Hi there! Sorry for abusing this group a little bit, but I have no idea where to ask this and maybe there are some people here who ran in the same problem already:
I want to use FFmpeg to convert JPEG image sequences to Quicktime movies. All working fine so far. Now I also wanted to add text burnins and overlaying of the company logo. Text is also working fine, but the logo gets me strange results: I'm using the '-vf "movie=watermarklogo.png [watermark]; [in][watermark] overlay=10:10 [out]"' method. Problem is: as soon as I add this logo to my ffmpeg rendering, the color of my underlying video changes. It gets kind of brighter, or a gamma shift or so. I tried a premultiplied PNG, an unpremultiplied, same wrong result for the background. Does anyone know if it is possible to overlay a logo over a background in FFmpeg without changing the background, like a normal 'over' in Nuke? Any hints on how to do that and/or what might be wrong on my solution at the moment? How should the PNG file look like? 3 channels? 4 channels? Premultiplied? Thanks for any help, Abraham Abraham Schneider Head of VFX pipeline / VFX Supervisor Türkenstr. 89, 80799 München / Phone +49 89 3809-1096 EMail aschnei...@arri.de Visit us on Facebook!________________________________ ARRI Film & TV Services GmbH Sitz: München Registergericht: Amtsgericht München Handelsregisternummer: HRB 69396 Geschäftsführer: Helge Jürgens, Josef Reidinger _______________________________________________ Nuke-users mailing list Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
