| Message ID | 20190419234110.32980-2-andreas.rheinhardt@gmail.com |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index c006cbf35c..1849ae3333 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -2059,9 +2059,7 @@ static int mkv_blockgroup_size(int pkt_size) int size = pkt_size + 4; size += ebml_num_size(size); size += 2; // EBML ID for block and block duration - size += 8; // max size of block duration - size += ebml_num_size(size); - size += 1; // blockgroup EBML ID + size += 9; // max size of block duration incl. length field return size; }
The earlier code included the size of the BlockGroup's length field and the EBML ID in the calculation of the size for the payload and ignored the size of the duration's length field. This meant that Blockgroups corresponding to packets with size 2^(7n) - 17 - n - i, i = 0,..., n - 1, n = 1,..., 8 (i.e. 110, 16364, 16365, 2097130..2097132, ...) were written with length fields that are unnecessarily long. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> --- libavformat/matroskaenc.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)