1/avcodec
2/avfft
3/avpacket
4/cabac
5/celp_math
6/codec_desc
7/dct
8/fft
9/fft-fixed32
10/golomb
11/h264_levels
12/h265_levels
13/htmlsubtitles
14/iirfilter
15/jpeg2000dwt
16/mathops
17/mjpegenc_huffman
18/motion
19/mpeg12framerate
20/rangecoder
21/snowenc
22