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Changelog

We are operating with semantic versioning.

v9.2.0

Features:

  • Update binary wheels to enable libvpx support.
  • Add an io_open argument to av.open for multi-file custom I/O.
  • Add support for AV_FRAME_DATA_SEI_UNREGISTERED (:issue:`723`).
  • Ship .pxd files to allow other libraries to cimport av (:issue:`716`).

Fixes:

  • Fix an ImportError when using Python 3.8/3.9 via Conda (:issue:`952`).
  • Fix a muxing memory leak which was introduced in v9.1.0 (:issue:`959`).

v9.1.1

Fixes:

  • Update binary wheels to update dependencies on Windows, disable ALSA on Linux.

v9.1.0

Features:

  • Add VideoFrame ndarray operations for rgb48be, rgb48le, rgb64be, rgb64le pixel formats.
  • Add VideoFrame ndarray operations for gray16be, gray16le pixel formats (:issue:`674`).
  • Make it possible to use av.open() on a pipe (:issue:`738`).
  • Use the "ASS without timings" format when decoding subtitles.

Fixes:

  • Update binary wheels to fix security vulnerabilities (:issue:`921`) and enable ALSA on Linux (:issue:`941`).
  • Fix crash when closing an output container an encountering an I/O error (:issue:`613`).
  • Fix crash when probing corrupt raw format files (:issue:`590`).
  • Fix crash when manipulating streams with an unknown codec (:issue:`689`).
  • Remove obsolete KEEP_SIDE_DATA and MP4A_LATM flags which are gone in FFmpeg 5.0.
  • Deprecate to_bytes() method of Packet, Plane and SideData, use bytes(packet) instead.

v9.0.2

Minor:

  • Update FFmpeg to 4.4.1 for the binary wheels.
  • Fix framerate when writing video with FFmpeg 4.4 (:issue:`876`).

v9.0.1

Minor:

  • Update binary wheels to fix security vulnerabilities (:issue:`901`).

v9.0.0

Major:

  • Re-implement AudioResampler with aformat and buffersink (:issue:`761`). AudioResampler.resample() now returns a list of frames.
  • Remove deprecated methods: AudioFrame.to_nd_array, VideoFrame.to_nd_array and Stream.seek.

Minor:

  • Provide binary wheels for macOS/arm64 and Linux/aarch64.
  • Simplify setup.py, require Cython.
  • Update the installation instructions in favor of PyPI.
  • Fix VideoFrame.to_image with height & width (:issue:`878`).
  • Fix setting Stream time_base (:issue:`784`).
  • Replace deprecated av_init_packet with av_packet_alloc (:issue:`872`).
  • Validate pixel format in VideoCodecContext.pix_fmt setter (:issue:`815`).
  • Fix AudioFrame ndarray conversion endianness (:issue:`833`).
  • Improve time_base support with filters (:issue:`765`).
  • Allow flushing filters by sending None (:issue:`886`).
  • Avoid unnecessary vsnprintf() calls in log_callback() (:issue:`877`).
  • Make Frame.from_ndarray raise ValueError instead of AssertionError.

v8.1.0

Minor:

  • Update FFmpeg to 4.3.2 for the binary wheels.
  • Provide binary wheels for Python 3.10 (:issue:`820`).
  • Stop providing binary wheels for end-of-life Python 3.6.
  • Fix args order in Frame.__repr__ (:issue:`749`).
  • Fix documentation to remove unavailable QUIET log level (:issue:`719`).
  • Expose codec_context.codec_tag (:issue:`741`).
  • Add example for encoding with a custom PTS (:issue:`725`).
  • Use av_packet_rescale_ts in Packet._rebase_time() (:issue:`737`).
  • Do not hardcode errno values in test suite (:issue:`729`).
  • Use av_guess_format for output container format (:issue:`691`).
  • Fix setting CodecContext.extradata (:issue:`658`, :issue:`740`).
  • Fix documentation code block indentation (:issue:`783`).
  • Fix link to Conda installation instructions (:issue:`782`).
  • Export AudioStream from av.audio (:issue:`775`).
  • Fix setting CodecContext.extradata (:issue:`801`).

v8.0.3

Minor:

  • Update FFmpeg to 4.3.1 for the binary wheels.

v8.0.2

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.

v8.0.1

Minor:

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

v8.0.0

Major:

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

Minor:

Fixes:

v7.0.1

Fixes:

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

v7.0.0

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:

Fixes:

v6.2.0

Major:

Minor:

Build:

  • Do not install the scratchpad package.

v6.1.2

Micro:

v6.1.1

Micro:

Build:

  • Fix more compiler warnings.

v6.1.0

Minor:

  • av.datasets for sample data that is pulled from either FFmpeg's FATE suite, or our documentation server.
  • :meth:`.InputContainer.seek` gets a stream argument to specify the time_base the requested offset is in.

Micro:

  • Avoid infinite look in Stream.__getattr__. (:issue:`450`)
  • Correctly handle Python I/O with no seek method.
  • Remove Datastream.seek override (:issue:`299`)

Build:

  • Assert building against compatible FFmpeg. (:issue:`401`)
  • Lock down Cython lanaguage level to avoid build warnings. (:issue:`443`)

Other:

  • Incremental improvements to docs and tests.
  • Examples directory will now always be runnable as-is, and embeded in the docs (in a copy-pastable form).

v6.0.0

Major:

  • Drop support for FFmpeg < 3.2.
  • Remove VideoFrame.to_qimage method, as it is too tied to PyQt4. (:issue:`424`)

Minor:

Micro:

Build:

  • Remove the "reflection" mechanism, and rely on FFmpeg version we build against to decide which methods to call. (:issue:`416`)
  • Fix many more const warnings.

v0.x.y

Note

Below here we used v0.x.y.

