static int mov_write_mvhd_tag(ByteIOContext *pb, MOVContext *mov) { int maxTrackID = 1, i; int64_t maxTrackLenTemp, maxTrackLen = 0; int version; for (i=0; i<MAX_STREAMS; i++) { if(mov->tracks[i].entry > 0) { maxTrackLenTemp = av_rescale_rnd(mov->tracks[i].trackDuration, globalTimescale, mov->tracks[i].timescale, AV_ROUND_UP); if(maxTrackLen < maxTrackLenTemp) maxTrackLen = maxTrackLenTemp; if(maxTrackID < mov->tracks[i].trackID) maxTrackID = mov->tracks[i].trackID; } } version = maxTrackLen < UINT32_MAX ? 0 : 1; (version == 1) ? put_be32(pb, 120) : put_be32(pb, 108); /* size */ put_tag(pb, "mvhd"); put_byte(pb, version); put_be24(pb, 0); /* flags */ if (version == 1) { put_be64(pb, mov->time); put_be64(pb, mov->time); } else { put_be32(pb, mov->time); /* creation time */ put_be32(pb, mov->time); /* modification time */ } put_be32(pb, mov->timescale); /* timescale */ (version == 1) ? put_be64(pb, maxTrackLen) : put_be32(pb, maxTrackLen); /* duration of longest track */ put_be32(pb, 0x00010000); /* reserved (preferred rate) 1.0 = normal */ put_be16(pb, 0x0100); /* reserved (preferred volume) 1.0 = normal */ put_be16(pb, 0); /* reserved */ put_be32(pb, 0); /* reserved */ put_be32(pb, 0); /* reserved */ /* Matrix structure */ put_be32(pb, 0x00010000); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x00010000); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x0); /* reserved */ put_be32(pb, 0x40000000); /* reserved */ put_be32(pb, 0); /* reserved (preview time) */ put_be32(pb, 0); /* reserved (preview duration) */ put_be32(pb, 0); /* reserved (poster time) */ put_be32(pb, 0); /* reserved (selection time) */ put_be32(pb, 0); /* reserved (selection duration) */ put_be32(pb, 0); /* reserved (current time) */ put_be32(pb, maxTrackID+1); /* Next track id */ return 0x6c; }