django and fastapi apps

schema/models/presets.py

@@ -0,0 +1,128 @@
+"""
+TranscodePreset Schema Definition
+
+Source of truth for preset data model.
+"""
+
+from dataclasses import dataclass, field
+from datetime import datetime
+from typing import List, Optional
+from uuid import UUID
+
+
+@dataclass
+class TranscodePreset:
+    """
+    A reusable transcoding configuration (like Handbrake presets).
+
+    Presets can be builtin (shipped with the app) or user-created.
+    """
+
+    id: UUID
+    name: str
+    description: str = ""
+    is_builtin: bool = False
+
+    # Output container
+    container: str = "mp4"  # mp4, mkv, webm, mov, avi
+
+    # Video settings
+    video_codec: str = "libx264"
+    video_bitrate: Optional[str] = None  # "2M", "5000k"
+    video_crf: Optional[int] = None  # Quality-based (0-51 for x264)
+    video_preset: Optional[str] = None  # ultrafast...veryslow
+    resolution: Optional[str] = None  # "1920x1080", "1280x720"
+    framerate: Optional[float] = None
+
+    # Audio settings
+    audio_codec: str = "aac"
+    audio_bitrate: Optional[str] = None  # "128k", "320k"
+    audio_channels: Optional[int] = None  # 2 for stereo
+    audio_samplerate: Optional[int] = None  # 44100, 48000
+
+    # Advanced: extra FFmpeg arguments
+    extra_args: List[str] = field(default_factory=list)
+
+    # Timestamps
+    created_at: Optional[datetime] = None
+    updated_at: Optional[datetime] = None
+
+
+BUILTIN_PRESETS = [
+    {
+        "name": "DaVinci Resolve",
+        "description": "MPEG-4 (xvid) + MP3 - Compatible with DaVinci Resolve Free",
+        "container": "avi",
+        "video_codec": "mpeg4",
+        "video_crf": 5,
+        "audio_codec": "libmp3lame",
+        "audio_bitrate": "320k",
+        "audio_samplerate": 48000,
+        "extra_args": ["-vtag", "xvid", "-pix_fmt", "yuv420p"],
+    },
+    {
+        "name": "Copy (Trim Only)",
+        "description": "Stream copy - No transcoding, fast trimming only",
+        "container": "mp4",
+        "video_codec": "copy",
+        "audio_codec": "copy",
+    },
+    {
+        "name": "Web H.264",
+        "description": "H.264 + AAC - General web playback",
+        "container": "mp4",
+        "video_codec": "libx264",
+        "video_crf": 23,
+        "video_preset": "medium",
+        "audio_codec": "aac",
+        "audio_bitrate": "128k",
+    },
+    {
+        "name": "Web H.265",
+        "description": "HEVC + AAC - Smaller files, modern browsers",
+        "container": "mp4",
+        "video_codec": "libx265",
+        "video_crf": 28,
+        "video_preset": "medium",
+        "audio_codec": "aac",
+        "audio_bitrate": "128k",
+    },
+    {
+        "name": "DNxHR HQ",
+        "description": "DNxHR High Quality - Professional editing",
+        "container": "mov",
+        "video_codec": "dnxhd",
+        "audio_codec": "pcm_s16le",
+        "audio_samplerate": 48000,
+        "extra_args": ["-profile:v", "dnxhr_hq", "-pix_fmt", "yuv422p"],
+    },
+    {
+        "name": "H.264 NVENC",
+        "description": "NVIDIA GPU encoding - Fast H.264",
+        "container": "mp4",
+        "video_codec": "h264_nvenc",
+        "video_bitrate": "10M",
+        "audio_codec": "aac",
+        "audio_bitrate": "192k",
+        "extra_args": ["-preset", "p4", "-rc", "vbr", "-cq", "19"],
+    },
+    {
+        "name": "HEVC NVENC",
+        "description": "NVIDIA GPU encoding - HEVC/H.265",
+        "container": "mp4",
+        "video_codec": "hevc_nvenc",
+        "video_bitrate": "8M",
+        "audio_codec": "aac",
+        "audio_bitrate": "192k",
+        "extra_args": ["-preset", "p4", "-rc", "vbr", "-cq", "23"],
+    },
+    {
+        "name": "Archive ProRes",
+        "description": "Apple ProRes 422 HQ - Archival quality",
+        "container": "mov",
+        "video_codec": "prores_ks",
+        "audio_codec": "pcm_s16le",
+        "audio_samplerate": 48000,
+        "extra_args": ["-profile:v", "3"],  # ProRes 422 HQ
+    },
+]