From: Paul B Mahol <[email protected]>
20 ms is the default in the libopus encoder, and gives better
quality than 10 ms.
---
libavcodec/libopusenc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/libopusenc.c b/libavcodec/libopusenc.c
index 592b8ca..9af8bcd 100644
--- a/libavcodec/libopusenc.c
+++ b/libavcodec/libopusenc.c
@@ -375,7 +375,7 @@ static const AVOption libopus_options[] = {
{ "voip", "Favor improved speech intelligibility", 0,
AV_OPT_TYPE_CONST, { .i64 = OPUS_APPLICATION_VOIP }, 0, 0,
FLAGS, "application" },
{ "audio", "Favor faithfulness to the input", 0,
AV_OPT_TYPE_CONST, { .i64 = OPUS_APPLICATION_AUDIO }, 0, 0,
FLAGS, "application" },
{ "lowdelay", "Restrict to only the lowest delay modes", 0,
AV_OPT_TYPE_CONST, { .i64 = OPUS_APPLICATION_RESTRICTED_LOWDELAY }, 0, 0,
FLAGS, "application" },
- { "frame_duration", "Duration of a frame in milliseconds",
OFFSET(frame_duration), AV_OPT_TYPE_FLOAT, { .dbl = 10.0 }, 2.5, 60.0, FLAGS },
+ { "frame_duration", "Duration of a frame in milliseconds",
OFFSET(frame_duration), AV_OPT_TYPE_FLOAT, { .dbl = 20.0 }, 2.5, 60.0, FLAGS },
{ "packet_loss", "Expected packet loss percentage",
OFFSET(packet_loss), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 100, FLAGS },
{ "vbr", "Variable bit rate mode", OFFSET(vbr),
AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 2, FLAGS, "vbr" },
{ "off", "Use constant bit rate", 0, AV_OPT_TYPE_CONST, {
.i64 = 0 }, 0, 0, FLAGS, "vbr" },
--
1.7.9.4
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