<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/4.6.6"> </HEAD> <BODY> Le mercredi 15 janvier 2014 à 17:08 +0100, Peter Maersk-Moller a écrit : <BLOCKQUOTE TYPE=CITE> Thanks Sebastian. Should have seen that myself. Seems like the alpha plugin can convert I420 to BGRA pretty much like videoconvert though it add the feature I suggested, but with more sophistication. Unless it has a different setup, I could suggest to merge videoconvert and alpha, but that is just an oppinion. </BLOCKQUOTE> Alpha does not do conversion, it simply change the bits that match the color (with some configurable fuzz) into alpha, if needed it will add an alpha channel to the video buffers (may require a copy). It is not very useful to try and merge alpha and videoconvert, as they are not doing the same work except for adding an alpha channel, though alpha is in most cases more efficient at doing so. In production pipeline, you may need to use a combination of both. regards, Nicolas </BODY> </HTML>