289 lines
8.5 KiB
Python
289 lines
8.5 KiB
Python
import argparse
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import json
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import subprocess
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import sys
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from pathlib import Path
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from pymediainfo import MediaInfo
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from typing import Optional, Tuple
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__version__ = "0.1.2"
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def exit_print(message: Optional[str] = "", exit_code: Optional[int] = 0) -> None:
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print(message)
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sys.exit(exit_code)
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def parse_arguments() -> Tuple[Path, Path, Path, bool, bool, Path]:
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parser = argparse.ArgumentParser(prog="DV Check")
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parser.add_argument("-f", "--ffmpeg", type=str, help="Path to FFMPEG executable.")
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parser.add_argument(
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"-d", "--dovi-tool", type=str, help="Path to dovi_tool executable."
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)
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parser.add_argument(
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"-p",
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"--prompt",
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action="store_true",
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help="Prompt user with an exit code of 1 if FEL with a message.",
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)
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parser.add_argument(
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"-c",
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"--create-fel-mkv",
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action="store_true",
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help="Create FEL output mkv if FEL layer exists (input name_el.ext).",
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)
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parser.add_argument(
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"-w", "--working-dir", type=str, help="Directory to store working files in."
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)
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parser.add_argument("input", type=str, help="Path to input file.")
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args = parser.parse_args()
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if args.create_fel_mkv and args.prompt:
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exit_print("You can only supply one of '-c' or '-p'.", 1)
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if not args.input:
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exit_print("Program requires an input file", 1)
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if not args.ffmpeg:
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exit_print("Program requires FFEMPG", 1)
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if not args.dovi_tool:
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exit_print("Program requires dovi_tool", 1)
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working_dir = (
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Path(args.working_dir) if args.working_dir else Path(args.input).parent
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)
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return (
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Path(args.input),
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Path(args.ffmpeg),
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Path(args.dovi_tool),
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args.prompt,
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args.create_fel_mkv,
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working_dir,
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)
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def data_path(file_input: Path, working_dir: Path) -> Path:
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return working_dir / f"{file_input.stem}_el_data.json"
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def load_existing_data(file_input: Path, working_dir: Path) -> Optional[dict]:
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json_path = data_path(file_input, working_dir)
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if not json_path.exists():
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return None
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try:
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with open(json_path, "r") as json_file:
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data = json.load(json_file)
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if (
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data
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and file_input.name == data.get("filename")
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and data.get("rpu_status")
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):
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return data
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except json.JSONDecodeError:
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json_path.unlink()
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return None
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def detect_el_layer(file_input: Path) -> bool:
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if not file_input.exists() or not file_input.is_file():
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exit_print("Input file not found", 1)
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if file_input.suffix not in {".mp4", ".mkv"}:
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exit_print("Only MP4/MKV inputs are supported", 1)
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media_info = MediaInfo.parse(file_input)
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try:
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video_track = media_info.video_tracks[0]
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if "Dolby Vision" in video_track.hdr_format:
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if "EL" in video_track.hdr_format_settings:
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return True
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exit_print("EL layer not detected", 0)
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exit_print("No Dolby Vision metadata detected", 0)
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except IndexError:
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exit_print("Input has no video track", 1)
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return False
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def read_rpu(
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file_input: Path, ffmpeg_path: Path, dovi_tool_path: Path, working_dir: Path
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) -> Optional[str]:
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output_bin = file_input.with_suffix(".bin")
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ffmpeg_command = [
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str(ffmpeg_path),
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"-ss",
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"00:00:10",
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"-i",
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str(file_input),
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"-t",
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"00:00:01",
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"-map",
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"0:v:0",
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"-c:v:0",
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"copy",
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"-bsf:v",
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"hevc_mp4toannexb",
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"-f",
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"hevc",
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"-",
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"-hide_banner",
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"-v",
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"panic",
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]
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dovi_tool_command = [str(dovi_tool_path), "extract-rpu", "-", "-o", str(output_bin)]
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with subprocess.Popen(
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ffmpeg_command, stdout=subprocess.PIPE, cwd=file_input.parent
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) as ffmpeg_proc:
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with subprocess.Popen(
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dovi_tool_command, stdin=ffmpeg_proc.stdout, cwd=file_input.parent
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) as dovi_proc:
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ffmpeg_proc.stdout.close()
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dovi_proc.communicate()
