使用新分辨率将 h264/mjpeg 转码为 rtsp mjpeg

Question

我遇到的问题是，我的 IP 摄像头（大华）无法将 640x480 作为子流传输到我的 2N Verso 作为外置摄像头。它仅支持 1280x720 或 704x?? 和 320x288。

我尝试了一下 FFmpeg，让它以 http 流的形式工作。但 Verso 只接受 RTSP 流。

我是否有机会获得以 mjpeg 形式运行的 h264 流或 720p mjpeg（分辨率为 640x480）rtsp://ip-cam:554/stream.mjpg？

docker-compose.yaml除了我的评论之外，这里还有我的 rtsp2mjpeg代码：

version: '3'
services:
  rtsp2mjpg:
    image: eroji/rtsp2mjpg
    restart: always
    expose:
      - "8090"
    volumes:
      - /etc/localtime:/etc/localtime:ro
      # Uncomment below if you want to override default ffserver.conf
      # - ./ffserver.conf:/etc/ffserver.conf:ro
    environment:
      # Override the env vars below as needed
      RTSP_URL: rtsp://2n:[email protected]:554/cam/realmonitor?channel=1&subtype=0
      FFSERVER_LOG_LEVEL: error
      FFMPEG_LOG_LEVEL: warning
      FFMPEG_INPUT_OPTS: -use_wallclock_as_timestamps 1
      FFMPEG_OUTPUT_OPTS: -async 1 -vsync 1
    healthcheck:
      test: ["CMD-SHELL", "curl -f http://localhost:8090/still.jpg --max-time 1 --output /dev/null || exit 1"]
      interval: 15s
      timeout: 1s
      retries: 3
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
  nginx:
    image: nginx:alpine
    restart: always
    links:
      - rtsp2mjpg
    ports:
      - "80:80"
    volumes:
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf:ro

还有ffserver.conf：

HTTPPort 8090
HTTPBindAddress 0.0.0.0
MaxHTTPConnections 2000
MaxClients 1000
MaxBandwidth 10000

<Feed feed.ffm>
File /tmp/feed.ffm
FileMaxSize 50M
</Feed>

<Stream live.mjpg>
Feed feed.ffm
Format mpjpeg
VideoFrameRate 15
VideoSize 640x480
VideoQMin 1
VideoQMax 15
VideoIntraOnly
NoAudio
Strict -1
NoDefaults
</Stream>

<Stream still.jpg>
Feed feed.ffm
Format jpeg
VideoFrameRate 2
VideoSize 1920x1080
VideoQMin 1
VideoQMax 15
VideoIntraOnly
NoAudio
Strict -1
NoDefaults
</Stream>

我可以在这里插入转码和 rtsp 输出吗？