FFmpeg 4.0版发布

FFmpeg 4.0是这一全球最流行的视频处理工具在过去近两年时间内的一次重大更新，包括增加对3月刚刚完成1.0版定稿的AV1的支持。感谢FFmpeg开发者、OnVideo联合创始人刘歧提供新闻线索和审校。

文 / 包研

审校 / 刘歧

北京时间4月20日消息，全球最流行的视频处理工具FFmpeg发布了代号为“Wu”的4.0版，并在官网提供了下载地址（https://ffmpeg.org/download.html#releases）。

FFmpeg 4.0版更新重点更新如下，其中包括对今年3月刚刚1.0定稿的AV1的支持：

• Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams

• Intel QSV-accelerated MJPEG encoding

• NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding

• Intel QSV-accelerated overlay filter

• OpenCL overlay filter

• support LibreSSL (via libtls)

• Removed the ffserver program

• Add android_camera indev

• AV1 Support through libaom

• Haivision SRT protocol via libsrt

  
  

FFmpeg 4.0全部更新包括：

• Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams

• Experimental MagicYUV encoder

• TiVo ty/ty+ demuxer

• Intel QSV-accelerated MJPEG encoding

• native aptX and aptX HD encoder and decoder

• NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding

• Intel QSV-accelerated overlay filter

• mcompand audio filter

• acontrast audio filter

• OpenCL overlay filter

• video mix filter

• video normalize filter

• audio lv2 wrapper filter

• VAAPI MJPEG and VP8 decoding

• AMD AMF H.264 and HEVC encoders

• video fillborders filter

• video setrange filter

• support LibreSSL (via libtls)

• Dropped support for building for Windows XP. The minimum supported Windows version is Windows Vista.

• deconvolve video filter

• entropy video filter

• hilbert audio filter source

• aiir audio filter

• Removed the ffserver program

• Removed the ffmenc and ffmdec muxer and demuxer

• VideoToolbox HEVC encoder and hwaccel

• VAAPI-accelerated ProcAmp (color balance), denoise and sharpness filters

• Add android_camera indev

• codec2 en/decoding via libcodec2

• native SBC encoder and decoder

• drmeter audio filter

• hapqa_extract bitstream filter

• filter_units bitstream filter

• AV1 Support through libaom

• E-AC-3 dependent frames support

• bitstream filter for extracting E-AC-3 core

• Haivision SRT protocol via libsrt

• vfrdet filter

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