Hi

some options not documented in doc/*
(this list is not complete)

libavcodec/options_table.h:{"copy_opaque", "propagate opaque values", 0, AV_OPT_TYPE_CONST, {.i64 = AV_CODEC_FLAG_COPY_OPAQUE}, .unit = "flags"},
libavcodec/options_table.h:{"ticks_per_frame", NULL, OFFSET(ticks_per_frame), AV_OPT_TYPE_INT, {.i64 = 1 }, 1, INT_MAX, A|V|E|D},

libavcodec/options_table.h:{"side_data_prefer_packet", "Comma-separated list of side data types for which user-supplied (container) data is preferred over coded bytestream",
libavcodec/options_table.h:    OFFSET(side_data_prefer_packet), AV_OPT_TYPE_INT | AR, .min = -1, .max = INT_MAX, .flags = V|A|S|D, .unit = "side_data_pkt" },

libavcodec/options_table.h:    {"mastering_display_metadata",  .default_val.i64 = AV_PKT_DATA_MASTERING_DISPLAY_METADATA,  .type = AV_OPT_TYPE_CONST, .flags = A|D, .unit = "side_data_pkt" },

thx

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

He who knows, does not speak. He who speaks, does not know. -- Lao Tsu