static void mxf_write_identification(AVFormatContext *s) { MXFContext *mxf = s->priv_data; AVIOContext *pb = s->pb; const char *company = "Libav"; const char *product = "OP1a Muxer"; const char *version; int length; mxf_write_metadata_key(pb, 0x013000); PRINT_KEY(s, "identification key", pb->buf_ptr - 16); version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ? "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION); length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16 klv_encode_ber_length(pb, length); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, Identification, 0); PRINT_KEY(s, "identification uid", pb->buf_ptr - 16); // write generation uid mxf_write_local_tag(pb, 16, 0x3C09); mxf_write_uuid(pb, Identification, 1); mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String // write product uid mxf_write_local_tag(pb, 16, 0x3C05); mxf_write_uuid(pb, Identification, 2); // modification date mxf_write_local_tag(pb, 8, 0x3C06); avio_wb64(pb, mxf->timestamp); }