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avcodec/mpegvideo_enc: Fix potential overflow in RD

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Fixes: CID1500285 Unintentional integer overflow

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit b6b2b01025)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
release/6.1
Michael Niedermayer 8 months ago
parent 8174b4206d
commit 7cc79bfda9
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GPG Key ID: B18E8928B3948D64
1 changed files with 2 additions and 2 deletions
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  1. 4
      libavcodec/mpegvideo_enc.c

4
libavcodec/mpegvideo_enc.c
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@ -1433,7 +1433,7 @@ static int estimate_best_b_count(MpegEncContext *s)
goto fail; goto fail;
} }
rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3); rd += (out_size * (uint64_t)lambda2) >> (FF_LAMBDA_SHIFT - 3);
} }
/* get the delayed frames */ /* get the delayed frames */
@ -1442,7 +1442,7 @@ static int estimate_best_b_count(MpegEncContext *s)
ret = out_size; ret = out_size;
goto fail; goto fail;
} }
rd += (out_size * lambda2) >> (FF_LAMBDA_SHIFT - 3); rd += (out_size * (uint64_t)lambda2) >> (FF_LAMBDA_SHIFT - 3);
rd += c->error[0] + c->error[1] + c->error[2]; rd += c->error[0] + c->error[1] + c->error[2];

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