static int mov_write_ms_tag(AVIOContext *pb, MOVTrack *track) { int64_t pos = avio_tell(pb); avio_wb32(pb, 0); avio_wl32(pb, track->tag); // store it byteswapped track->enc->codec_tag = av_bswap16(track->tag >> 16); ff_put_wav_header(pb, track->enc, 0); return update_size(pb, pos); }