AM, Marco Gittler <ma...@gitma.de> wrote: >>>> Hi >>>> >>>> i made an mlt plugin, that uses the stabilization from >>>> http://vstab.sourceforge.net/. >>>> First tests are working very good. >>> >>> What a nice contribution! >> :) >>> >>>> There a lots of speed up to be done (cache calculated values in a file, >>>> for later usage). >>> >>> I have not looked at this yet, but can you simply put the calculated >>> values in a string property (colon-delimited list of numbers or json >>> ala rotoscoping). Then, when serializing a mlt composition to xml, it >>> will be saved. Next, when loading a mlt xml, the plugin can use the >>> values from the property instead of calculating them? >> i implemented this now. >> but it looks first it is not working. but i found out, the filter will have >> 2 runs with the video file, started with >> melt ~/Desktop/IMG_0286.MOV -filter videostab -verbose >> >> on the first run it "deshakes" for 38 frames (and saves the values) >> on 2nd run (the visible on) there are 45 (correct length) frames. >> how can the first (false length) run be prevented, else the vector data are >> not correct ? >> >> i had also a first run with 45 frames (a lucky moment) , then it will work >> perfect. > > It sounds like in the first run, it is frame-dropping if you are using > the sdl consumer. Try running with '-consumer sdl real_time=-1'. Hmm.. > if you run the first pass with '-consumer xml:test.mlt' to save the > values then it will not run through all of the frames, so that mode of > operation will not work as I originally thought. I think we need to > change the XML consumer to add an option to iterate through each > frame. This weekend I will download your plugin and figure out what to > do.
some more test with other videos are working. it seems that the problem exists only with video @30fps the first run will then be done with 38 frames (46@30 fps= 38 @25 fps with the same time to run) 25fps videos does not have this "bug". so i don't know if this must be fixed, or if this is a "video profile" thing that must be set for this. melt -profile ntsc_dvd ~/Desktop/IMG_0286.MOV -filter videostab -verbose and melt -profile pal_dvd ~/Desktop/IMG_0286.MOV -filter videostab -verbose the video has every time 38 frame (on the 2 runs) melt ~/Desktop/IMG_0286.MOV -filter videostab -verbose will have first run 38, second 46 frames. (it is a short video from an iPhone) regarde marco > >> regards marco >> >>> >>> -- >>> +-DRD-+ >>> >>> ------------------------------------------------------------------------------ >>> Get a FREE DOWNLOAD! and learn more about uberSVN rich system, >>> user administration capabilities and model configuration. Take >>> the hassle out of deploying and managing Subversion and the >>> tools developers use with it. >>> http://p.sf.net/sfu/wandisco-dev2dev >>> _______________________________________________ >>> Mlt-devel mailing list >>> mlt-de...@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/mlt-devel >> >> > > > > -- > +-DRD-+ > > ------------------------------------------------------------------------------ > Get a FREE DOWNLOAD! and learn more about uberSVN rich system, > user administration capabilities and model configuration. Take > the hassle out of deploying and managing Subversion and the > tools developers use with it. > http://p.sf.net/sfu/wandisco-dev2dev > _______________________________________________ > Mlt-devel mailing list > mlt-de...@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mlt-devel
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