On Sun, Jan 20, 2013 at 8:32 PM, Dan Dennedy <d...@dennedy.org> wrote: > On Sun, Jan 20, 2013 at 7:54 PM, Steven Boswell II <ulat...@yahoo.com> wrote: >> Hello! I followed the instructions at >> http://kdenlive.org/contribution-manual/how-submit-patch -- I submitted a >> bug report, which can be found at >> http://www.kdenlive.org/mantis/view.php?id=2953 , and now I'm mailing the >> kdenlive-devel list. >> >> My patch allows rendering to raw YUV. I wanted this feature because I want >> to clean up my video clip (e.g. brightness, contrast) in kdenlive, then >> export it to raw YUV for processing in mjpegtools (where I'm one of the >> developers), then bring it back into kdenlive for editing/FX/etc. >> >> The problem is that the exported raw-video is marked as progressive, even >> though the parameters passed to MLT say that the video is not progressive! >> (My input video is miniDV, which is bottom-field-first interlaced.) I know >> how to fix this in mjpegtools, but I'm looking to fix the original problem. >> This may be an MLT bug, in which case I'll keep digging there. But in >> kdenlive, the "top" property in ProducerAvFormat (see >> http://www.mltframework.org/bin/view/MLT/ProducerAvformat for more info) >> doesn't appear to ever be set! > > A producer is for the input. The avformat consumer is for output. The > avformat producer's top property does not need to be set with a DV > input unless you are trying to override the detected field order. > > The avrformat consumer sets ILME and ILDCT on the AVCodecContext flags > when the mlt profile/consumer is set for non-progressive output. It is > not clear to me if that information is passed to the libavformat > yuv4mpegpipe. There might >
It also sets the interlaced and top_field_first fields of the AVFrame, except in the case of rawvideo! Rawvideo output has some special handling. I just committed a fix for it and verified the header field of yuv4mpeg output: melt ~/Videos/PAL.dv -consumer avformat:test.y4m head test.y4m YUV4MPEG2 W720 H576 F25:1 Ib A16:15 C420jpeg XYSCSS=420JPEG P.S. please be aware that if you change the vertical resolution of an interlaced clip in any way, it is automatically deinterlaced because there is no field-aware scaler. -- +-DRD-+ ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122412 _______________________________________________ Kdenlive-devel mailing list Kdenlive-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
