mirror of
https://github.com/master-of-zen/Av1an.git
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61 lines
1.7 KiB
Python
61 lines
1.7 KiB
Python
import re
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from subprocess import PIPE
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from pathlib import Path
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from shlex import split
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from subprocess import run, Popen
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VS_EXTENSIONS = [".vpy", ".py"]
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def is_vapoursynth(path: Path):
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return path.suffix in VS_EXTENSIONS
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def frame_probe_vspipe(source: Path):
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"""
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Get frame count from vspipe.
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:param: source: Path to input vapoursynth (vpy/py) file
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"""
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cmd = ["vspipe", "-i", source.as_posix(), "-"]
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r = run(cmd, capture_output=True)
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matches = re.findall(
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r"Frames:\s*([0-9]+)\s", r.stderr.decode("utf-8") + r.stdout.decode("utf-8")
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)
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frames = int(matches[-1])
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return frames
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def create_vs_file(temp: Path, source, chunk_method):
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"""
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Creates vs pipe file or returns file if it exists
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"""
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load_script = temp / "split" / "loadscript.vpy"
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if load_script.exists():
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return load_script
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if chunk_method == "vs_ffms2":
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cache_file = (temp / "split" / "cache.ffindex").resolve()
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script = (
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"from vapoursynth import core\n"
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'core.ffms2.Source(r"{}", cachefile="{}").set_output()'
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)
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else:
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cache_file = (temp / "split" / "cache.lwi").resolve().as_posix()
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script = (
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"from vapoursynth import core\n"
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'core.lsmas.LWLibavSource(r"{}", cachefile="{}").set_output()'
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)
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with open(load_script, "w+", encoding='utf-8') as file:
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file.write(script.format(Path(source).resolve(), cache_file))
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cache_generation = f"vspipe -i {load_script.as_posix()} -i -"
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d = Popen(split(cache_generation), stdout=PIPE, stderr=PIPE).wait()
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return load_script
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def compose_vapoursynth_pipe(source: Path, fifo: Path = None):
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return ["vspipe", "-y", source.as_posix(), fifo.as_posix() if fifo else "-"]
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