v2.1.1

Changed

• Warn if HLS type is not set set to LIVE for UDP inputs (#347).
• Use new vp09 codec string for WebM by default (#406). Set command line flag:
  --use_legacy_vp9_codec_string if the old behavior is needed.
• Allow trailing null bytes in NAL units, to allow contents with the H264 spec
  violation to be processed instead of erroring out (#418).

Fixed

• Fix MPD@duration not set with MPDGenerator (#401). This is a regression
  introduced in v2.0.1.
• Remove 'wvtt' in HLS master playlist codec string as it breaks some old Apple
  products, e.g. AppleTV3 (#402).
• Fix potential text Segment Timeline not being grouped together in DASH mpd
  (#417), which happens when --allow_approximate_segment_timeline is set.

v2.1.0

Added

• Support Widevine and Playready PSSH generation internally in packager (#245).
  Documentation will be updated later.
• Support removing segments outside of live window in DASH and HLS (#223).
• Support UTCTiming for DASH (#311).
• Support approximate SegmentTimeline (#330) under flag
  --allow_approximate_segment_timeline. The flag is disabled by default and it
  will be enabled in a later release. SegmentTemplate with constant duration is also
  supported, under flag --segment_template_constant_duration.
• Support UDP Source Specific Multicast (SSM) (#332).
• Support elementary audio (Packed Audio) for HLS (#342).
• Support FLAC codec (#345).
• Support AAC with program_config_element (#387).
• Support Widevine entitlement license with dual PSSH, which can be enabled using flag
  --enable_entitlement_license flag. The feature is experimental. Packaged contents may
  not play on some client platforms.
• Add license notice in --licenses.

Changed

• Ignore unsupported audio codec in the source content (#395). This allows other
  supported streams to be processed and packaged.

Fixed

• Fix bitrate for DASH on-demand profile too (#376).
• Fix Ad Cues and EXT-X-KEY tag handling in HLS iFrames only playlist
  (#378, #396).
• Skip Style and Region Blocks in the source instead of failing (#380).
• Fix potential slice header size off by one byte in H265 (#383).
• Fix potential partial DASH segments during live packaging (#386).
• Fix incorrect BOM used in WEBVTT header (#397).
• Fix TS mimetype in DASH.

v2.0.3

Changed

• Removed --pto_adjustment flag (related to #368).

Fixed

• Use max bitrate in Representation@bandwidth instead of average bitrate for DASH live profile (#376).
• Set Widevine key request content-type to JSON instead of xml (#372).
• Fix default_language not working if 2-char code is used (#371).
• Do not force earliest_presentation_time to 0 for VOD (#303).
• Generate more precise time in Period@duration (#368). This avoids possible
  rounding error in MSE causing frames to be dropped at Period boundary.

v2.0.2

Added

• Support cue alignment from multiple demuxed streams (#355).

v2.0.1

Added

• Recognize m4s as a valid extension for init segment (#331). It is used to be
  allowed as the extension for media segments only.
• Improve DASH multi-period support: calculate presentationTimeOffset and
  Period@duration from video segment presentation timestamps. This avoids
  video playback jitters due to gaps.

Fixed

• Handle invalid WebVTT with start_time == end_time gracefully (#335).
• Ignore invalid meta box in mp4 files, which Android's camera app generates
  (#319).
• Set stream duration in init segment for mp4 with static live profile (#340).

v2.0.0

Added

• Enhanced HLS support.
  • Support for attributes RESOLUTION, CHANNELS, AUTOSELECT and DEFAULT.
  • Live and Event playlists.
  • fMP4 in HLS (including byte range support).
  • DRM: Widevine and Fairplay.
  • I-Frame playlist.
• Enhanced subtitle support.
  • Segmented WebVTT in fMP4.
  • Segmented WebVTT in text, for HLS.
• Support generating DASH + HLS manifests simultaneously (#262).
• AC3 / E-AC3 support.
• Experimental multi-period support.
• Raw key multi-key support.
• DASH Trickplay.
• Make fMP4 output CMAF compatible.
• Support for WebM colour element.
• Support skip_encryption stream descriptor fields (#219).
• Improved documentation and tutorials.

