Add Avisynth video encoding workflow
This commit is contained in:
ajp_anton
@@ -0,0 +1,412 @@
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from __future__ import annotations
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import os
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import sys
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from dataclasses import dataclass
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from datetime import timezone
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from pathlib import Path
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from tools.avisynth_runner import (
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AvisynthRunnerSet,
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runner_set_from_env_or_bundled,
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validate_runner_path,
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)
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from tools.console import prompt_input, prompt_yes_no
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from tools.timezones import local_timezone, parse_timezone_offset, timezone_to_string
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from tools.video_encode_output import (
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ENCODER_PRESETS,
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AudioEncodeOptions,
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VideoCodecOptions,
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default_audio_bitrate,
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)
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@dataclass(frozen=True)
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class OutputNamingOptions:
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use_timestamps: bool
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timezone_value: timezone
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def ask_ffms2_plugin_path() -> Path | None:
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env_path = os.environ.get("MBT_FFMS2_PLUGIN", "").strip()
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if env_path:
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return _validate_plugin_path(env_path)
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if not sys.stdin.isatty() or not _env_truthy("MBT_ASK_FFMS2_PLUGIN"):
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return None
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answer = prompt_input(
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"\nFFMS2 plugin path for Avisynth LoadPlugin "
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"(blank = use Avisynth autoload): "
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).strip()
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if not answer:
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return None
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return _validate_plugin_path(answer)
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def _env_truthy(name: str) -> bool:
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return os.environ.get(name, "").strip().lower() in {"1", "true", "yes", "y", "on"}
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def _validate_plugin_path(raw_path: str) -> Path:
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plugin_path = Path(raw_path.strip().strip('"')).expanduser()
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if not plugin_path.is_file():
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raise RuntimeError(f"FFMS2 plugin file not found: {plugin_path}")
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return plugin_path.resolve()
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def ask_avisynth_runners() -> AvisynthRunnerSet | None:
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runners = runner_set_from_env_or_bundled()
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if runners is not None:
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return runners
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if not sys.stdin.isatty():
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return None
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print(
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"\nAviSynth runner is needed for validation and encoding.\n"
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"Use media-batch-tools' mbt_avs_runner executable. The script first "
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"looks for the bundled runner automatically. On Windows, the default is "
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"64-bit mbt_avs_runner.exe; 32-bit scripts can use "
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"mbt_avs_runner32.exe via a trailing #32bit marker. If you leave this "
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"blank, the workspace and editable .avs files are created, but "
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"validation and encoding stop."
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)
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answer = prompt_input(
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"AviSynth runner executable path (blank = create workspace only): "
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).strip()
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if not answer:
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return None
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runner = validate_runner_path(answer)
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return AvisynthRunnerSet(default=runner, runner64=runner)
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def require_avisynth_runners_for_encode() -> AvisynthRunnerSet:
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runners = runner_set_from_env_or_bundled()
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if runners is not None:
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return runners
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if not sys.stdin.isatty():
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raise RuntimeError(
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"Build tools/avisynth_runner/mbt_avs_runner on Linux, provide "
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"tools/avisynth_runner/mbt_avs_runner.exe on Windows, or set "
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"MBT_AVS_RUNNER before enabling video encode. For 32-bit Windows "
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"AviSynth, set MBT_AVS_RUNNER32."
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)
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print(
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"\nEncoding needs media-batch-tools' AviSynth runner executable "
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"(mbt_avs_runner or mbt_avs_runner.exe)."
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)
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answer = prompt_input("AviSynth runner executable path: ").strip()
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if not answer:
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raise RuntimeError("Avisynth runner path is required for encoding.")
