Pyav

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Minor:

- Enable GnuTLS support in the FFmpeg build used for binary wheels (:issue:`675`).
- Make binary wheels compatible with Mac OS X 10.9+ (:issue:`662`).
- Drop Python 2.x buffer protocol code.
- Remove references to previous repository location.

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Minor:

- Enable additional FFmpeg features in the binary wheels.
- Use os.fsencode for both input and output file names (:issue:`600`).

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Major:

- Drop support for Python 2 and Python 3.4.
- Provide binary wheels for Linux, Mac and Windows.

Minor:

- Remove shims for obsolete FFmpeg versions (:issue:`588`).
- Add yuvj420p format for :meth:`VideoFrame.from_ndarray` and :meth:`VideoFrame.to_ndarray` (:issue:`583`).
- Add support for palette formats in :meth:`VideoFrame.from_ndarray` and :meth:`VideoFrame.to_ndarray` (:issue:`601`).
- Fix Python 3.8 deprecation warning related to abstract base classes (:issue:`616`).
- Remove ICC profiles from logos (:issue:`622`).

Fixes:

- Avoid infinite timeout in :func:`av.open` (:issue:`589`).

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Fixes:

- Removed deprecated ``AV_FRAME_DATA_QP_TABLE_*`` enums. (:issue:`607`)

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Major:

- Drop support for FFmpeg < 4.0. (:issue:`559`)
- Introduce per-error exceptions, and mirror the builtin exception hierarchy. It is recommended to examine your error handling code, as common FFmpeg errors will result in `ValueError` baseclasses now. (:issue:`563`)
- Data stream's `encode` and `decode` return empty lists instead of none allowing common API use patterns with data streams.
- Remove ``whence`` parameter from :meth:`InputContainer.seek` as non-time seeking doesn't seem to actually be supported by any FFmpeg formats.

Minor:

- Users can disable the logging system to avoid lockups in sub-interpreters. (:issue:`545`)
- Filters support audio in general, and a new :meth:`.Graph.add_abuffer`. (:issue:`562`)
- :func:`av.open` supports `timeout` parameters. (:issue:`480` and :issue:`316`)
- Expose :attr:`Stream.base_rate` and :attr:`Stream.guessed_rate`. (:issue:`564`)
- :meth:`.VideoFrame.reformat` can specify interpolation.
- Expose many sets of flags.

Fixes:

- Fix typing in :meth:`.CodecContext.parse` and make it more robust.
- Fix wrong attribute in ByteSource. (:issue:`340`)
- Remove exception that would break audio remuxing. (:issue:`537`)
- Log messages include last FFmpeg error log in more helpful way.
- Use AVCodecParameters so FFmpeg doesn't complain. (:issue:`222`)

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Major:

- Allow :meth:`av.open` to be used as a context manager.
- Fix compatibility with PyPy, the full test suite now passes. (:issue:`130`)

Minor:

- Add :meth:`.InputContainer.close` method. (:issue:`317`, :issue:`456`)
- Ensure audio output gets flushes when using a FIFO. (:issue:`511`)
- Make Python I/O buffer size configurable. (:issue:`512`)
- Make :class:`.AudioFrame` and :class:`VideoFrame` more garbage-collector friendly by breaking a reference cycle. (:issue:`517`)

Build:

- Do not install the `scratchpad` package.