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Changelog

We are operating with semantic versioning <http://semver.org/>. However, we are using v0.x.y as our heavy development period, and will increment x to signal a major change (i.e. backwards incompatibilities) and increment y as a minor change (i.e. backwards compatible features).

v0.4.0.dev0

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 transociding 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. (#226.)
  • Many more time_base, pts and other attributes are writeable.
  • Option exposes much more of the API (but not get/set). (#243).

Fixes:

  • Build doesn't fail if you don't have git installed. (#184.)

v0.3.3

Fixes:

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

Fixes:

  • Further improvements to the logging system, continued from #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

Fixes:

  • Fix memory leak in logging system when under heavy logging loads while threading (#128 with help from @mkassner and @ksze)

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 (#115 by @vidartf)
  • Continuous integration on Windows via AppVeyor (by @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

Fixes:

  • Fix bug when using Python IO on files larger than 2GB (#109 by @xxr3376)
  • Fix usage of changed Pillow API

Known Issues:

  • VideoFrame is suspected to leak memory in narrow cases on Linux (#128)

v0.2.4

  • fix library search path for current Libav/Ubuntu 14.04 (#97)
  • explicitly include all sources to combat 0.2.3 release problem (#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 (#84)

Minor:

  • Several new Stream/Packet/Frame attributes

Fixes:

  • Fix segfault in audio handling (#86 and #93)
  • Fix use of PIL/Pillow API (#85)
  • Fix bad assumptions about plane counts (#76)

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.