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runner = validate_runner_path(answer)
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return AvisynthRunnerSet(default=runner, runner64=runner)
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def ask_encode_video_only() -> bool:
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env_value = os.environ.get("MBT_ENCODE_VIDEO")
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if env_value is not None:
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return env_value.strip().lower() in {"1", "true", "yes", "y", "on"}
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if not sys.stdin.isatty():
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return False
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return prompt_yes_no("Encode validated outputs now?", default=False)
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def ask_output_naming_options(
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*,
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default_timezone: timezone | None = None,
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) -> OutputNamingOptions:
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env_value = os.environ.get("MBT_VIDEO_TIMESTAMP_NAMES")
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if env_value is not None:
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use_timestamps = env_value.strip().lower() in {"1", "true", "yes", "y", "on"}
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elif sys.stdin.isatty():
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use_timestamps = prompt_yes_no(
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"Name encoded files from their edited beginning timestamp?",
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default=True,
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)
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else:
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use_timestamps = False
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default_timezone = default_timezone or local_timezone()
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env_timezone = os.environ.get("MBT_VIDEO_TIMEZONE", "").strip()
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if not use_timestamps:
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timezone_value = default_timezone
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elif env_timezone:
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try:
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timezone_value = parse_timezone_offset(env_timezone)
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except ValueError as exc:
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raise RuntimeError(f"Invalid MBT_VIDEO_TIMEZONE: {exc}") from exc
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elif sys.stdin.isatty():
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while True:
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answer = prompt_input(
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"Output filename timezone "
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f"[{timezone_to_string(default_timezone)}]: "
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).strip()
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if not answer:
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timezone_value = default_timezone
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break
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try:
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timezone_value = parse_timezone_offset(answer)
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break
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except ValueError as exc:
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print(exc)
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else:
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timezone_value = default_timezone
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return OutputNamingOptions(
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use_timestamps=use_timestamps,
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timezone_value=timezone_value,
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)
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def ask_video_codec_options() -> VideoCodecOptions:
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codec = _codec_from_env()
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extension = _container_extension_from_env()
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crf = _int_from_env("MBT_VIDEO_CRF")
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preset = os.environ.get("MBT_VIDEO_PRESET", "").strip()
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profile = _optional_env("MBT_VIDEO_PROFILE")
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level = _optional_env("MBT_VIDEO_LEVEL")
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threads = _threads_from_env()
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if sys.stdin.isatty():
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if extension is None:
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extension = _prompt_container_extension()
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if codec is None:
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codec = _prompt_codec()
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if crf is None:
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default_crf = 16 if codec == "libx264" else 21
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crf = _prompt_int(f"CRF [{default_crf}]: ", default=default_crf)
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if not preset:
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preset = _prompt_preset(default="slow")
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if "MBT_VIDEO_THREADS" not in os.environ:
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threads = _prompt_threads(default=None)
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else:
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extension = extension or ".mp4"
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codec = codec or "libx265"
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crf = crf if crf is not None else (16 if codec == "libx264" else 21)
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preset = preset or "slow"
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return VideoCodecOptions(
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codec=codec,
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crf=crf,
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preset=preset,
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extension=extension,
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profile=profile,
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level=level,
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threads=threads,
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)
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def _prompt_preset(*, default: str) -> str:
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options = "/".join(ENCODER_PRESETS)
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while True:
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value = prompt_input(f"Encoder preset [{default}] ({options}): ").strip().lower()
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if not value:
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return default
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if value in ENCODER_PRESETS:
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return value
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print(f"Preset must be one of: {options}.")
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def _threads_from_env() -> int | None:
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raw = os.environ.get("MBT_VIDEO_THREADS", "").strip().lower()
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if not raw or raw == "auto":
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return None
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try:
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value = int(raw)
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except ValueError as exc:
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raise RuntimeError("MBT_VIDEO_THREADS must be auto or a positive integer") from exc
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if value < 1:
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raise RuntimeError("MBT_VIDEO_THREADS must be auto or a positive integer")
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return value
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def _prompt_threads(*, default: int | None) -> int | None:
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default_text = str(default) if default is not None else "auto"
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while True:
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value = prompt_input(f"Encoder threads [{default_text}] (auto or positive integer): ").strip().lower()
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if not value or value == "auto":
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return default
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try:
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threads = int(value)
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except ValueError:
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print("Threads must be auto or a positive integer.")
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continue
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if threads >= 1:
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return threads
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print("Threads must be auto or a positive integer.")
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def ask_audio_options(
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*,
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has_speed_changes: bool,
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container_extension: str,
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) -> AudioEncodeOptions:
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env_mode = os.environ.get("MBT_VIDEO_AUDIO", "").strip().lower()
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env_bitrate = os.environ.get("MBT_VIDEO_AUDIO_BITRATE", "").strip()
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preserve_pitch = ask_audio_pitch_option(has_speed_changes=has_speed_changes)
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if env_mode:
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mode = _normalize_audio_mode(env_mode)
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_validate_audio_container(mode, container_extension)
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return AudioEncodeOptions(
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mode=mode,
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bitrate=env_bitrate or default_audio_bitrate(mode),
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preserve_pitch=preserve_pitch,
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)
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if not sys.stdin.isatty():
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return AudioEncodeOptions(mode="none", preserve_pitch=preserve_pitch)
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while True:
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if container_extension == ".mkv":
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prompt = "Audio: Enter=Opus, a=AAC, f=FLAC, c=copy/trim audio, n=no audio: "
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else:
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prompt = "Audio: Enter=AAC re-encode, c=copy/trim audio, n=no audio: "
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answer = prompt_input(prompt).strip().lower()
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if not answer:
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mode = "opus" if container_extension == ".mkv" else "aac"
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break
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if answer in {"a", "aac"}:
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mode = "aac"
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break
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if container_extension == ".mkv" and answer in {"o", "opus"}:
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mode = "opus"
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break
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if container_extension == ".mkv" and answer in {"f", "flac"}:
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mode = "flac"
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break
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if answer in {"c", "copy"}:
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mode = "copy"
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break
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if answer in {"n", "no", "none"}:
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mode = "none"
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break
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print("Please choose Enter, c, or n.")
