- Common Encryption (CENC) MP4 encoding and decoding support. 
- New filters: extrastereo, OCR, alimiter, stereowiden, stereotools, rubberband, tremolo, agate, chromakey, maskedmerge, displace, selectivecolor, zscale, shuffleframes, vibrato, realtime, compensationdelay, acompressor, apulsator, sidechaingate, aemphasis, virtual binaural acoustics, showspectrumpic, afftfilt, convolution, swaprect, and others. 
- New decoding: DXV, Screenpresso SPV1, ADPCM PSX, SDX2 DPCM, innoHeim/Rsupport Screen Capture Codec, ADPCM AICA, XMA1 & XMA2, and Cineform HD. 
- New muxing: Chromaprint fingerprinting, WVE demuxer, Interplay ACM, and IVR demuxer. 
- Dynamic volume control for ffplay. 
- Native AAC encoder improvements. 
- Zero-copy Intel QSV transcoding. 
- Microsoft DXVA2-accelerated VP9 decoding on Windows. 
- VA-API VP9 hardware acceleration. 
- Automatic bitstream filtering. 


오픈소스로 이정도까지해내는거보면 존나 대단하다.


이런거 만드는애들이 진짜 홍익인간정신으로 자선사업하는거같음


https://ffmpeg.org/