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优化rtsp ntp时间戳，防止音视频不同步( #4017 #4018)

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rtp时间戳可能被截断，ntp时间戳生成时优先使用未截断的原始时间戳，防止音视频不同步
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ss002012 2024-11-18 14:08:53 +08:00 committed by GitHub
parent 51f49d3a89
commit 226b87a633
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1 changed files with 1 additions and 2 deletions
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src/Rtsp/RtspMuxer.cpp
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@ -23,11 +23,10 @@ void RtspMuxer::onRtp(RtpPacket::Ptr in, bool is_key) {
if (ref.rtp_stamp != in->getHeader()->stamp) {
// rtp时间戳变化才计算ntp，节省cpu资源 [AUTO-TRANSLATED:729d54f2]
// Only calculate NTP when the RTP timestamp changes, saving CPU resources
int64_t stamp_ms = in->getStamp() * uint64_t(1000) / in->sample_rate;
int64_t stamp_ms_inc;
// 求rtp时间戳增量 [AUTO-TRANSLATED:f6ba022f]
// Get the RTP timestamp increment
ref.stamp.revise(stamp_ms, stamp_ms, stamp_ms_inc, stamp_ms_inc);
ref.stamp.revise(in->ntp_stamp, in->ntp_stamp, stamp_ms_inc, stamp_ms_inc);
ref.rtp_stamp = in->getHeader()->stamp;
ref.ntp_stamp = stamp_ms_inc + _ntp_stamp_start;
}