FFmpeg find_stream_info variable
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D:\ test\ source\ FFmpeg\ fftools\ ffplay.c (356): static int find_stream_info = 1
D:\ test\ source\ FFmpeg\ fftools\ ffplay.c (2801): if (find_stream_info) {
D:\ test\ source\ FFmpeg\ fftools\ ffplay.c (2802): AVDictionary * * opts = setup_find_stream_info_opts (ic, codec_opts)
D:\ test\ source\ FFmpeg\ fftools\ ffplay.c (2805): err = avformat_find_stream_info (ic, opts)
D:\ test\ source\ FFmpeg\ fftools\ ffplay.c (3617): {"find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, {& find_stream_info}
The ffplay.c code determines that if find_stream_info is true, it invokes the avformat_find_stream_info probe stream format, which is defined in static const OptionDef options [] as follows
{"find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, {& find_stream_info}
"read and decode the streams to fill missing information with heuristics"}