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bitrate = default_audio_bitrate(mode)
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if mode in {"aac", "opus"}:
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label = "AAC" if mode == "aac" else "Opus"
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bitrate = prompt_input(f"{label} audio bitrate [{bitrate}]: ").strip() or bitrate
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return AudioEncodeOptions(mode=mode, bitrate=bitrate, preserve_pitch=preserve_pitch)
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def ask_audio_pitch_option(*, has_speed_changes: bool) -> bool:
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env_value = os.environ.get("MBT_VIDEO_AUDIO_PITCH", "").strip().lower()
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if env_value:
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if env_value in {"preserve", "preserved", "keep", "same"}:
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return True
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if env_value in {"shift", "change", "changed", "speed"}:
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return False
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raise RuntimeError("MBT_VIDEO_AUDIO_PITCH must be preserve or shift")
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if not has_speed_changes or not sys.stdin.isatty():
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return True
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while True:
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answer = prompt_input(
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"Speed-changed audio pitch: Enter=preserve pitch, s=shift with speed: "
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).strip().lower()
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if not answer or answer in {"p", "preserve", "keep", "same"}:
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return True
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if answer in {"s", "shift", "change", "speed"}:
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return False
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print("Please choose Enter or s.")
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def _normalize_audio_mode(value: str) -> str:
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if value in {"aac", "reencode", "re-encode"}:
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return "aac"
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if value in {"opus", "libopus"}:
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return "opus"
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if value in {"flac", "lossless"}:
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return "flac"
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if value in {"copy", "streamcopy", "stream-copy"}:
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return "copy"
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if value in {"none", "no", "off", "0"}:
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return "none"
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raise RuntimeError("MBT_VIDEO_AUDIO must be aac, opus, flac, copy, or none")
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def _validate_audio_container(mode: str, container_extension: str) -> None:
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if container_extension == ".mp4" and mode in {"opus", "flac"}:
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raise RuntimeError("MP4 output supports aac, copy, or none audio in this tool")
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def _container_extension_from_env() -> str | None:
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raw = os.environ.get("MBT_VIDEO_CONTAINER", "").strip().lower()
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if not raw:
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return None
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return _normalize_container_extension(raw)
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def _prompt_container_extension() -> str:
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while True:
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answer = prompt_input("Output container: Enter=MP4, m=MKV: ").strip().lower()
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if not answer:
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return ".mp4"
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try:
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return _normalize_container_extension(answer)
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except ValueError as exc:
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print(exc)
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def _normalize_container_extension(value: str) -> str:
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if value in {"mp4", ".mp4"}:
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return ".mp4"
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if value in {"m", "mkv", ".mkv", "matroska"}:
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return ".mkv"
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raise ValueError("container must be mp4 or mkv")
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def _codec_from_env() -> str | None:
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raw = os.environ.get("MBT_VIDEO_CODEC", "").strip().lower()
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if not raw:
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return None
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return _normalize_codec(raw)
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def _prompt_codec() -> str:
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while True:
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answer = prompt_input("Video codec: x264, Enter=x265: ").strip().lower()
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if not answer:
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return "libx265"
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try:
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return _normalize_codec(answer)
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except ValueError as exc:
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print(exc)
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def _normalize_codec(value: str) -> str:
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if value in {"x264", "h264", "libx264"}:
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return "libx264"
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if value in {"x265", "h265", "hevc", "libx265"}:
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return "libx265"
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raise ValueError("codec must be x264 or x265")
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def _int_from_env(name: str) -> int | None:
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raw = os.environ.get(name, "").strip()
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if not raw:
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return None
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try:
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return int(raw)
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except ValueError as exc:
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raise RuntimeError(f"{name} must be an integer") from exc
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def _optional_env(name: str) -> str | None:
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value = os.environ.get(name, "").strip()
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return value or None
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def _prompt_int(prompt: str, *, default: int) -> int:
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while True:
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answer = prompt_input(prompt).strip()
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if not answer:
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return default
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try:
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return int(answer)
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except ValueError:
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print("Please enter an integer.")
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Block a user