diff options
| -rw-r--r-- | libavutil/pixdesc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavutil/pixdesc.h b/libavutil/pixdesc.h index d9999058e4..a6056fe1c0 100644 --- a/libavutil/pixdesc.h +++ b/libavutil/pixdesc.h @@ -107,11 +107,12 @@ typedef struct AVPixFmtDescriptor { /** * Parameters that describe how pixels are packed. - * If the format has 2 or 4 components, then alpha is last. * If the format has 1 or 2 components, then luma is 0. * If the format has 3 or 4 components: * if the RGB flag is set then 0 is red, 1 is green and 2 is blue; * otherwise 0 is luma, 1 is chroma-U and 2 is chroma-V. + * + * If present, the Alpha channel is always the last component. */ AVComponentDescriptor comp[4]; |