diff --git a/examples/mp4copy.rs b/examples/mp4copy.rs
index c5a6c4d..9dacd8a 100644
--- a/examples/mp4copy.rs
+++ b/examples/mp4copy.rs
@@ -4,7 +4,7 @@ use std::io::prelude::*;
 use std::io::{self, BufReader, BufWriter};
 use std::path::Path;
 
-use mp4::{AacConfig, AvcConfig, MediaConfig, MediaType, Mp4Config, Result, TrackConfig};
+use mp4::{AacConfig, AvcConfig, HevcConfig, MediaConfig, MediaType, Mp4Config, Result, TrackConfig};
 
 fn main() {
     let args: Vec<String> = env::args().collect();
@@ -48,6 +48,10 @@ fn copy<P: AsRef<Path>>(src_filename: &P, dst_filename: &P) -> Result<()> {
                     seq_param_set: track.sequence_parameter_set()?.to_vec(),
                     pic_param_set: track.picture_parameter_set()?.to_vec(),
                 }),
+                MediaType::H265 => MediaConfig::HevcConfig(HevcConfig {
+                    width: track.width(),
+                    height: track.height(),
+                }),
                 MediaType::AAC => MediaConfig::AacConfig(AacConfig {
                     bitrate: track.bitrate(),
                     profile: track.audio_profile()?,
diff --git a/src/mp4box/hev1.rs b/src/mp4box/hev1.rs
index 3fbf6a8..887e2f7 100644
--- a/src/mp4box/hev1.rs
+++ b/src/mp4box/hev1.rs
@@ -155,7 +155,7 @@ impl Mp4Box for HvcCBox {
     }
 
     fn box_size(&self) -> u64 {
-        let size = HEADER_SIZE + 7;
+        let size = HEADER_SIZE + 1;
         size
     }
 }