fix: remove unwraps and add some error handling.

src/main.rs

@@ -27,7 +27,13 @@ fn main() {
         .collect::<Vec<_>>();
     info!("Found {} file(s) to be processed.", input_files.len());
 
+    let mut success_count = 0;
+
     for file in input_files {
+        let mut fail = |job: &TranscodeJob, remarks: &str| {
+            error!("Failed to process file {}: {}", job.input, remarks);
+        };
+
         let mut output_path = file.clone();
         output_path.set_extension(&config.ffmpeg.output.format);
         let output_path = PathBuf::from(&config.files.output_path).join(output_path.file_name().unwrap()); // TODO: This is a bit of a mess.
@@ -43,15 +49,34 @@ fn main() {
         }
 
         info!("Processing file {}.", job.input);
-        let mut child = job.run(&config.ffmpeg).unwrap();
+        let mut child = match job.run(&config.ffmpeg) {
+            Ok(child) => child,
+            Err(e) => {
+                fail(&job, &format!("Failed to start ffmpeg process: {}", e));
+                continue;
+            }
+        };
         if (config.ffmpeg.process.niceness.unwrap_or(0)) > 0 {
-            renice(child.id(), config.ffmpeg.process.niceness.unwrap_or(0))
-                .expect("Failed to renice process.");
+            match renice(child.id(), config.ffmpeg.process.niceness.unwrap()) {
+                Ok(_) => {},
+                Err(e) => {
+                    error!("Failed to renice ffmpeg process: {}", e);
+                }
+            }
+        }
+
+        if let Err(e) = child.wait() {
+            fail(&job, &format!("Failed to wait for ffmpeg process: {}", e));
+            continue;
         }
-        child.wait().expect("Failed to wait for process.");
 
         // TODO: Cleanup
+
+        info!("Finished processing file {}.", job.input);
+        success_count += 1;
     }
+
+    info!("Finished processing {} file(s).", success_count);
 }
 
 fn setup_logger(config: &configuration::Config) {