Remove unnecessary metadata file

src/lib.rs

 #![allow(dead_code)]
 
 pub mod spritesheet;
-pub mod stream_metadata;
 
 use std::path::Path;
 
@@ -62,14 +61,6 @@ pub fn extract(
         local_codec.name()?
     );
 
-    let mut metadata = stream_metadata::StreamMetadata::new(
-        avformat_context
-            .input_format()?
-            .determine_mime(local_codec.name()?)?,
-        duration,
-        codec_parameters.bit_rate() / 1000,
-    );
-
     let mut output_frame =
         AVFrame::new().map_err(|error| format_err!("Could not create output frame: {}", error))?;
 
@@ -110,7 +101,6 @@ pub fn extract(
                         if !spritesheet_manager.initialized() {
                             spritesheet_manager
                                 .initialize(frame.width() as u32, frame.height() as u32);
-                            metadata.set_frame_size(frame.width(), frame.height());
                             output_frame
                                 .init(
                                     spritesheet_manager.sprite_width() as i32,
@@ -147,9 +137,5 @@ pub fn extract(
         spritesheet_manager.save()?;
     }
 
-    metadata
-        .save(output_folder.join("media.json"))
-        .map_err(|error| format_err!("Could not write stream metadata: {}", error))?;
-
     Ok(())
 }

src/stream_metadata.rs

-use std::fs::File;
-use std::io::BufWriter;
-use std::path::Path;
-
-use serde::{Deserialize, Serialize};
-
-use media_time::MediaTime;
-
-#[derive(Serialize, Deserialize)]
-pub struct StreamMetadata {
-    content_type: String,
-    duration: i64,
-    bitrate: i64,
-    aspect_ratio: f32,
-    width: i32,
-    height: i32,
-}
-
-impl StreamMetadata {
-    pub fn new(content_type: impl AsRef<str>, duration: MediaTime, bitrate: i64) -> StreamMetadata {
-        StreamMetadata {
-            content_type: String::from(content_type.as_ref()),
-            duration: duration.seconds(),
-            bitrate,
-            aspect_ratio: 0.0,
-            width: 0,
-            height: 0,
-        }
-    }
-
-    pub fn set_frame_size(&mut self, width: i32, height: i32) {
-        self.width = width;
-        self.height = height;
-        self.aspect_ratio = (width as f64 / height as f64) as f32;
-    }
-
-    pub fn save(&self, path: impl AsRef<Path>) -> Result<(), std::io::Error> {
-        serde_json::to_writer(BufWriter::new(File::create(path)?), self)?;
-        Ok(())
-    }
-}