[Libav-user] How to Convert AV_PIX_FMT_RGB24 to AV_PIX_FMT_YUV420P
Carl Eugen Hoyos
cehoyos at ag.or.at
Thu Feb 14 10:52:46 CET 2013
Chris Share <cpsmusic at ...> writes:
> The scaling_video.c is close to what I need however the
> conversion is the opposite of what I want. What I'm
> not clear about is how to change the "fill_yuv_image"
> function to something like "fill_rgb_image".
The function is used to provide an artificial source image.
You don't need it since you already have an input image.
> How does the RGB data get written into the
> "uint8_t *data"? Is it written consecutively (all R
> values get written to data, all G values to data, etc.)?
That would be planar RGB, see PIX_FMT_GBR.
RGB is a packed format, see libavutil/pixfmt.h
Note that all this has limited relevance for you if you
don't rescale yourself but use the scale filter (or
More information about the Libav-user