polite bump. Anyone please?
Using drawtext on a transparent background does not seem to work. -- Jannes On 23 February 2015 at 17:55, Jannes Faber <[email protected]> wrote: > Hi, > > Video editting newbie here. > > I'm trying to use addtext onto a box and then overlay that box on a video. > That works fine, except when I try to make the bounding box transparent. > The problem is that the text itself becomes transparent too, not just the > bounding box. > > I asked this question here and included some screenshots and example code: > > > http://video.stackexchange.com/questions/14924/ffmpeg-drawtext-in-a-transparent-box > > The very helpful comment I got so far: > > "I think what's happening is that drawtext isn't writing the alpha > channel, so overlay just sees a rectangle with uniform alpha. The opacity > controls for drawtext just affect how it blends its text into the frames it > draws on." - Peter Cordes > > It feels a bit like a bug in ffmpeg to me, but I'm sure there's a good > explanation. And I'm wondering if there's another/better way to do it? > > Thank you. > > -- > Jannes > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
