commit ed7283089cd1b6e8e3913bcfa310647a7797c288
author Jean-Marc Valin <jmvalin@jmvalin.ca> Thu May 24 02:36:30 2018 -0400
committer Jean-Marc Valin <jmvalin@jmvalin.ca> Thu May 24 02:36:30 2018 -0400
tree 71713c7d6334d4c553917b63cd3be528e21e6bfb
parent cd78f3976ea44797a10486592880511227d31594

Fix decision thresholds for larger frame sizes

Don't assume that frames larger than 20 ms save any overhead compared to 20 ms.

src/opus_encoder.c

diff --git a/src/opus_encoder.c b/src/opus_encoder.c
index e6cca90..47b586a 100644
--- a/src/opus_encoder.c
+++ b/src/opus_encoder.c
@@ -808,7 +808,8 @@
    opus_int32 equiv;
    equiv = bitrate;
    /* Take into account overhead from smaller frames. */
-   equiv -= (40*channels+20)*(frame_rate - 50);
+   if (frame_rate > 50)
+      equiv -= (40*channels+20)*(frame_rate - 50);
    /* CBR is about a 8% penalty for both SILK and CELT. */
    if (!vbr)
       equiv -= equiv/12;