Inicial, descargar y conversion basicas

utils/downloader.py

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+import os
+import subprocess
+import re
+from PyQt6.QtCore import QThread, pyqtSignal
+
+class VideoDownloader(QThread):
+    progress_signal = pyqtSignal(str)
+    finished_signal = pyqtSignal(bool, str)
+
+    def __init__(self, url, download_path, bin_dir="bin"):
+        super().__init__()
+        self.url = url
+        self.download_path = download_path
+        self.bin_dir = os.path.abspath(bin_dir)
+
+    def run(self):
+        ytdlp_exe = os.path.join(self.bin_dir, "yt-dlp.exe")
+        ffmpeg_exe = os.path.join(self.bin_dir, "ffmpeg.exe")
+
+        if not os.path.exists(ytdlp_exe):
+            self.finished_signal.emit(False, f"No se encontró yt-dlp.exe en: {ytdlp_exe}")
+            return
+
+        if not os.path.exists(ffmpeg_exe):
+            self.finished_signal.emit(False, f"No se encontró ffmpeg.exe en: {ffmpeg_exe}")
+            return
+
+        # Creamos una copia del entorno de sistema y añadimos la carpeta 'bin' al PATH
+        # Esto asegura que tanto yt-dlp como subprocess encuentren ffmpeg y ffprobe sin fallar
+        env = os.environ.copy()
+        env["PATH"] = self.bin_dir + os.pathsep + env.get("PATH", "")
+
+        # Comando idéntico a tu terminal
+        command = [
+            ytdlp_exe,
+            "-f", "bestvideo[ext=mp4]+bestaudio[ext=m4a]/bestvideo+bestaudio",
+            "--merge-output-format", "mp4",
+            "--ffmpeg-location", self.bin_dir,
+            "-P", self.download_path,
+            self.url
+        ]
+
+        try:
+            startupinfo = None
+            if os.name == 'nt':
+                startupinfo = subprocess.STARTUPINFO()
+                startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
+
+            process = subprocess.Popen(
+                command,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.STDOUT,
+                text=True,
+                startupinfo=startupinfo,
+                env=env,  # Le pasamos el entorno enriquecido con el PATH a bin
+                encoding='utf-8',
+                errors='replace'
+            )
+
+            for line in process.stdout:
+                line_str = line.strip()
+                if line_str:
+                    # Imprime en la consola de Python para poder ver cualquier advertencia de yt-dlp
+                    print(line_str)
+                    
+                    if "[download]" in line_str and "%" in line_str:
+                        match = re.search(r'(\d+\.\d+%)', line_str)
+                        if match:
+                            self.progress_signal.emit(f"Descargando: {match.group(1)}")
+                    elif "[Merger]" in line_str or "Merging" in line_str:
+                        self.progress_signal.emit("Uniendo vídeo y audio en MP4...")
+
+            process.wait()
+
+            if process.returncode == 0:
+                self.finished_signal.emit(True, "¡Vídeo descargado y unido correctamente!")
+            else:
+                self.finished_signal.emit(False, "Error durante la descarga o la fusión.")
+
+        except Exception as e:
+            self.finished_signal.emit(False, f"Error de ejecución: {str(e)}")