diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 09c7bcb..581704e 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -43,6 +43,17 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "ahash"
+version = "0.7.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "891477e0c6a8957309ee5c45a6368af3ae14bb510732d2684ffa19af310920f9"
+dependencies = [
+ "getrandom 0.2.17",
+ "once_cell",
+ "version_check",
+]
+
 [[package]]
 name = "aho-corasick"
 version = "1.1.4"
@@ -73,6 +84,23 @@ version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
+[[package]]
+name = "android_log-sys"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84521a3cf562bc62942e294181d9eef17eb38ceb8c68677bc49f144e4c3d4f8d"
+
+[[package]]
+name = "android_logger"
+version = "0.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dbb4e440d04be07da1f1bf44fb4495ebd58669372fe0cffa6e48595ac5bd88a3"
+dependencies = [
+ "android_log-sys",
+ "env_filter",
+ "log",
+]
+
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -106,6 +134,12 @@ dependencies = [
  "rustversion",
 ]
 
+[[package]]
+name = "arrayvec"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
+
 [[package]]
 name = "assert_cfg"
 version = "0.1.0"
@@ -533,6 +567,30 @@ dependencies = [
  "piper",
 ]
 
+[[package]]
+name = "borsh"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfd1e3f8955a5d7de9fab72fc8373fade9fb8a703968cb200ae3dc6cf08e185a"
+dependencies = [
+ "borsh-derive",
+ "bytes",
+ "cfg_aliases",
+]
+
+[[package]]
+name = "borsh-derive"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfcfdc083699101d5a7965e49925975f2f55060f94f9a05e7187be95d530ca59"
+dependencies = [
+ "once_cell",
+ "proc-macro-crate 3.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "brotli"
 version = "8.0.2"
@@ -580,6 +638,40 @@ version = "3.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
 
+[[package]]
+name = "byte-unit"
+version = "5.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37bcaa4a0975bed4a760af3efe4368825098ce5f9d37a30c5a021d635dc63d8f"
+dependencies = [
+ "rust_decimal",
+ "schemars 1.2.1",
+ "serde",
+ "utf8-width",
+]
+
+[[package]]
+name = "bytecheck"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23cdc57ce23ac53c931e88a43d06d070a6fd142f2617be5855eb75efc9beb1c2"
+dependencies = [
+ "bytecheck_derive",
+ "ptr_meta",
+ "simdutf8",
+]
+
+[[package]]
+name = "bytecheck_derive"
+version = "0.6.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3db406d29fbcd95542e92559bed4d8ad92636d1ca8b3b72ede10b4bcc010e659"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "bytemuck"
 version = "1.25.0"
@@ -1373,6 +1465,16 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "env_filter"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bf3c259d255ca70051b30e2e95b5446cdb8949ac4cd22c0d7fd634d89f568e2"
+dependencies = [
+ "log",
+ "regex",
+]
+
 [[package]]
 name = "equivalent"
 version = "1.0.2"
@@ -1436,6 +1538,15 @@ dependencies = [
  "simd-adler32",
 ]
 
+[[package]]
+name = "fern"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4316185f709b23713e41e3195f90edef7fb00c3ed4adc79769cf09cc762a3b29"
+dependencies = [
+ "log",
+]
+
 [[package]]
 name = "field-offset"
 version = "0.3.6"
@@ -1500,6 +1611,7 @@ dependencies = [
  "tauri-plugin-fs",
  "tauri-plugin-http",
  "tauri-plugin-libmpv",
+ "tauri-plugin-log",
  "tauri-plugin-notification",
  "tauri-plugin-process",
  "tauri-plugin-shell",
@@ -2077,6 +2189,9 @@ name = "hashbrown"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+dependencies = [
+ "ahash",
+]
 
 [[package]]
 name = "hashbrown"
@@ -3011,6 +3126,9 @@ name = "log"
 version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
+dependencies = [
+ "value-bag",
+]
 
