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cxh 2026-01-09 10:49:24 +08:00
parent 0f892b5c5b
commit 5b0b6c1c65
1 changed files with 19 additions and 11 deletions
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30
src/rtmp_manager.cpp
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@ -52,36 +52,44 @@ std::string RTMPManager::make_key(const std::string& name) { return name + "_mai
// ========== 创建 RTMP Pipeline ==========
GstElement* RTMPManager::create_pipeline(const Camera& cam)
{
const int gop = 15;
const std::string rtmp_url = "rtmp://127.0.0.1:1935/" + cam.name;
std::string pipeline_str = "v4l2src device=" + cam.device +
" io-mode=dmabuf "
// ⭐ 强制打时间戳（关键）
"! identity do-timestamp=true "
// 原始 4:3 输入
"! video/x-raw,format=NV12,width=1280,height=960,framerate=30/1 "
// 裁成 16:9
"! videocrop top=120 bottom=120 "
// 缩放到目标分辨率
"! videoscale "
"! video/x-raw,width=" +
std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
" "
// 缓冲（只在这里允许丢帧）
"! queue max-size-buffers=12 max-size-time=0 leaky=downstream "
// 编码
"! mpph264enc rc-mode=cbr "
"bps=" +
std::to_string(cam.bitrate) +
" "
"gop=30 "
"header-mode=each-idr profile=main "
"header-mode=each-idr "
"profile=main "
"! h264parse config-interval=1 "
// 解析 + 帧探针位置
"! h264parse name=parse config-interval=1 "
"! video/x-h264,stream-format=avc,alignment=au "
// RTMP
"! flvmux streamable=true "
"! rtmpsink location=\"" +
rtmp_url +
"\" "
@ -97,6 +105,7 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
g_error_free(error);
return nullptr;
}
return pipeline;
}
@ -105,8 +114,8 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
{
const std::string key = make_key(cam.name);
constexpr int64_t START_TIMEOUT_MS = 12000; // ⭐ 启动宽限期
constexpr int64_t NO_FRAME_TIMEOUT_MS = 10000;
constexpr int64_t START_TIMEOUT_MS = 12000; // 启动宽限
constexpr int64_t NO_FRAME_TIMEOUT_MS = 15000; // 运行期宽限
while (ctx->thread_running)
{
@ -129,7 +138,7 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
ctx->last_frame_ms.store(0, std::memory_order_relaxed);
// ⭐ 帧探测挂在 h264parse
// ⭐ 帧探针挂在 h264parse src
if (GstElement* parse = gst_bin_get_by_name(GST_BIN(pipeline), "parse"))
{
if (GstPad* pad = gst_element_get_static_pad(parse, "src"))
@ -187,9 +196,8 @@ void RTMPManager::stream_loop(Camera cam, StreamContext* ctx)
else if (std::chrono::duration_cast<std::chrono::milliseconds>(now - launch_tp).count() >
START_TIMEOUT_MS)
{
LOG_ERROR("[RTMP] " + key + " - no frames during startup");
need_restart = true;
break;
// ⭐ 启动阶段允许慢，不重启
LOG_WARN("[RTMP] " + key + " - no frames yet during startup (tolerated)");
}
}
else