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802f6406ae
* refactor(lib): change how manim API is imported * chore(lib): delete old files * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * wip: moving all commands * adding animations * fix tests * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * fix mypy * fixes * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * trying to fix docs * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * wip: docs * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * make it work * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * wip test * tests are working * improving docs * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * fix index * docs: nicer shift * docs: nicer quickstart example * fix tests * change tests * move coverage to test workflow * fix(tests): remove resolve * strict resolve * change local path test * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * documented changes * cleanup docs * cleanup files * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * fix(ci): set type --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
79 lines
2.2 KiB
Python
79 lines
2.2 KiB
Python
import hashlib
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import subprocess
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import tempfile
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from pathlib import Path
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from typing import List
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from .logger import logger
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def concatenate_video_files(ffmpeg_bin: Path, files: List[Path], dest: Path) -> None:
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"""Concatenate multiple video files into one."""
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f = tempfile.NamedTemporaryFile(mode="w", delete=False)
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f.writelines(f"file '{path.absolute()}'\n" for path in files)
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f.close()
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command: List[str] = [
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str(ffmpeg_bin),
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"-f",
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"concat",
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"-safe",
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"0",
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"-i",
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f.name,
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"-c",
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"copy",
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str(dest),
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"-y",
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]
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logger.debug(" ".join(command))
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process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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output, error = process.communicate()
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if output:
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logger.debug(output.decode())
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if error:
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logger.debug(error.decode())
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if not dest.exists():
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raise ValueError(
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"could not properly concatenate files, use `-v DEBUG` for more details"
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)
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def merge_basenames(files: List[Path]) -> Path:
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"""Merge multiple filenames by concatenating basenames."""
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if len(files) == 0:
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raise ValueError("Cannot merge an empty list of files!")
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dirname: Path = files[0].parent
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ext = files[0].suffix
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basenames = list(file.stem for file in files)
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basenames_str = ",".join(f"{len(b)}:{b}" for b in basenames)
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# We use hashes to prevent too-long filenames, see issue #123:
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# https://github.com/jeertmans/manim-slides/issues/123
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basename = hashlib.sha256(basenames_str.encode()).hexdigest()
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logger.debug(f"Generated a new basename for basenames: {basenames} -> '{basename}'")
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return dirname.joinpath(basename + ext)
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def reverse_video_file(ffmpeg_bin: Path, src: Path, dst: Path) -> None:
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"""Reverses a video file, writting the result to `dst`."""
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command = [str(ffmpeg_bin), "-y", "-i", str(src), "-vf", "reverse", str(dst)]
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logger.debug(" ".join(command))
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process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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output, error = process.communicate()
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if output:
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logger.debug(output.decode())
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if error:
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logger.debug(error.decode())
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