[FFmpeg-cvslog] avcodec/mpegvideo_enc: Limit bitrate tolerance to the representable

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michael at niedermayer.cc> | Sun May 30 18:38:23 2021 +0200| [245017ec8a87d6e4c764d06afeca37100b980d85] | committer: Michael Niedermayer

avcodec/mpegvideo_enc: Limit bitrate tolerance to the representable

Fixes: error: 1.66789e+11 is outside the range of representable values of type 'int'
Fixes: Ticket8201

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=245017ec8a87d6e4c764d06afeca37100b980d85
---

 libavcodec/mpegvideo_enc.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 3d4ffdf021..f804b8215d 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -463,9 +463,13 @@ av_cold int ff_mpv_encode_init(AVCodecContext *avctx)
     if (!s->fixed_qscale &&
         avctx->bit_rate * av_q2d(avctx->time_base) >
             avctx->bit_rate_tolerance) {
+        double nbt = avctx->bit_rate * av_q2d(avctx->time_base) * 5;
         av_log(avctx, AV_LOG_WARNING,
                "bitrate tolerance %d too small for bitrate %"PRId64", overriding\n", avctx->bit_rate_tolerance, avctx->bit_rate);
-        avctx->bit_rate_tolerance = 5 * avctx->bit_rate * av_q2d(avctx->time_base);
+        if (nbt <= INT_MAX) {
+            avctx->bit_rate_tolerance = nbt;
+        } else
+            avctx->bit_rate_tolerance = INT_MAX;
     }
 
     if (avctx->rc_max_rate &&