Changes in 2.7

• FFT video filter
• TDSC decoder
• DTS lossless extension (XLL) decoding (not lossless, disabled by default)
• showwavespic filter
• DTS decoding through libdcadec
• Drop support for nvenc API before 5.0
• nvenc HEVC encoder
• Detelecine filter
• Intel QSV-accelerated H.264 encoding
• MMAL-accelerated H.264 decoding
• basic APNG encoder and muxer with default extension "apng"
• unpack DivX-style packed B-frames in MPEG-4 bitstream filter
• WebM Live Chunk Muxer
• nvenc level and tier options
• chorus filter
• Canopus HQ/HQA decoder
• Automatically rotate videos based on metadata in ffmpeg
• improved Quickdraw compatibility
• VP9 high bit-depth and extended colorspaces decoding support
• WebPAnimEncoder API when available for encoding and muxing WebP
• Direct3D11-accelerated decoding
• Support Secure Transport
• Multipart JPEG demuxer