Add spec reference

2 years ago · bfed4ee913
1 changed files with 4 additions and 0 deletions
--- a/src/ImageSharp/Formats/Heif/Av1/Readme.md
+++ b/src/ImageSharp/Formats/Heif/Av1/Readme.md
@ -46,3 +46,7 @@ A block is the smallest are of the image which has the same transformation param
 ## ModeInfo

 The smallest unit in the frame. It determines the parameters for an area of 4 by 4 pixels.
+
+# References
+
+[AV1 specification](https://aomediacodec.github.io/av1-spec/av1-spec.pdf)