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json_out = data_path(file_input, working_dir)
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if output_bin.exists():
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rpu_data_cmd = [str(dovi_tool_path), "info", "-f", "0", "-i", str(output_bin)]
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rpu_data_job = subprocess.run(rpu_data_cmd, check=True, capture_output=True)
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rpu_stdout_data = json.loads(
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rpu_data_job.stdout.decode().split("Parsing RPU file...")[1]
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)
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el_type = rpu_stdout_data.get("el_type")
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json_data = {"filename": file_input.name, "rpu_status": True, "EL": el_type}
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with open(json_out, "w") as json_file:
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json.dump(json_data, json_file)
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output_bin.unlink()
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return el_type
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json_data = {"filename": file_input.name, "rpu_status": False, "EL": None}
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with open(json_out, "w") as json_file:
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json.dump(json_data, json_file)
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return None
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def create_fel(
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file_input: Path, working_dir: Path, ffmpeg_path: Path, dovi_tool_path: Path
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) -> str:
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data = load_existing_data(file_input, working_dir) or {}
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el_path = data.get("EL_path")
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if el_path:
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return el_path
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el_output_path = (
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working_dir / file_input.with_name(f"{file_input.stem}_el.hevc").name
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)
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el_mkv_output_path = el_output_path.with_suffix(".mkv")
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ffmpeg_command = [
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str(ffmpeg_path),
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"-i",
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str(file_input),
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"-map",
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"0:v:0",
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"-c:v:0",
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"copy",
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"-bsf:v",
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"hevc_mp4toannexb",
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"-f",
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"hevc",
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"-",
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"-hide_banner",
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"-v",
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"panic",
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"-stats",
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]
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dovi_tool_command = [
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str(dovi_tool_path),
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"demux",
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"--el-only",
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"-",
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"-e",
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str(el_output_path),
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]
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with subprocess.Popen(
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ffmpeg_command, stdout=subprocess.PIPE, cwd=file_input.parent
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) as ffmpeg_proc:
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with subprocess.Popen(
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dovi_tool_command, stdin=ffmpeg_proc.stdout, cwd=file_input.parent
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) as dovi_proc:
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ffmpeg_proc.stdout.close()
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dovi_proc.communicate()
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ffmpeg_mux_command = [
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str(ffmpeg_path),
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"-y",
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"-i",
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str(el_output_path),
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"-c",
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"copy",
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"-f",
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"hevc",
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str(el_mkv_output_path),
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]
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subprocess.run(ffmpeg_mux_command)
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data["EL_path"] = str(el_mkv_output_path)
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with open(data_path(file_input, working_dir), "w") as json_file:
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json.dump(data, json_file)
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return el_mkv_output_path
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if __name__ == "__main__":
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file_input, ffmpeg, dovi_tool, prompt, create_fel_mkv, working_dir = (
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parse_arguments()
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)
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working_dir.mkdir(exist_ok=True, parents=True)
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if detect_el_layer(file_input):
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existing_data = load_existing_data(file_input, working_dir)
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if existing_data:
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el_type = existing_data.get("EL")
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if el_type:
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if el_type != "FEL" and create_fel_mkv:
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exit_print("EL layer is not FEL, select a different template", 1)
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print(f"Data loaded, EL type: {el_type}")
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if el_type == "FEL":
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if prompt:
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exit_print(
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"You are required to use a FEL template to process this file",
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1,
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)
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if create_fel_mkv:
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created_fel = create_fel(
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file_input, working_dir, ffmpeg, dovi_tool
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)
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exit_print(f"FEL layer: {created_fel}", 0)
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else:
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rpu = read_rpu(file_input, ffmpeg, dovi_tool, working_dir)
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if rpu:
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if rpu != "FEL" and create_fel_mkv:
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exit_print("EL layer is not FEL, select a different template", 1)
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if rpu == "MEL":
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exit_print("EL layer is MEL, no processing needed", 0)
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elif rpu == "FEL":
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if prompt:
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exit_print(
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"You are required to use a FEL template to process this file",
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1,
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)
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if create_fel_mkv:
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created_fel = create_fel(
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file_input, working_dir, ffmpeg, dovi_tool
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)
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exit_print(f"FEL layer: {created_fel}", 0)
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else:
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exit_print("No RPU data extracted", 1)
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else:
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exit_print("No EL layer detected", 0)
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