The segment muxer presumes the use of AVFMT_GLOBALHEADER, ssegment should
be use in case of formats which requires no global headers.
Regression introduced when merging
0826d8513d14f54da0b519360813327d5836b7fc.
.name = "segment",
.long_name = NULL_IF_CONFIG_SMALL("segment"),
.priv_data_size = sizeof(SegmentContext),
- .flags = AVFMT_NOFILE,
+ .flags = AVFMT_NOFILE|AVFMT_GLOBALHEADER,
.write_header = seg_write_header,
.write_packet = seg_write_packet,
.write_trailer = seg_write_trailer,