1/avfft
2/avpacket
3/cabac
4/celp_math
5/codec_desc
6/dct
7/fft
8/fft-fixed32
9/golomb
10/h264_levels
11/h265_levels
12/htmlsubtitles
13/iirfilter
14/imgconvert
15/jpeg2000dwt
16/mathops
17/mjpegenc_huffman
18/motion
19/mpeg12framerate
20/rangecoder
21/snowenc
22/utils
23