ctx->time_base = AVRational{1, TIMEBASE};
if (oformat->flags & AVFMT_GLOBALHEADER) {
ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
ctx->time_base = AVRational{1, TIMEBASE};
if (oformat->flags & AVFMT_GLOBALHEADER) {
ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;