On Sat, Sep 8, 2012 at 4:39 PM, Gonzalo Garramuno <[email protected]> wrote: > > 2012/9/7 Arash Cordi <[email protected]> >> >> most video formats only support yuv. there's nothing you can do about it. >> why would you want to do that anyway? >> > I have my movie data in RGBA and would like to avoid translation to encode > faster and to keep the data the same. > > Gonzalo Garramuño > [email protected]
If your main concern is "keep the data the same", you probably need a lossless encoder. There exist a few, see for example the summary: http://www.media-matters.net/docs/resources/Digital%20Files/General/lossless_codecs_test_en.pdf Regarding performance, typically the resources required for RGB to YUV conversion are negligible compared to encoding, so you should be careful to choose the encoder that delivers best speed for your compression requirements, and let ffmpeg take care of color space. The tricky part is if you want to send reliably the transparency information (the A of RGBA). Very few players respect the alpha channel. BR, Alex Cohn _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
