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avcodec/opus/enc: set avctx->frame_size to a better guess based on encoder configuration

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2026-01-24 14:02:58 -03:00
parent 5b4ba2e1ac
commit c3aea7628c
1 changed files with 2 additions and 6 deletions
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8
libavcodec/opus/enc.c
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@ -638,12 +638,8 @@ static av_cold int opus_encode_init(AVCodecContext *avctx)
s->avctx = avctx;
s->channels = avctx->ch_layout.nb_channels;
/* Opus allows us to change the framesize on each packet (and each packet may
* have multiple frames in it) but we can't change the codec's frame size on
* runtime, so fix it to the lowest possible number of samples and use a queue
* to accumulate AVFrames until we have enough to encode whatever the encoder
* decides is the best */
avctx->frame_size = 120;
int max_delay_samples = (s->options.max_delay_ms * s->avctx->sample_rate) / 1000;
avctx->frame_size = OPUS_BLOCK_SIZE(FFMIN(OPUS_SAMPLES_TO_BLOCK_SIZE(max_delay_samples), CELT_BLOCK_960));
/* Initial padding will change if SILK is ever supported */
avctx->initial_padding = 120;