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n9.0.1 Patch 4: Add option to remove initial padding in aac encoding #39

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Merged
jennessa-ma merged 1 commit into from
Aug 14, 2026
Merged

n9.0.1 Patch 4: Add option to remove initial padding in aac encoding #39

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3 changes: 2 additions & 1 deletion libavcodec/aacenc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1162,7 +1162,7 @@ static av_cold int aac_encode_init(AVCodecContext *avctx)
/* Constants */
s->last_frame_pb_count = 0;
avctx->frame_size = 1024;
avctx->initial_padding = 1024;
avctx->initial_padding = s->options.remove_initial_padding ? 0 : 1024;
s->lambda = avctx->global_quality > 0 ? avctx->global_quality : 120;

/* Channel map and unspecified bitrate guessing */
Expand Down Expand Up @@ -1284,6 +1284,7 @@ static const AVOption aacenc_options[] = {
{"aac_pns", "Perceptual noise substitution", offsetof(AACEncContext, options.pns), AV_OPT_TYPE_BOOL, {.i64 = 1}, -1, 1, AACENC_FLAGS},
{"aac_tns", "Temporal noise shaping", offsetof(AACEncContext, options.tns), AV_OPT_TYPE_BOOL, {.i64 = 1}, -1, 1, AACENC_FLAGS},
{"aac_pce", "Forces the use of PCEs", offsetof(AACEncContext, options.pce), AV_OPT_TYPE_BOOL, {.i64 = 0}, -1, 1, AACENC_FLAGS},
{"remove_aac_initial_padding", "Set initial padding to 0 instead of 1024", offsetof(AACEncContext, options.remove_initial_padding), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AACENC_FLAGS},
FF_AAC_PROFILE_OPTS
{NULL}
};
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1 change: 1 addition & 0 deletions libavcodec/aacenc.h
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Expand Up @@ -69,6 +69,7 @@ typedef struct AACEncOptions {
int pce;
int mid_side;
int intensity_stereo;
int remove_initial_padding;
} AACEncOptions;

/**
Expand Down