Changed

• Refactored packager code and media pipeline.
• Exposed top level packaging interface.
• Renamed --webm_subsample_encryption flag to --vp9_subsample_encryption flag.
• Deprecated --availability_time_offset flag.

Fixed

• Write manifests atomically to fix possible truncated manifests seen on clients
  (#186).
• [WebM] Fix live segmenter overflow if longer than two hours (#233).
• Fix a possible interferenace problem when re-using UDP multicast streams in
  different processes (#241).
• Create directories in the output path if not exist (#276).
• Fix order of H265 VPS, SPS, PPS in hvcC box (#297).
• Handle additional unused mdat properly (#298).
• Fix possible incorrect HEVC decoder configuration data (#312).
• Handle varying parameter sets in sample when converting from NAL unit stream
  to byte stream (#327).

v1.6.2

Added

• Added an option to keep parameter set NAL units (SPS/PPS for H264,
  SPS/PPS/VPS for H265), which is necessary if the parameter set NAL units
  are varying from frame to frame. The flag is --strip_parameter_set_nalus,
  which is true by default. This addresses #206 (the flag needs to be set to
  false).

Fixed

• Fixed the problem that sliding window logic is still active with DASH static
  live profile (#218).
• Fixed AAC-HE not correctly signaled in codec string (#225).
• [WebM] Fixed output truncated if using the same file for both input and
  output (#210).
• [WebM] Fixed possible integer overflow in stream duration in MPD manifest
  (#214).

v1.6.1

Changed

• Enable --generate_dash_if_iop_compliant_mpd by default. This moves
  ContentProtection element from Representation to AdaptationSet. The feature
  can still be disabled by setting the flag to false if needed.

Fixed

• MPD duration not set for live profile with static mpd (#201).

v1.6.0

Added

• Added support for Windows (both 32-bit and 64-bit are supported).
• Added support for live profile with static mpd by setting flag
  --generate_static_mpd (#142). This allows on demand content to use segment
  template.
• Added support for tagging a specific audio AdaptationSet as the default /
  main AdaptationSet with --default_language flag (#155).
• Added UDP options support: udp://ip:port[?options]. Currently three options
  are supported: reuse=1|0 whether reusing UDP sockets are allowed (#133),
  interface=a.b.c.d interface address, timeout=microseconds for socket timeout.
• Added 4K and 8K encryption support (#163).

Changed

• [WebM][VP9] Use subsample encryption by default for VP9 per latest WebM spec.
  The feature can be disabled by setting --webm_subsample_encryption=false.
• [WebM] Mimic mp4 behavior: either all the samples in a segment are encrypted
  or all the samples are clear.
• [WebM] Move index segment forward to right after init segment (#159).

Fixed

• Fixed AdaptationSet switching signalling when
  --generate_dash_if_iop_compliant_mpd is enabled (#156).
• [H.264] Fixed access unit detection problem if there are multiple video slice
  NAL units in the same frame (#134).
• [WebVTT] Detect .webvtt as WebVTT files.
• [WebM] Fixed keyframe detection in BlockGroup for encrypted frames.
• [HLS] Fixed HLS playlist problem when clear lead is set to zero (#169).
• Fixed --version command.

Deprecated

• Deprecated flag --udp_interface_address. Use udp options instead.
• Deprecated flags --single_segment and --profile. They are now derived from
  the presence of 'segment_template' in stream descriptors.

v1.5.1

Added

• Added a runtime flag to use decoding timestamp in timeline for mp4:
  --mp4_use_decoding_timestamp_in_timeline

Changed

• Remove restriction that sps:gaps_in_frame_num_value_allowed_flag should be
  0 in h264. Packager should not care about this flag (#126).
• Remove restriction that sample duration cannot be zero. A warning message
  is printed instead (#127).

Fixed

• Fix text formats (webvtt, ttml) not recognized problem (#130).