[FFmpeg-devel] [PATCH 3/3] libvorbis: Disable strict bitrate management when not requested

[David Conrad]

This is 3 times faster in a quick benchmark
---
 libavcodec/libvorbis.c |    9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/libavcodec/libvorbis.c b/libavcodec/libvorbis.c
index cc9b2f2..f9a1b32 100644
--- a/libavcodec/libvorbis.c
+++ b/libavcodec/libvorbis.c
@@ -68,11 +68,10 @@ static av_cold int oggvorbis_init_encoder(vorbis_info *vi, AVCodecContext *avcco
                 avccontext->sample_rate, minrate, avccontext->bit_rate, maxrate))
             return -1;
 
-#ifdef OGGVORBIS_VBR_BY_ESTIMATE
-        /* variable bitrate by estimate */
-        if(vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE2_SET, NULL))
-            return -1;
-#endif
+        /* variable bitrate by estimate, disable slow rate management */
+        if(minrate == -1 && maxrate == -1)
+            if(vorbis_encode_ctl(vi, OV_ECTL_RATEMANAGE2_SET, NULL))
+                return -1;
     }
 
     /* cutoff frequency */
-- 
1.7.0.2