+use std::fmt;
+
+pub use crate::compr::deflate::{DEFLATE_MODE_DESCRIPTION, DEFLATE_OPTION_VALUES, DEFLATE_MODE_NONE, DEFLATE_MODE_FAST, DEFLATE_MODE_BETTER, DEFLATE_MODE_BEST};
+
+/// Common name for keyframe interval option.
+pub const KEYFRAME_OPTION: &str = "key_int";
+/// Common description for keyframe interval option.
+pub const KEYFRAME_OPTION_DESC: &str = "Keyframe interval (0 - automatic)";
+
+/// Common name for frame skipping mode.
+pub const FRAME_SKIP_OPTION: &str = "frame_skip";
+/// Common description for frame skipping mode.
+pub const FRAME_SKIP_OPTION_DESC: &str = "Frame skipping mode";
+/// Frame skipping option value for no skipped frames.
+pub const FRAME_SKIP_OPTION_VAL_NONE: &str = "none";
+/// Frame skipping option value for decoding only keyframes.
+pub const FRAME_SKIP_OPTION_VAL_KEYFRAME: &str = "keyframes";
+/// Frame skipping option value for decoding only intra frames.
+pub const FRAME_SKIP_OPTION_VAL_INTRA: &str = "intra";