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cxh 2026-01-09 14:16:31 +08:00
parent 8499411970
commit 71d95e849c
1 changed files with 13 additions and 24 deletions
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37
src/rtmp_manager.cpp
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@ -115,33 +115,22 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
{
const int fps = 30;
const int bitrate = cam.bitrate; // 3.5M~4M
const int gop = 4;
const int gop = fps; // 建议：1 秒一个 IDR
const std::string stream_name = cam.name;
const std::string rtmp_url = "rtmp://127.0.0.1:1935/" + stream_name;
std::string pipeline_str = "v4l2src name=src device=" + cam.device +
" io-mode=dmabuf "
std::string pipeline_str = "v4l2src device=" + cam.device +
" io-mode=dmabuf do-timestamp=true "
// 原始 4:3 输入
// ✅ 相机原生格式：完全匹配驱动
"! video/x-raw,format=NV12,"
"width=1280,height=960,"
"framerate=30/1 "
"width=1280,height=960,framerate=30/1 "
// ⭐ 裁成 16:9（上下各裁 120）
"! videocrop top=120 bottom=120 "
// ✅ 缓冲，只负责解耦，不丢帧
"! queue max-size-buffers=4 max-size-time=0 max-size-bytes=0 "
// 可选：如果你想输出非 1280x720（比如 960x540）
"! videoscale "
"! video/x-raw,"
"width=" +
std::to_string(cam.width) + ",height=" + std::to_string(cam.height) +
" "
// 队列（建议后面再把 leaky 去掉）
"! queue max-size-buffers=2 max-size-time=0 leaky=downstream "
// 编码
// ✅ 硬件编码
"! mpph264enc "
"rc-mode=cbr "
"bps=" +
@ -150,17 +139,17 @@ GstElement* RTMPManager::create_pipeline(const Camera& cam)
"gop=" +
std::to_string(gop) +
" "
"header-mode=each-idr "
"profile=main "
"header-mode=each-idr "
// ✅ H.264 打包
"! h264parse config-interval=1 "
"! video/x-h264,stream-format=avc,alignment=au "
"! flvmux streamable=true "
// ✅ FLV / RTMP
"! flvmux streamable=true "
"! rtmpsink location=\"" +
rtmp_url +
"\" "
"sync=false async=false";
rtmp_url + "\" sync=false async=false";
GError* error = nullptr;
GstElement* pipeline = gst_parse_launch(pipeline_str.c_str(), &error);