diff options
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/movenc.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/libavformat/movenc.c b/libavformat/movenc.c index 86c9461314..0c6b09da8e 100644 --- a/libavformat/movenc.c +++ b/libavformat/movenc.c @@ -82,15 +82,21 @@ static int64_t update_size(AVIOContext *pb, int64_t pos) return curpos - pos; } +static int co64_required(const MOVTrack *track) +{ + if (track->entry > 0 && track->cluster[track->entry - 1].pos + track->data_offset > UINT32_MAX) + return 1; + return 0; +} + /* Chunk offset atom */ static int mov_write_stco_tag(AVIOContext *pb, MOVTrack *track) { int i; - int mode64 = 0; // use 32 bit size variant if possible + int mode64 = co64_required(track); // use 32 bit size variant if possible int64_t pos = avio_tell(pb); avio_wb32(pb, 0); /* size */ - if (pos > UINT32_MAX) { - mode64 = 1; + if (mode64) { ffio_wfourcc(pb, "co64"); } else ffio_wfourcc(pb, "stco"); |