We incremented x to signal a major change (i.e. backwards incompatibilities) and incremented y as a minor change (i.e. backwards compatible features).

Once we wanted more subtlety and felt we had matured enough, we jumped past the implications of v1.0.0 straight to v6.0.0 (as if we had not been stuck in v0.x.y all along).

v0.5.3

Minor:

Patch:

Runtime:

Build:

Docs:

v0.5.2

Build:

  • Fixed Windows build, which broke in v0.5.1.
  • Compiler checks are not cached by default. This behaviour is retained if you source scripts/activate.sh to develop PyAV. (:issue:`256`)
  • Changed to PYAV_SETUP_REFLECT_DEBUG=1 from PYAV_DEBUG_BUILD=1.

v0.5.1

Build:

  • Set PYAV_DEBUG_BUILD=1 to force a verbose reflection (mainly for being installed via pip, which is why this is worth a release).

v0.5.0

Major:

  • Dropped support for Libav in general. (:issue:`110`)
  • No longer uses libavresample.

Minor:

  • av.open has container_options and stream_options.
  • Frame includes pts in repr.

Patch:

  • EnumItem's hash calculation no longer overflows. (:issue:`339`, :issue:`341` and :issue:`342`.)
  • Frame.time_base was not being set in most cases during decoding. (:issue:`364`)
  • CodecContext.options no longer needs to be manually initialized.
  • CodexContext.thread_type accepts its enums.

v0.4.1

Minor:

Patch:

v0.4.0

Major:

  • CodecContext has taken over encoding/decoding, and can work in isolation of streams/containers.
  • Stream.encode returns a list of packets, instead of a single packet.
  • AudioFifo and AudioResampler will raise ValueError if input frames inconsistant pts.
  • time_base use has been revisited across the codebase, and may not be converted bettween Stream.time_base and CodecContext.time_base at the same times in the transcoding pipeline.
  • CodecContext.rate has been removed, but proxied to VideoCodecContext.framerate and AudioCodecContext.sample_rate. The definition is effectively inverted from the old one (i.e. for 24fps it used to be 1/24 and is now 24/1).
  • Fractions (e.g. time_base, rate) will be None if they are invalid.
  • InputContainer.seek and Stream.seek will raise TypeError if given a float, when previously they converted it from seconds.

Minor:

  • Added Packet.is_keyframe and Packet.is_corrupt. (:issue:`226`)
  • Many more time_base, pts and other attributes are writeable.
  • Option exposes much more of the API (but not get/set). (:issue:`243`)
  • Expose metadata encoding controls. (:issue:`250`)
  • Expose CodecContext.skip_frame. (:issue:`259`)

Patch:

  • Build doesn't fail if you don't have git installed. (:issue:`184`)
  • Developer environment works better with Python3. (:issue:`248`)
  • Fix Container deallocation resulting in segfaults. (:issue:`253`)

v0.3.3

Patch:

  • Fix segfault due to buffer overflow in handling of stream options. (:issue:`163` and :issue:`169`)
  • Fix segfault due to seek not properly checking if codecs were open before using avcodec_flush_buffers. (:issue:`201`)

v0.3.2

Minor:

  • Expose basics of avfilter via Filter.
  • Add Packet.time_base.
  • Add AudioFrame.to_nd_array to match same on VideoFrame.
  • Update Windows build process.

Patch:

  • Further improvements to the logging system. (:issue:`128`)

v0.3.1

Minor:

  • av.logging.set_log_after_shutdown renamed to set_print_after_shutdown
  • Repeating log messages will be skipped, much like ffmpeg's does by default

Patch:

v0.3.0

Major:

  • Python IO can write
  • Improve build system to use Python's C compiler for function detection; build system is much more robust
  • MSVC support. (:issue:`115` by :gh-user:`vidartf`)
  • Continuous integration on Windows via AppVeyor. (by :gh-user:`vidartf`)

Minor:

  • Add Packet.decode_one() to skip packet flushing for codecs that would otherwise error
  • StreamContainer for easier selection of streams
  • Add buffer protocol support to Packet

Patch:

Known Issues:

  • VideoFrame is suspected to leak memory in narrow cases on Linux. (:issue:`128`)

v0.2.4

  • fix library search path for current Libav/Ubuntu 14.04. (:issue:`97`)
  • explicitly include all sources to combat 0.2.3 release problem. (:issue:`100`)

v0.2.3

Warning

There was an issue with the PyPI distribution in which it required Cython to be installed.

Major:

  • Python IO.
  • Agressively releases GIL
  • Add experimental Windows build. (:issue:`84`)

Minor:

  • Several new Stream/Packet/Frame attributes

Patch:

v0.2.2

  • Cythonization in setup.py; mostly a development issue.
  • Fix for av.InputContainer.size over 2**31.

v0.2.1

  • Python 3 compatibility!
  • Build process fails if missing libraries.
  • Fix linking of libavdevices.

v0.2.0

Warning

This version has an issue linking in libavdevices, and very likely will not work for you.

It sure has been a long time since this was released, and there was a lot of arbitrary changes that come with us wrapping an API as we are discovering it. Changes include, but are not limited to:

  • Audio encoding.
  • Exposing planes and buffers.
  • Descriptors for channel layouts, video and audio formats, etc..
  • Seeking.
  • Many many more properties on all of the objects.
  • Device support (e.g. webcams).

v0.1.0

  • FIRST PUBLIC RELEASE!
  • Container/video/audio formats.
  • Audio layouts.
  • Decoding video/audio/subtitles.
  • Encoding video.
  • Audio FIFOs and resampling.