 [[package]]
 name = "lru-slab"
@@ -3307,6 +3425,15 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "num_threads"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c7398b9c8b70908f6371f47ed36737907c87c52af34c268fed0bf0ceb92ead9"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "objc2"
 version = "0.6.4"
@@ -3916,6 +4043,26 @@ version = "2.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33cb294fe86a74cbcf50d4445b37da762029549ebeea341421c7c70370f86cac"
 
+[[package]]
+name = "ptr_meta"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0738ccf7ea06b608c10564b31debd4f5bc5e197fc8bfe088f68ae5ce81e7a4f1"
+dependencies = [
+ "ptr_meta_derive",
+]
+
+[[package]]
+name = "ptr_meta_derive"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16b845dbfca988fa33db069c0e230574d15a3088f147a87b64c7589eb662c9ac"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "publicsuffix"
 version = "2.3.0"
@@ -4197,6 +4344,15 @@ version = "0.8.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
 
+[[package]]
+name = "rend"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71fe3824f5629716b1589be05dacd749f6aa084c87e00e016714a8cdfccc997c"
+dependencies = [
+ "bytecheck",
+]
+
 [[package]]
 name = "reqwest"
 version = "0.12.28"
@@ -4321,6 +4477,35 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "rkyv"
+version = "0.7.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2297bf9c81a3f0dc96bc9521370b88f054168c29826a75e89c55ff196e7ed6a1"
+dependencies = [
+ "bitvec",
+ "bytecheck",
+ "bytes",
+ "hashbrown 0.12.3",
+ "ptr_meta",
+ "rend",
+ "rkyv_derive",
+ "seahash",
+ "tinyvec",
+ "uuid",
+]
+
+[[package]]
+name = "rkyv_derive"
+version = "0.7.46"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84d7b42d4b8d06048d3ac8db0eb31bcb942cbeb709f0b5f2b2ebde398d3038f5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
 [[package]]
 name = "rlimit"
 version = "0.10.2"
@@ -4340,6 +4525,23 @@ dependencies = [
  "ordered-multimap",
 ]
 
+[[package]]
+name = "rust_decimal"
+version = "1.42.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be2a24f50780bc85f09cc6ac299bdf1424302742d77221106859c9d8b102126a"
+dependencies = [
+ "arrayvec",
+ "borsh",
+ "bytes",
+ "num-traits",
+ "rand 0.8.6",
+ "rkyv",
+ "serde",
+ "serde_json",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "rustc-hash"
 version = "2.1.2"
@@ -4529,6 +4731,12 @@ version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
 
+[[package]]
+name = "seahash"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1c107b6f4780854c8b126e228ea8869f4d7b71260f962fefb57b996b8959ba6b"
+
 [[package]]
 name = "security-framework"
 version = "3.7.0"
@@ -4998,6 +5206,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
  "proc-macro2",
+ "quote",
  "unicode-ident",
 ]
 
@@ -5375,6 +5584,28 @@ dependencies = [
  "thiserror 2.0.18",
 ]
 
+[[package]]
+name = "tauri-plugin-log"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7545bd67f070a4500432c826e2e0682146a1d6712aee22a2786490156b574d93"
+dependencies = [
+ "android_logger",
+ "byte-unit",
+ "fern",
+ "log",
+ "objc2",
+ "objc2-foundation",
+ "serde",
+ "serde_json",
+ "serde_repr",
+ "swift-rs",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+ "time",
+]
+
 [[package]]
 name = "tauri-plugin-notification"
 version = "2.3.3"
@@ -5654,7 +5885,9 @@ checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
  "itoa",
+ "libc",
  "num-conv",
+ "num_threads",
  "powerfmt",
  "serde_core",
  "time-core",
@@ -6170,6 +6403,12 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09cc8ee72d2a9becf2f2febe0205bbed8fc6615b7cb429ad062dc7b7ddd036a9"
 
+[[package]]
+name = "utf8-width"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1292c0d970b54115d14f2492fe0170adf21d68a1de108eebc51c1df4f346a091"
+
 [[package]]
 name = "utf8_iter"
 version = "1.0.4"
@@ -6188,6 +6427,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "value-bag"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ba6f5989077681266825251a52748b8c1d8a4ad098cc37e440103d0ea717fc0"
+
 [[package]]
 name = "version-compare"
 version = "0.2.1"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index 7799eda..991277e 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -37,6 +37,7 @@ tauri-plugin-single-instance = "2"
 tauri-plugin-updater = "2"
 tauri-plugin-process = "2"
 tauri-plugin-dialog = "2"
+tauri-plugin-log = "2"
 
