diff --git a/src/codec/context.rs b/src/codec/context.rs
index 79407c0..d4432aa 100644
--- a/src/codec/context.rs
+++ b/src/codec/context.rs
@@ -5,7 +5,7 @@ use libc::c_int;
 #[cfg(feature = "ffmpeg_3_1")]
 use super::Parameters;
 use super::{decoder::Decoder, encoder::Encoder, threading, Compliance, Debug, Flags, Id};
-use crate::{ffi::*, media, Codec, Error};
+use crate::{ffi::*, media, Codec, Error, Rational};
 
 pub struct Context {
 	ptr: *mut AVCodecContext,
@@ -121,6 +121,16 @@ impl Context {
 			}
 		}
 	}
+
+	pub fn time_base(&self) -> Rational {
+		unsafe { Rational::from((*self.as_ptr()).time_base) }
+	}
+
+	pub fn set_time_base<R: Into<Rational>>(&mut self, value: R) {
+		unsafe {
+			(*self.as_mut_ptr()).time_base = value.into().into();
+		}
+	}
 }
 
 impl Default for Context {
diff --git a/src/codec/encoder/encoder.rs b/src/codec/encoder/encoder.rs
index 57b5ac4..80672c6 100644
--- a/src/codec/encoder/encoder.rs
+++ b/src/codec/encoder/encoder.rs
@@ -134,16 +134,6 @@ impl Encoder {
 		}
 	}
 
-	pub fn time_base(&self) -> Rational {
-		unsafe { Rational::from((*self.as_ptr()).time_base) }
-	}
-
-	pub fn set_time_base<R: Into<Rational>>(&mut self, value: R) {
-		unsafe {
-			(*self.as_mut_ptr()).time_base = value.into().into();
-		}
-	}
-
 	pub fn set_frame_rate<R: Into<Rational>>(&mut self, value: Option<R>) {
 		unsafe {
 			if let Some(value) = value {