GStreamer 1.6.0 发布，多媒体开发框架

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　　GStreamer 团队很高兴的发布了 1.6.0 版本，该版本主要值得关注的改进包括：

• 　　Stereoscopic 3D and multiview video support
  
• 　　Trick mode API for key-frame only fast-forward/fast-reverse playback etc.
  
• 　　Improved DTS (decoding timestamp) vs. PTS (presentation timestamp) handling to account for negative DTS
  
• 　　New GstVideoConverter API for more optimised and more correct conversion of raw video frames between all supported formats, with rescaling
  
• 　　v4l2src now supports renegotiation
  
• 　　v4l2transform can now do scaling
  
• 　　V4L2 Element now report Colorimetry properly
  
• 　　Easier chunked recording of MP4, Matroska, Ogg, MPEG-TS: new splitmuxsink and multifilesink improvements
  
• 　　Content Protection signalling API and Common Encryption (CENC) support for DASH/MP4
  
• 　　Many adaptive streaming (DASH, HLS and MSS) improvements
  
• 　　New PTP and NTP network client clocks and better remote clock tracking stability
  
• 　　High-quality text subtitle overlay at display resolutions with glimagesink or gtkglsink
  
• 　　RECORD support for the GStreamer RTSP Server
  
• 　　Retransmissions (RTX) support in RTSP server and client
  
• 　　RTSP seeking support in client and server has been fixed
  
• 
  　　RTCP scheduling improvements and reduced>
  
• 　　MP4/MOV muxer acquired a new "robust" mode of operation which attempts to keep the output file in a valid state at all times
  
• 　　Live mixing support in aggregator, audiomixer and compositor was improved a lot
  
• 　　compositor now also supports rescaling of inputs streams on the fly
  
• 　　New audiointerleave element with proper input synchronisation and live input support
  
• 　　Blackmagic Design DeckLink capture and playback card support was rewritten from scratch; 2k/4k support; mode sensing
  
• 　　KLV metadata support in RTP and MPEG-TS
  
• 　　H.265 video encoder (x265), decoders (libav, libde265) and RTP payloader and depayloaders
  
• 　　New DTLS plugin and SRTP/DTLS support
  
• 　　OpenGL3 support, multiple contexts and context propagation, 3D video, transfer/conversion separation, subtitle blending
  
• 　　New OpenGL-based QML video sink, Gtk GL video sink, CoreAnimation CAOpenGLLayerSink video sink
  
• 　　gst-libav switched to ffmpeg as libav-provider, gains support for 3D/multiview video, trick modes, and the CAVS codec
  
• 　　GstHarness API for unit tests
  
• 　　gst-editing-services got a completely new ges-launch-1.0 interface, improved mixing support and integration into gst-validate
  
• 　　gnonlin has been deprecated in favor of nle (Non Linear Engine) in gst-editing-services
  
• 　　gst-validate has a new plugin system, an extensive default testsuite, support for concurrent test runs and valgrind support
  
• 　　cerbero build tool for SDK binary packages gains new 'bundle-source' command
  
• 　　Various improvements to the Android, iOS, OS X and Windows platform support
  

　　修复的 bug 有：

• 　　Crashes in the gst-libav encoders were fixed
  
• 　　More DASH-IF test streams are working now
  
• 
  　　Live DASH, HLS and MS SmoothStreaming streams work more>
  
• 　　Reverse playback works with scaletempo to keep the audio pitch
  
• 　　Correct stream-time is reported for negative applied_rate
  
• 　　SRTP packet validation during decoding does not reject valid packets anymore
  
• 　　Fixes for audioaggregator and aggregator to start producing output at the right time, and e.g. not outputting lots of silence in the beginning
  
• 　　gst-libav's internal ffmpeg snapshot was updated to 2.8.1
  
• 　　cerbero has support for Mac OS X 10.11 (El Capitan)
  
• 　　Various memory leaks were fixed, including major leaks in playbin, playsink and decodebin
  
• 　　Various GObject-Introspection annotation fixes for bindings
  
• 　　and many, many more