Update encoder API docs regarding forcing the frame types

Author: rhutsAMD

amf/doc/AMF_Video_Encode_API.md

@@ -1943,7 +1943,7 @@ Picture structure.
 `AMF_VIDEO_ENCODER_PICTURE_TYPE_NONE`
 
 **Description:**
-Forces the picture type (to use this feature, set `AMF_VIDEO_ENCODER_IDR_PERIOD` to `0`).
+Forces the picture type (to use this feature, set `AMF_VIDEO_ENCODER_IDR_PERIOD` to `0`) determined by the picture management with the following precedence `IDR`, `I`, `P` and `B`. Force picture type will only take effect to override type with lower precedence.
 `B` feature is not supported by VCE 1.0.
 
 ---

amf/doc/AMF_Video_Encode_API.pdf

@@ -1897,7 +1897,7 @@ If `true`, force insert sequence header with current frame.
 `AMF_VIDEO_ENCODER_AV1_FORCE_FRAME_TYPE_NONE`
 
 **Description:**
-Forces the frame type.
+Forces the frame type determined by the picture management with the following precedence `KEY`, `INTRA_ONLY`, `SWITCH` and `SHOW_EXISTING`. Force frame type will only take effect to override types with lower precedence.
 
 ---
 

amf/doc/AMF_Video_Encode_AV1_API.md

@@ -1721,7 +1721,7 @@ Inserts AUD.
 `AMF_VIDEO_ENCODER_HEVC_PICTURE_TYPE_NONE`
 
 **Description:**
-Forces the picture type.
+Forces the picture type determined by the picture management with the following precedence `IDR`, `I` and `P`. Force picture type will only take effect to override types with lower precedence.
 
 ---