mention avcodec_align_dimensions()

Originally committed as revision 3136 to svn://svn.ffmpeg.org/ffmpeg/trunk
21 years ago · 2b5296d26b
parent 7f2ca68a84
commit 2b5296d26b
1 changed files with 2 additions and 1 deletions
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@ -897,7 +897,8 @@ typedef struct AVCodecContext {
    /**
     * called at the beginning of each frame to get a buffer for it.
     * if pic.reference is set then the frame will be read later by lavc
-     * width and height should be rounded up to the next multiple of 16
+     * avcodec_align_dimensions() should be used to find the required width and
+     * height, as they normally need to be rounded up to the next multiple of 16
     * - encoding: unused
     * - decoding: set by lavc, user can override
     */