Am 12.07.2009 um 22:39 schrieb Dan Dennedy: > 2009/7/11 Marco Gittler <g.marco at freenet.de>: >> >> Am 10.07.2009 um 23:53 schrieb Dan Dennedy: >> >>> 2009/7/10 Marco Gittler <g.marco at freenet.de>: >>>> >>>> @dan th title should be created with alpha channel. >>>> how can i test in melt to overlay this title over a video ? >>> >>> Please make sure that your new producer only produces >>> mlt_image_rgb24a >>> and indicates it. Do not worry about conversion to mlt_image_yuv422 >>> anymore. >>> >>>> melt kdenlivetitle:try.kdenlivetitle -track video.avi -attach >>>> transition:mix >>>> -> does not work :( >>> >>> add "*.kdenlivetitle=kdenlivetitle" to core/loader.dict >>> >>> melt video.avi -filter watermark:try.kdenlivetitle >>> composite.progressive=1 >> >> nice, this works for pixbuf pictures. but with the >> kdenlivetitle :no overlay >> as standalone prodcuer the titleplayer works very well. >> >> does mlt_image_rgb24a, also include (like the name seems to say) >> the alpha >> channel ? > > Yes. > >> it seems the alpha will not be set. > > If you return mlt_image_rgb24a and do not include the alpha channel > byte per pixel, then the image will skewed because downstream > functions expect 4 bytes per pixel. Producer qimage supports this, but > it must convert ARGB to RGBA. Maybe something in the way you render is > writing alpha channel byte as 0xff. the image created i now rgb24a and includes real alpha data. playing the kdenlivetitle alone plays correct. but as overlay (watermark) with other producers will not show anything.
tested with producer_qimage (works in both cases). any idea what can go wrong ? (the producer_get_image is not large, but i can't see any error ) any hints someone ? regards marco > >> or must i copy the alpha channel to an extra buffer and set this >> then to >> "alpha" as property ? > > This is possible, but it only makes sense if the alpha channel is a > separate picture, which is not typical for Qt. > > -- > +-DRD-+ > > ------------------------------------------------------------------------------ > Enter the BlackBerry Developer Challenge > This is your chance to win up to $100,000 in prizes! For a limited > time, > vendors submitting new applications to BlackBerry App World(TM) will > have > the opportunity to enter the BlackBerry Developer Challenge. See > full prize > details at: http://p.sf.net/sfu/Challenge > _______________________________________________ > Kdenlive-devel mailing list > Kdenlive-devel at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/kdenlive-devel -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 3914 bytes Desc: not available URL: <http://mail.kde.org/pipermail/kdenlive/attachments/20090714/4f2ce106/attachment.p7s>
