[FFmpeg-cvslog] avcodec/libopusenc: change default frame duration to 20 ms
Paul B Mahol
git at videolan.org
Mon Nov 18 14:20:08 CET 2013
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Nov 15 01:09:06 2013 +0000| [74906d3727ec3bd9b7b28dfa7a98ff6e8cf8b6d7] | committer: Paul B Mahol
avcodec/libopusenc: change default frame duration to 20 ms
20 ms is used by libopus encoder.
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=74906d3727ec3bd9b7b28dfa7a98ff6e8cf8b6d7
---
doc/encoders.texi | 2 +-
libavcodec/libopusenc.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/doc/encoders.texi b/doc/encoders.texi
index 34b930c..fa37b17 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1063,7 +1063,7 @@ Set maximum frame size, or duration of a frame in milliseconds. The
argument must be exactly the following: 2.5, 5, 10, 20, 40, 60. Smaller
frame sizes achieve lower latency but less quality at a given bitrate.
Sizes greater than 20ms are only interesting at fairly low bitrates.
-The default of FFmpeg is 10ms, but is 20ms in @command{opusenc}.
+The default is 20ms.
@item packet_loss (@emph{expect-loss})
Set expected packet loss percentage. The default is 0.
diff --git a/libavcodec/libopusenc.c b/libavcodec/libopusenc.c
index 97d3bba..8ceb877 100644
--- a/libavcodec/libopusenc.c
+++ b/libavcodec/libopusenc.c
@@ -400,7 +400,7 @@ 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" },
More information about the ffmpeg-cvslog
mailing list