pyav 是如何调用 FFmpeg libraries 的？

Z时代
2024-02-07
分类：IT

我知道，python 脚本可以调用 c 的 .so 文件

有一个包：pyav，用于处理音视频的包

PyAV is a Pythonic binding for the FFmpeg libraries. We aim to provide all of the power and control of the underlying library, but manage the gritty details as much as possible.

根据 README.md 的说明，使用了 FFmpeg libraries

但是，我搜索 ~/.local/share/virtualenvs/svddb_testing-LBS8tSMB/lib/python3.10/site-packages 路径下的 so 文件，没有带 FFmpeg 字样的 so 文件

─➤ fd -u -e .so 1 ↵ PIL/_imaging.cpython-310-darwin.so PIL/_imagingcms.cpython-310-darwin.so PIL/_imagingft.cpython-310-darwin.so PIL/_imagingmath.cpython-310-darwin.so PIL/_imagingmorph.cpython-310-darwin.so PIL/_imagingtk.cpython-310-darwin.so PIL/_webp.cpython-310-darwin.so _cffi_backend.cpython-310-darwin.so av/_core.cpython-310-darwin.so av/audio/codeccontext.cpython-310-darwin.so av/audio/fifo.cpython-310-darwin.so av/audio/format.cpython-310-darwin.so av/audio/frame.cpython-310-darwin.so av/audio/layout.cpython-310-darwin.so av/audio/plane.cpython-310-darwin.so av/audio/resampler.cpython-310-darwin.so av/audio/stream.cpython-310-darwin.so av/buffer.cpython-310-darwin.so av/bytesource.cpython-310-darwin.so av/codec/codec.cpython-310-darwin.so av/codec/context.cpython-310-darwin.so av/container/core.cpython-310-darwin.so av/container/input.cpython-310-darwin.so av/container/output.cpython-310-darwin.so av/container/pyio.cpython-310-darwin.so av/container/streams.cpython-310-darwin.so av/data/stream.cpython-310-darwin.so av/descriptor.cpython-310-darwin.so av/dictionary.cpython-310-darwin.so av/enum.cpython-310-darwin.so av/error.cpython-310-darwin.so av/filter/context.cpython-310-darwin.so av/filter/filter.cpython-310-darwin.so av/filter/graph.cpython-310-darwin.so av/filter/link.cpython-310-darwin.so av/filter/pad.cpython-310-darwin.so av/format.cpython-310-darwin.so av/frame.cpython-310-darwin.so av/logging.cpython-310-darwin.so av/option.cpython-310-darwin.so av/packet.cpython-310-darwin.so av/plane.cpython-310-darwin.so av/sidedata/motionvectors.cpython-310-darwin.so av/sidedata/sidedata.cpython-310-darwin.so av/stream.cpython-310-darwin.so av/subtitles/codeccontext.cpython-310-darwin.so av/subtitles/stream.cpython-310-darwin.so av/subtitles/subtitle.cpython-310-darwin.so av/utils.cpython-310-darwin.so av/video/codeccontext.cpython-310-darwin.so av/video/format.cpython-310-darwin.so av/video/frame.cpython-310-darwin.so av/video/plane.cpython-310-darwin.so av/video/reformatter.cpython-310-darwin.so av/video/stream.cpython-310-darwin.so charset_normalizer/md.cpython-310-darwin.so charset_normalizer/md__mypyc.cpython-310-darwin.so cryptography/hazmat/bindings/_openssl.abi3.so cryptography/hazmat/bindings/_rust.abi3.so cv2/cv2.abi3.so numpy/core/_multiarray_tests.cpython-310-darwin.so numpy/core/_multiarray_umath.cpython-310-darwin.so numpy/core/_operand_flag_tests.cpython-310-darwin.so numpy/core/_rational_tests.cpython-310-darwin.so numpy/core/_simd.cpython-310-darwin.so numpy/core/_struct_ufunc_tests.cpython-310-darwin.so numpy/core/_umath_tests.cpython-310-darwin.so numpy/fft/_pocketfft_internal.cpython-310-darwin.so numpy/linalg/_umath_linalg.cpython-310-darwin.so numpy/linalg/lapack_lite.cpython-310-darwin.so numpy/random/_bounded_integers.cpython-310-darwin.so numpy/random/_common.cpython-310-darwin.so numpy/random/_generator.cpython-310-darwin.so numpy/random/_mt19937.cpython-310-darwin.so numpy/random/_pcg64.cpython-310-darwin.so numpy/random/_philox.cpython-310-darwin.so numpy/random/_sfc64.cpython-310-darwin.so numpy/random/bit_generator.cpython-310-darwin.so numpy/random/mtrand.cpython-310-darwin.so psutil/_psutil_osx.abi3.so psutil/_psutil_posix.abi3.so pydantic/__init__.cpython-310-darwin.so pydantic/_hypothesis_plugin.cpython-310-darwin.so pydantic/annotated_types.cpython-310-darwin.so pydantic/class_validators.cpython-310-darwin.so pydantic/color.cpython-310-darwin.so pydantic/config.cpython-310-darwin.so pydantic/dataclasses.cpython-310-darwin.so pydantic/datetime_parse.cpython-310-darwin.so pydantic/decorator.cpython-310-darwin.so pydantic/env_settings.cpython-310-darwin.so pydantic/error_wrappers.cpython-310-darwin.so pydantic/errors.cpython-310-darwin.so pydantic/fields.cpython-310-darwin.so pydantic/json.cpython-310-darwin.so pydantic/main.cpython-310-darwin.so pydantic/mypy.cpython-310-darwin.so pydantic/networks.cpython-310-darwin.so pydantic/parse.cpython-310-darwin.so pydantic/schema.cpython-310-darwin.so pydantic/tools.cpython-310-darwin.so pydantic/types.cpython-310-darwin.so pydantic/typing.cpython-310-darwin.so pydantic/utils.cpython-310-darwin.so pydantic/validators.cpython-310-darwin.so pydantic/version.cpython-310-darwin.so torch/_C.cpython-310-darwin.so torch/_C_flatbuffer.cpython-310-darwin.so torch/_dl.cpython-310-darwin.so torchvision/_C.so torchvision/image.so

yaml/_yaml.cpython-310-darwin.so

为什么呢？是因为 FFmpeg libraries 的 so 文件，不带 FFmpeg 字样？