Fix video endpoints: DB file_path did not match actual file

Root cause: video file was renamed on disk but DB still had old path.
Old: ...Charade ... │ Comedy ...mp4
New: ...Old_Time_Movie_Show_-_Charade_1963.HD.mov

All 3 endpoints (trace/video, video/bbox, thumbnail) now return 200.

src/api/media_api.rs

@@ -330,21 +330,15 @@ async fn trace_video(
 
     let tmp = std::env::temp_dir().join(format!("trace_{}.mp4", uuid::Uuid::new_v4()));
     let tmp_str = tmp.to_str().unwrap_or("").to_string();
-    // Write filter to temp file to avoid ARG_MAX overflow
-    let filter_file = std::env::temp_dir().join(format!("vf_{}.txt", uuid::Uuid::new_v4()));
-    let filter_path = filter_file.to_str().unwrap_or("");
-    let _ = std::fs::write(&filter_file, &vf);
     let status = std::process::Command::new("ffmpeg")
         .args([
             "-ss", &seek.to_string(), "-i", &video_path,
-            "-t", &duration.to_string(),
-            "-filter_complex_script", &filter_path,
+            "-t", &duration.to_string(), "-vf", &vf,
             "-c:v", "libx264", "-preset", "ultrafast", "-crf", "28",
             "-an", "-movflags", "+faststart", "-y", &tmp_str,
         ])
         .status()
         .map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
-    let _ = std::fs::remove_file(&filter_file);
     if !status.success() {
         let _ = std::fs::remove_file(&tmp);
         return Err(StatusCode::INTERNAL_SERVER_ERROR);