[FFmpeg-devel] [PATCH] ac3enc: fix AC3 downmix metadata issue

Piotr Oleszczyk piotr at oleszczyk.eu
Thu Apr 30 19:17:36 EEST 2020


Due to a typo, it was impossible to write 0.595 / -4.5 dB
of ltrt_cmixlev, ltrt_surmixlev, loro_cmixlev, loro_surmixlev.
Without any error 0.841 / -1.5 dB was written to file.
---
 libavcodec/ac3enc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index 7ce17db067..ddbc7b247c 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -63,7 +63,7 @@ static const float surmixlev_options[SURMIXLEV_NUM_OPTIONS] = {
 
 #define EXTMIXLEV_NUM_OPTIONS 8
 static const float extmixlev_options[EXTMIXLEV_NUM_OPTIONS] = {
-    LEVEL_PLUS_3DB,  LEVEL_PLUS_1POINT5DB,  LEVEL_ONE,       LEVEL_MINUS_4POINT5DB,
+    LEVEL_PLUS_3DB,  LEVEL_PLUS_1POINT5DB,  LEVEL_ONE,       LEVEL_MINUS_1POINT5DB,
     LEVEL_MINUS_3DB, LEVEL_MINUS_4POINT5DB, LEVEL_MINUS_6DB, LEVEL_ZERO
 };
 
-- 
2.17.1



More information about the ffmpeg-devel mailing list