On 8/2/2021 9:06 AM, Niklas Haas wrote:
From: Niklas Haas <g...@haasn.dev>
The current code reads the wrong number of bits for `fg_model_id`, which
causes all of the values downstream of this to contain corrupt values.
Fixes: corrupt SEI values
Fixes: 4ff73add5dbe6c319d693355be44df2e17a0b8bf
Signed-off-by: Niklas Haas <g...@haasn.dev>
---
libavcodec/h264_sei.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c
index 7797f24650..329c2ea4f2 100644
--- a/libavcodec/h264_sei.c
+++ b/libavcodec/h264_sei.c
@@ -424,7 +424,7 @@ static int
decode_film_grain_characteristics(H264SEIFilmGrainCharacteristics *h,
if (h->present) {
memset(h, 0, sizeof(*h));
- h->model_id = get_bits(gb, 8);
+ h->model_id = get_bits(gb, 2);
h->separate_colour_description_present_flag = get_bits1(gb);
if (h->separate_colour_description_present_flag) {
h->bit_depth_luma = get_bits(gb, 3) + 8;
LGTM.
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