shithub: libvpx

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bug fix possible keyframe context divide by zero

vp8_adjust_key_frame_context() divides by
estimate_keyframe_frequency() which can
return 0 in the case where --kf-max-dist=0.

Change-Id: Idfc59653478a0073187cd2aa420e98a321103daa

--- a/vp8/encoder/ratectrl.c

+++ b/vp8/encoder/ratectrl.c

@@ -1468,8 +1468,10 @@

         /* Assume a default of 1 kf every 2 seconds, or the max kf interval,

          * whichever is smaller.

          */

+        int key_freq = cpi->oxcf.key_freq>0 ? cpi->oxcf.key_freq : 1;

         av_key_frame_frequency = (int)cpi->output_frame_rate * 2;

-        if (av_key_frame_frequency > cpi->oxcf.key_freq)

+

+        if (cpi->oxcf.auto_key && av_key_frame_frequency > key_freq)

             av_key_frame_frequency = cpi->oxcf.key_freq;

         cpi->prior_key_frame_distance[KEY_FRAME_CONTEXT - 1]

-- 

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