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avcodec: Allow enabling DTX in libopusenc

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This commit is contained in:
Paul Adenot
2026-04-21 13:38:44 +00:00
committed by Lynne
co-authored by Lynne
parent f4ac7dee87
commit 99d8d3891f
2 changed files with 13 additions and 0 deletions
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doc/encoders.texi
+4
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@@ -1045,6 +1045,10 @@ Other values include 0 for mono and stereo, 1 for surround sound with masking
and LFE bandwidth optimizations, and 255 for independent streams with an
unspecified channel layout.
@item dtx (N.A.)
Allow discontinuous transmission when set to 1. The default value is 0
(disabled).
@item apply_phase_inv (N.A.) (requires libopus >= 1.2)
If set to 0, disables the use of phase inversion for intensity stereo,
improving the quality of mono downmixes, but slightly reducing normal stereo
libavcodec/libopusenc.c
+9
View File
@@ -43,6 +43,7 @@ typedef struct LibopusEncOpts {
int packet_size;
int max_bandwidth;
int mapping_family;
int dtx;
#ifdef OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST
int apply_phase_inv;
#endif
@@ -160,6 +161,13 @@ static int libopus_configure_encoder(AVCodecContext *avctx, OpusMSEncoder *enc,
"Unable to set inband FEC: %s\n",
opus_strerror(ret));
ret = opus_multistream_encoder_ctl(enc,
OPUS_SET_DTX(opts->dtx));
if (ret != OPUS_OK)
av_log(avctx, AV_LOG_WARNING,
"Unable to set DTX: %s\n",
opus_strerror(ret));
if (avctx->cutoff) {
ret = opus_multistream_encoder_ctl(enc,
OPUS_SET_MAX_BANDWIDTH(opts->max_bandwidth));
@@ -557,6 +565,7 @@ static const AVOption libopus_options[] = {
{ "on", "Use variable bit rate", 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, FLAGS, .unit = "vbr" },
{ "constrained", "Use constrained VBR", 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, 0, 0, FLAGS, .unit = "vbr" },
{ "mapping_family", "Channel Mapping Family", OFFSET(mapping_family), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 255, FLAGS, .unit = "mapping_family" },
{ "dtx", "Enable DTX (Discontinuous transmission)", OFFSET(dtx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
#ifdef OPUS_SET_PHASE_INVERSION_DISABLED_REQUEST
{ "apply_phase_inv", "Apply intensity stereo phase inversion", OFFSET(apply_phase_inv), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS },
#endif