init

src-tauri/.gitignore

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+# Generated by Cargo
+# will have compiled files and executables
+/target/
+/gen/schemas

src-tauri/Cargo.toml

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+[package]
+name = "app"
+version = "0.1.0"
+description = "A Tauri App"
+authors = ["you"]
+license = ""
+repository = ""
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "app_lib"
+crate-type = ["staticlib", "cdylib", "rlib"]
+
+[build-dependencies]
+tauri-build = { version = "2.3", features = [] }
+
+[dependencies]
+serde_json = "1.0"
+serde = { version = "1.0", features = ["derive"] }
+tauri = { version = "2.6", features = [] }
+tauri-plugin-dialog = "2.3"
+
+[features]
+# this feature is used for production builds or when `devUrl` points to the filesystem
+# DO NOT REMOVE!!
+custom-protocol = [ "tauri/custom-protocol" ]

src-tauri/build.rs

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+fn main() {
+    tauri_build::build()
+}

src-tauri/capabilities/default.json

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+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "default-plugins",
+  "description": "enables the default permissions",
+  "windows": ["main"],
+  "permissions": [
+    "core:path:default",
+    "core:event:default",
+    "core:window:default",
+    "core:webview:default",
+    "core:app:default",
+    "core:resources:default",
+    "core:menu:default",
+    "core:tray:default",
+    "dialog:allow-open",
+    "dialog:default"
+  ]
+}

src-tauri/src/lib.rs

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+use std::path::Path;
+use std::process::Command;
+use tauri::command;
+
+#[command]
+fn reencode_video(
+    input_path: String,
+    output_format: String,
+    video_codec: Option<String>,
+    preset: Option<String>,
+) -> Result<String, String> {
+    // Determine output path
+    let input = Path::new(&input_path);
+    let stem = input
+        .file_stem()
+        .and_then(|s| s.to_str())
+        .ok_or("Invalid input file name")?;
+    let parent = input.parent().unwrap_or_else(|| Path::new("."));
+    let output_path = parent.join(format!("{}_reencoded.{}", stem, output_format));
+
+    // Set codec and preset, with defaults
+    let codec = video_codec.unwrap_or_else(|| "x264".to_string());
+    let preset = preset.unwrap_or_else(|| "veryslow".to_string());
+    let codec_flag = match codec.as_str() {
+        "x264" => "libx264",
+        "x265" => "libx265",
+        other => other, // fallback, allow custom
+    };
+
+    // Build ffmpeg command
+    let status = Command::new("ffmpeg")
+        .arg("-y")
+        .arg("-i")
+        .arg(&input_path)
+        .arg("-c:v")
+        .arg(codec_flag)
+        .arg("-preset")
+        .arg(&preset)
+        .arg(output_path.to_str().unwrap())
+        .status()
+        .map_err(|e| format!("Failed to start ffmpeg: {}", e))?;
+
+    if status.success() {
+        Ok(format!(
+            "Re-encoded video saved to: {}",
+            output_path.display()
+        ))
+    } else {
+        Err("ffmpeg failed to re-encode the video".to_string())
+    }
+}
+
+#[cfg_attr(mobile, tauri::mobile_entry_point)]
+pub fn run() {
+    tauri::Builder::default()
+        .plugin(tauri_plugin_dialog::init())
+        .invoke_handler(tauri::generate_handler![reencode_video])
+        .run(tauri::generate_context!())
+        .expect("error while running tauri application");
+}

src-tauri/src/main.rs

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+// Prevents additional console window on Windows in release, DO NOT REMOVE!!
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+fn main() {
+    app_lib::run();
+}

src-tauri/tauri.conf.json

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+{
+  "app": {
+    "security": {
+      "csp": null
+    },
+    "windows": [
+      {
+        "fullscreen": false,
+        "height": 600,
+        "resizable": true,
+        "title": "FFMPEGUI",
+        "width": 800
+      }
+    ]
+  },
+  "build": {
+    "beforeBuildCommand": "cd frontend && npm run build",
+    "beforeDevCommand": "cd frontend && npm run dev",
+    "devUrl": "http://localhost:5173",
+    "frontendDist": "../frontend/dist"
+  },
+  "bundle": {
+    "active": true,
+    "icon": [
+      "icons/32x32.png",
+      "icons/128x128.png",
+      "icons/128x128@2x.png",
+      "icons/icon.icns",
+      "icons/icon.ico"
+    ],
+    "targets": "all"
+  },
+  "identifier": "rocks.ipost.code002lover.ffmpegui",
+  "productName": "FFMPEGUI",
+  "version": "0.1.0"
+}