It is transcoded correctly with ffmpeg -i 1bpptransparentwhite.gif out.png ffmpeg -i 1bpptransparentwhite.gif -pixfmt bgra out.png ffmpeg -i 1bpptransparentwhite.gif -f image2 out.gif. whether it uses alpha transparency or whether it is tileable (description of these parameters could be. The sample has a two-colour palette: Solid black and transparent black. I've tried with a gif file and it works when "preserve transparency" is enabled. I Implemented Video and GIF Playback with FFmpeg. The transparency doesn't show up with image overlay preset. This is quite possibly causing the other artefacting too. Any pixel can either be fully visible or fully transparent, so your nice little fades at the edges of each star get destroyed. FFmpeg is a free and open-source media file conversion software with an. Using ffmpeg/libav DLL decoder v58.91.100 Try recreating it using images without transparency. PNG also supports animations with better transparency (try our GIF to APNG). Video: Aspect=1.00, Decoding format=I420/YV12 I'm trying to encode a video with alpha channel, here is what reaper show in source properties: I wonder if that means that REAPER can't use alpha information of YUVA videos. Which format are you using? Would it be possible to upload a snippet of the video?ĮDIT: If I'm not mistaken, REAPER's video processor can choose from three colorspaces: RGBA, YV12, or YUY2. I don't know if REAPER can handle transparency in any and all video formats. The transparent mkv worked fine as long as I added the "Image overlay" video processor preset as a take or track FX. Im going to try to work on that this weekend. I quickly tested this with a transparent gif and a transparent mkv, and only the gif has that option in Source properties, so if your video doesn't give that option, it is probably not required. GIF and APNG both support transparency, so they can be used for animated overlays - just the sort of thing youd use alpha-channel video for. Ive got a fix for this that handles stills, but theres a bug in the gif codec that doesnt handle the resulting transparencies correctly when animating, so animated gifs coming out of this are not correct.
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