Remove ffmpeg_utils (#4050)

Author: samanklesaria

docs/source/build.ffmpeg.rst

@@ -148,8 +148,6 @@ Verify the installation by checking the version and CUDA device accessibility.
 
    print(torchaudio.__version__)
 
-   torchaudio.utils.ffmpeg_utils.get_build_config()
-
 .. code-block::
 
    2.0.0a0+2ead941

docs/source/build.jetson.rst

@@ -43,7 +43,6 @@ model implementations and application components.
    build.linux
    build.windows
    build.jetson
-   build.ffmpeg
 
 .. toctree::
    :maxdepth: 1

docs/source/index.rst

@@ -73,9 +73,6 @@ The following table summarizes the backends.
    * - 1
      - FFmpeg
      - Linux, macOS, Windows
-     - Use :py:func:`~torchaudio.utils.ffmpeg_utils.get_audio_decoders` and
-       :py:func:`~torchaudio.utils.ffmpeg_utils.get_audio_encoders`
-       to retrieve the supported codecs.
 
        This backend Supports various protocols, such as HTTPS and MP4, and file-like objects.
    * - 3

docs/source/torchaudio.rst

@@ -8,7 +8,7 @@ torchaudio.utils
 .. warning::
     Starting with version 2.8, we are refactoring TorchAudio to transition it
     into a maintenance phase. As a result:
-    - ``sox_utils`` and `ffmpeg_utils`` are deprecated in 2.8 and will be removed in 2.9.
+    - ``sox_utils`` are deprecated in 2.8 and will be removed in 2.9.
     - The decoding and encoding capabilities of PyTorch for both audio and video
       are being consolidated into TorchCodec.
     Please see https://github.com/pytorch/audio/issues/3902 for more information.
@@ -21,4 +21,3 @@ torchaudio.utils
    :template: autosummary/utils.rst
 
    sox_utils
-   ffmpeg_utils

docs/source/utils.rst

@@ -4,5 +4,4 @@
 
 
 __all__ = [
-    "ffmpeg_utils",
 ]

src/torchaudio/utils/__init__.py

@@ -13,7 +13,6 @@
 import torio
 from torch.testing._internal.common_utils import TestCase as PytorchTestCase
 from torchaudio._internal.module_utils import eval_env, is_module_available
-from torchaudio.utils.ffmpeg_utils import get_video_decoders, get_video_encoders
 
 
 class TempDirMixin:
@@ -245,7 +244,7 @@ def skipIfNoModule(module, display_name=None):
     key="ON_PYTHON_310",
 )
 skipIfNoAudioDevice = _skipIf(
-    not (_IS_FFMPEG_AVAILABLE and torchaudio.utils.ffmpeg_utils.get_output_devices()),
+    not _IS_FFMPEG_AVAILABLE,
     reason="No output audio device is available.",
     key="NO_AUDIO_OUT_DEVICE",
 )
@@ -263,16 +262,7 @@ def skipIfNoModule(module, display_name=None):
 
 def skipIfNoHWAccel(name):
     key = "NO_HW_ACCEL"
-    if not _IS_FFMPEG_AVAILABLE:
-        return _skipIf(True, reason="ffmpeg features are not available.", key=key)
-    if not torch.cuda.is_available():
-        return _skipIf(True, reason="CUDA is not available.", key=key)
-    if torchaudio._extension._check_cuda_version() is None:
-        return _skipIf(True, "Torchaudio is not compiled with CUDA.", key=key)
-    if name not in get_video_decoders() and name not in get_video_encoders():
-        return _skipIf(True, f"{name} is not in the list of available decoders or encoders", key=key)
-    return _pass
-
+    return _skipIf(True, reason="ffmpeg features are not available.", key=key)
 
 def zip_equal(*iterables):
     """With the regular Python `zip` function, if one iterable is longer than the other,