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| author | Alexander Strasser <eclipse7@gmx.net> | 2020-07-17 20:51:43 +0200 |
|---|---|---|
| committer | Alexander Strasser <eclipse7@gmx.net> | 2020-08-12 17:35:38 +0200 |
| commit | ecd71916d1e573a4b91b1fd182f3d232a1693dff (patch) | |
| tree | fb8d22b243642a6781ad6a1c1f975d48281ddd96 /libavcodec/aac_ac3_parser.c | |
| parent | 1201687da268c11459891a80ca1972aeaca8db88 (diff) | |
| download | ffmpeg-ecd71916d1e573a4b91b1fd182f3d232a1693dff.tar.gz | |
lavc/aac_ac3_parser: fix potential overflow when averaging bitrate
The new code is analog to how it's done in our mpegaudio parser.
Acked-by: Jun Zhao <barryjzhao@tencent.com>
Signed-off-by: Alexander Strasser <eclipse7@gmx.net>
Diffstat (limited to 'libavcodec/aac_ac3_parser.c')
| -rw-r--r-- | libavcodec/aac_ac3_parser.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/libavcodec/aac_ac3_parser.c b/libavcodec/aac_ac3_parser.c index 0746798dab..e5d4b53339 100644 --- a/libavcodec/aac_ac3_parser.c +++ b/libavcodec/aac_ac3_parser.c @@ -100,9 +100,8 @@ get_next: /* Calculate the average bit rate */ s->frame_number++; if (avctx->codec_id != AV_CODEC_ID_EAC3) { - avctx->bit_rate = - (s->last_bit_rate * (s->frame_number -1) + s->bit_rate)/s->frame_number; - s->last_bit_rate = avctx->bit_rate; + avctx->bit_rate += + (s->bit_rate - avctx->bit_rate) / s->frame_number; } } |