+
+2021-04-27 - xxxxxxxxxx - lavf yyyyyyyyy - avformat.h
+ Constified the pointers to AVInputFormats and AVOutputFormats
+ in AVFormatContext, avformat_alloc_output_context2(),
+ av_find_input_format(), av_probe_input_format(),
+ av_probe_input_format2(), av_probe_input_format3(),
+ av_probe_input_buffer2(), av_probe_input_buffer(),
+ avformat_open_input(), av_guess_format() and av_guess_codec().
+ Furthermore, constified the AVProbeData in av_probe_input_format(),
+ av_probe_input_format2() and av_probe_input_format3().
+