 [target.'cfg(target_os = "linux")'.dependencies]
 gtk = "0.18"
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 870d5d7..47c1e9e 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -301,6 +301,15 @@ pub fn run() {
                 }
             }
         }))
+        .plugin(
+            tauri_plugin_log::Builder::new()
+                .level(log::LevelFilter::Debug)
+                .targets([
+                    tauri_plugin_log::Target::new(tauri_plugin_log::TargetKind::LogDir { file_name: None }),
+                    tauri_plugin_log::Target::new(tauri_plugin_log::TargetKind::Stdout),
+                ])
+                .build(),
+        )
         .plugin(tauri_plugin_updater::Builder::new().build())
         .plugin(tauri_plugin_process::init())
         .plugin(tauri_plugin_dialog::init())
diff --git a/src-tauri/src/mpv_render.rs b/src-tauri/src/mpv_render.rs
index 08936d3..260d40e 100644
--- a/src-tauri/src/mpv_render.rs
+++ b/src-tauri/src/mpv_render.rs
@@ -673,6 +673,7 @@ impl MpvRenderer {
                     let text = unsafe { CStr::from_ptr(msg.text) }.to_string_lossy();
                     let text = text.trim_end();
                     if !text.is_empty() {
+                        log::debug!("mpv: {text}");
                         if self.log_ring.len() >= 20 {
                             self.log_ring.pop_front();
                         }
diff --git a/src-tauri/src/player.rs b/src-tauri/src/player.rs
index 5f3cf69..0b0951d 100644
--- a/src-tauri/src/player.rs
+++ b/src-tauri/src/player.rs
@@ -256,6 +256,7 @@ pub fn player_load(
     start_at: Option<u64>,
     total_duration: Option<u64>,
 ) -> Result<(), String> {
+    log::info!("player_load: url={url} start_at={start_at:?} total_duration={total_duration:?}");
     *state.thumb_url.lock().unwrap() = Some(url.clone());
 
     #[cfg(any(target_os = "linux", target_os = "windows", target_os = "macos"))]
@@ -263,6 +264,7 @@ pub fn player_load(
         if let Some(surface) = ensure_native_player_surface(&app, &state) {
             return surface.load(url, start_at, total_duration);
         }
+        log::warn!("player_load: no native player surface available, falling back to headless renderer");
     }
 
     let _ = app;
diff --git a/src-tauri/src/windows_player_surface.rs b/src-tauri/src/windows_player_surface.rs
index 7146f69..638791a 100644
--- a/src-tauri/src/windows_player_surface.rs
+++ b/src-tauri/src/windows_player_surface.rs
@@ -129,6 +129,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
     let app = app_handle.clone();
 
     std::thread::spawn(move || {
+        log::info!("player surface: install thread starting");
         // Register the OpenGL-capable window class once per process.
         static CLASS_REGISTERED: OnceLock<()> = OnceLock::new();
         CLASS_REGISTERED.get_or_init(|| {
@@ -168,6 +169,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
             )
         };
         if child_hwnd == 0 {
+            log::error!("player surface: CreateWindowExW failed for mpv surface");
             let _ = setup_tx.send(Err("CreateWindowExW failed for mpv surface".to_string()));
             return;
         }
@@ -180,6 +182,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
         // WGL context setup
         let hdc = unsafe { GetDC(child_hwnd) };
         if hdc == 0 {
+            log::error!("player surface: GetDC failed");
             let _ = setup_tx.send(Err("GetDC failed".to_string()));
             return;
         }
@@ -195,20 +198,24 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
 
         let pf_idx = unsafe { ChoosePixelFormat(hdc, &pfd) };
         if pf_idx == 0 {
+            log::error!("player surface: ChoosePixelFormat failed");
             let _ = setup_tx.send(Err("ChoosePixelFormat failed".to_string()));
             return;
         }
         if unsafe { SetPixelFormat(hdc, pf_idx, &pfd) } == FALSE {
+            log::error!("player surface: SetPixelFormat failed");
             let _ = setup_tx.send(Err("SetPixelFormat failed".to_string()));
             return;
         }
 
