else if(track->enc->codec_id == CODEC_ID_DVVIDEO) put_tag(pb, "dvc ");
static int mov_write_video_tag(ByteIOContext *pb, MOVTrack* track){    int pos = url_ftell(pb);    put_be32(pb, 0); /* size */    if(track->enc->codec_id == CODEC_ID_SVQ1)      put_tag(pb, "SVQ1");    else if(track->enc->codec_id == CODEC_ID_SVQ3)      put_tag(pb, "SVQ3");    else if(track->enc->codec_id == CODEC_ID_MPEG4)      put_tag(pb, "mp4v");    else if(track->enc->codec_id == CODEC_ID_H263)      put_tag(pb, "s263");    else      put_tag(pb, "    "); /* Unknown tag */    put_be32(pb, 0); /* Reserved */    put_be16(pb, 0); /* Reserved */    put_be16(pb, 1); /* Data-reference index */    put_be32(pb, 0); /* Reserved (= 02000c) */    put_be32(pb, 0); /* Reserved ("SVis")*/    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved (400)*/    put_be16(pb, track->enc->width); /* Video width */    put_be16(pb, track->enc->height); /* Video height */    put_be32(pb, 0x00480000); /* Reserved */    put_be32(pb, 0x00480000); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be16(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be32(pb, 0); /* Reserved */    put_be16(pb, 0x18); /* Reserved */    put_be16(pb, 0xffff); /* Reserved */    if(track->enc->codec_id == CODEC_ID_MPEG4)        mov_write_esds_tag(pb, track);    else if(track->enc->codec_id == CODEC_ID_H263)        mov_write_d263_tag(pb);    else if(track->enc->codec_id == CODEC_ID_SVQ3)        mov_write_svq3_tag(pb);        return updateSize (pb, pos);}