It is more reliable than AVCodecContext.frame_size for codecs with constant
packet duration.
---
libavformat/rtpenc.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/libavformat/rtpenc.c b/libavformat/rtpenc.c
index e4ef0fc..40437e8 100644
--- a/libavformat/rtpenc.c
+++ b/libavformat/rtpenc.c
@@ -129,10 +129,17 @@ static int rtp_write_header(AVFormatContext *s1)
s->max_frames_per_packet = 0;
if (s1->max_delay) {
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
- if (st->codec->frame_size == 0) {
+ int frame_size = av_get_audio_frame_duration(st->codec, 0);
+ if (!frame_size)
+ frame_size = st->codec->frame_size;
+ if (frame_size == 0) {
av_log(s1, AV_LOG_ERROR, "Cannot respect max delay: frame size
= 0\n");
} else {
- s->max_frames_per_packet = av_rescale_rnd(s1->max_delay,
st->codec->sample_rate, AV_TIME_BASE * (int64_t)st->codec->frame_size,
AV_ROUND_DOWN);
+ s->max_frames_per_packet =
+ av_rescale_q_rnd(s1->max_delay,
+ AV_TIME_BASE_Q,
+ (AVRational){ frame_size /
st->codec->sample_rate },
+ AV_ROUND_DOWN);
}
}
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
--
1.7.1
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