         let hglrc = unsafe { wglCreateContext(hdc) };
         if hglrc == 0 {
+            log::error!("player surface: wglCreateContext failed");
             let _ = setup_tx.send(Err("wglCreateContext failed".to_string()));
             return;
         }
         if unsafe { wglMakeCurrent(hdc, hglrc) } == FALSE {
+            log::error!("player surface: wglMakeCurrent failed");
             unsafe { wglDeleteContext(hglrc) };
             let _ = setup_tx.send(Err("wglMakeCurrent failed".to_string()));
             return;
@@ -224,8 +231,12 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
             let mut renderer = state.player_renderer.lock().unwrap();
             if renderer.is_none() {
                 match crate::mpv_render::MpvRenderer::new() {
-                    Ok(r) => *renderer = Some(r),
+                    Ok(r) => {
+                        log::info!("player surface: MpvRenderer::new() succeeded");
+                        *renderer = Some(r);
+                    }
                     Err(e) => {
+                        log::error!("player surface: MpvRenderer::new() failed: {e}");
                         unsafe {
                             wglMakeCurrent(0 as _, 0 as _);
                             wglDeleteContext(hglrc);
@@ -237,6 +248,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
             }
             if let Some(r) = renderer.as_mut() {
                 if let Err(e) = r.prepare_opengl_context() {
+                    log::error!("player surface: prepare_opengl_context() failed: {e}");
                     unsafe {
                         wglMakeCurrent(0 as _, 0 as _);
                         wglDeleteContext(hglrc);
@@ -252,6 +264,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
             }
         }
 
+        log::info!("player surface: setup complete, entering render loop");
         let _ = setup_tx.send(Ok(()));
 
         // Render + command loop
@@ -263,6 +276,7 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
             while let Ok(cmd) = receiver.try_recv() {
                 match cmd {
                     SurfaceCommand::Load { url, start_at, .. } => {
+                        log::info!("player surface: loading url={url} start_at={start_at:?}");
                         unsafe { ShowWindow(child_hwnd, SW_SHOW) };
                         unsafe {
                             SetWindowPos(
@@ -282,11 +296,16 @@ pub fn install(app_handle: AppHandle) -> Result<NativePlayerSurface, String> {
                         let mut renderer = state.player_renderer.lock().unwrap();
                         if let Some(r) = renderer.as_mut() {
                             if let Err(e) = r.load(&url, start_at) {
+                                log::error!("player surface: load() failed: {e}");
                                 drop(renderer);
                                 let _ = app.emit("native-player-error", e);
                                 visible = false;
                                 unsafe { ShowWindow(child_hwnd, SW_HIDE) };
+                            } else {
+                                log::info!("player surface: load() command accepted by mpv");
                             }
+                        } else {
+                            log::error!("player surface: Load command received but renderer is None");
                         }
                     }
                     SurfaceCommand::Hide => {
@@ -378,7 +397,9 @@ fn check_player_events(app: &AppHandle) {
     };
     for event in events {
         let crate::mpv_render::PlayerEvent::EndFile { eof, error } = event;
+        log::info!("player surface: mpv END_FILE event eof={eof} error={error:?}");
         if let Some(message) = error {
+            log::error!("player surface: stream failed to play: {message}");
             let _ = app.emit("native-player-error", message);
             continue;
         }
@@ -388,8 +409,10 @@ fn check_player_events(app: &AppHandle) {
         let next_sub = state.next_ep_subtitle.lock().unwrap().clone();
         let auto_play = *state.auto_play_next_episode.lock().unwrap();
         if !next_sub.is_empty() && auto_play {
+            log::info!("player surface: eof reached, auto-playing next episode");
             let _ = app.emit("native-player-next-episode", ());
         } else {
+            log::info!("player surface: eof reached, closing player");
             let _ = app.emit("native-player-close-requested", ());
         }
     }