Are there any video codecs that support transparency?  It looks like few people have achieved this online and only with exotic formats.  For example,

https://stackoverflow.com/questions/644684/turn-image-sequence-into-video-with-transparency/12951156

ChimeraX uses ffmpeg to encode videos.  It first saves image files for every frame and it would be possible to save those with transparency.  But you'd have to make a good case that that has some value for us to add the option to the movie command.

Tom


On Jun 14, 2019, at 6:34 AM, Norberto Escudero wrote:


Hi,

I have succesfully created images with transparent background, but it seems is an impossible task for a movie. Is there any way around this?

Thanks and regards,

--
Dr Norberto Escudero Urquijo
Prof. A. Warren's group
Cambridge Institute for Medical Research (CIMR)
Hills Road, 
Cambridge, CB2 0XY
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