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社区首页 >问答首页 >如何为长时间运行的rtsp流调试ffmpeg可靠性

问如何为长时间运行的rtsp流调试ffmpeg可靠性
EN

Stack Overflow用户
提问于 2022-09-09 16:58:01
回答 1查看 127关注 0票数 0

我有一个长时间运行的ffmpeg后台进程，它“观察”一个rtsp流并每7分钟拍摄一次快照。

它是这样运行的

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C:\Windows\System32\cmd.exe /c C:\ffmpeg\bin\ffmpeg.exe -nostdin -rtsp_transport tcp -y -timeout 5000000 -i rtsp://someurl -q:v 1 -an -vf fps=0.002381,scale="1280:720" -strftime 1 -f image2 C:\somelocalfolder\%Y-%m-%d_%H-%M-%S.jpg > c:\ffmpeglog.txt 2>&1

这个过程持续了几天，但间歇性地，一次拍几个小时，似乎错过了拍照，直到最后它又开始拍摄它们--然后又失败了，等等。信息级别的日志没有帮助。我检查了流的时候，当它没有拍摄快照和流是向上的。这里发生了什么事？我如何调试这个？

下面是每小时完整快照的图片。应该总是在8到9之间。

​

原木看起来像这样

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    ffmpeg version 2022-03-31-git-e301a24fa1-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11.2.0 (Rev7, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      57. 24.101 / 57. 24.101
  libavcodec     59. 25.100 / 59. 25.100
  libavformat    59. 20.101 / 59. 20.101
  libavdevice    59.  6.100 / 59.  6.100
  libavfilter     8. 29.100 /  8. 29.100
  libswscale      6.  6.100 /  6.  6.100
  libswresample   4.  6.100 /  4.  6.100
  libpostproc    56.  5.100 / 56.  5.100
Input #0, rtsp, from 'rtsp://somerul':
  Metadata:
    title           : HIK Media Server V4.21.005
    comment         : HIK Media Server Session Description : standard
  Duration: N/A, start: 0.033000, bitrate: N/A
  Stream #0:0: Video: h264 (High), yuv420p(progressive), 704x576, 30 tbr, 90k tbn
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
[swscaler @ 000002a1c2c20680] [swscaler @ 000002a1c2c2e0c0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 000002a1c2c20680] [swscaler @ 000002a1c2c67c40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 000002a1c2c20680] [swscaler @ 000002a1c2cc6700] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'C:\somelocalfolder\Temp\stream_2\StreamedImages\%Y-%m-%d_%H-%M-%S.jpg':
  Metadata:
    title           : HIK Media Server V4.21.005
    comment         : HIK Media Server Session Description : standard
    encoder         : Lavf59.20.101
  Stream #0:0: Video: mjpeg, yuvj420p(pc, progressive), 1280x720, q=2-31, 200 kb/s, 0.0024 fps, 0.0024 tbn
    Metadata:
      encoder         : Lavc59.25.100 mjpeg
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
frame=    1 fps=0.0 q=0.0 size=N/A time=00:00:00.00 bitrate=N/A speed=   0x

更新我得到了一些跟踪日志。ffmpeg似乎在某个时候默默地失败了，停止拍摄快照。

在大约300万条日志行(在我的例子中实际上只有几个小时)之后，我得到以下信息

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rtsp://192.168.15.195:554/streaming/channels/904: Unknown error

但芬伯默默地继续下去。下面是更多的日志

代码语言：javascript
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    [Parsed_fps_0 @ 00000248e7d50e40] Read frame with in pts 1074443040, out pts 28
[Parsed_fps_0 @ 00000248e7d50e40] Dropping frame with pts 28
frame=   28 fps=0.0 q=1.0 size=N/A time=03:08:59.77 bitrate=N/A speed=0.95x    
[rtsp @ 00000248e765cf00] tcp_read_packet:
[h264 @ 00000248e7d59880] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[rtsp @ 00000248e765cf00] ret=-138 c=24 [$]
rtsp://192.168.15.195:554/streaming/channels/904: Unknown error
[Parsed_fps_0 @ 00000248e7d50e40] Read frame with in pts 1074446100, out pts 28
[Parsed_fps_0 @ 00000248e7d50e40] Dropping frame with pts 28
frame=   28 fps=0.0 q=1.0 size=N/A time=03:08:59.77 bitrate=N/A speed=0.95x    
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=696
[rtsp @ 00000248e765cf00] Sending:
GET_PARAMETER rtsp://192.168.15.195:554/streaming/channels/904 RTSP/1.0

CSeq: 402

User-Agent: Lavf59.20.101

Session: 931848797

Authorization: Digest username="******", realm="709382dda4ccb674edf093d3", nonce="13fca62fc", uri="rtsp://192.168.15.195:554/streaming/channels/904", response="74341df9611f0ac3dc247b402424735b", algorithm="MD5"



--
[NULL @ 00000248e7662640] nal_unit_type: 7(SPS), nal_ref_idc: 3
[NULL @ 00000248e7662640] nal_unit_type: 8(PPS), nal_ref_idc: 3
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=756
[Parsed_fps_0 @ 00000248e7d50e40] Read frame with in pts 1074449070, out pts 28
[Parsed_fps_0 @ 00000248e7d50e40] Dropping frame with pts 28
[Parsed_fps_0 @ 00000248e7d50e40] Read frame with in pts 1074449070, out pts 28
[Parsed_fps_0 @ 00000248e7d50e40] Dropping frame with pts 28
frame=   28 fps=0.0 q=1.0 size=N/A time=03:08:59.77 bitrate=N/A speed=0.949x    
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
frame=   28 fps=0.0 q=1.0 size=N/A time=03:08:59.77 bitrate=N/A speed=0.949x    
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1228
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
[NULL @ 00000248e7662640] reference count 1 overflow
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=804
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=1352
[NULL @ 00000248e7662640] illegal memory management control operation 11
[rtsp @ 00000248e765cf00] tcp_read_packet:
[rtsp @ 00000248e765cf00] ret=1 c=24 [$]
[rtsp @ 00000248e765cf00] id=0 len=836

从根本上说，这似乎是一个失败的问题。如果它崩溃了，我的软件可以检测到它，我可以重新运行它，但是如果它像这样默默地失败了，我需要另一个解决方案。

ffmpeg
rtsp
EN

回答 1

Stack Overflow用户

发布于 2022-09-13 07:34:14

Hi

我建议您使用快照方法，您不需要让流长时间运行一个帧，让python在快照期间(7分钟)睡觉。

也许您适合使用python，这里有一个简单的脚本，他们使用模块皮亚夫完成工作。

安装最新版本的python3，然后用pip安装pyav模块。

代码语言：javascript
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pip install av
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import av
import time
import logging

logging.basicConfig(level=logging.INFO)

SECONDS_TO_SLEEP = 60 * 7

def decode_on_frame_and_save_to_disk(url):
    logging.info(f' Try to connect to {url}')
    # Connect to RTSP URL
    video = av.open(url, 'r')
    # Iter over Packages to get an frame
    for packet in video.demux():
        # When frame is decoded
        for frame in packet.decode():
            # Current datetime
            ts = time.strftime("%Y%m%d-%H%M%S")
            # Log file loctaion of file
            logging.info(f' Save Frame frame-{ts}.jpg')
            # Save Frame into JPEG
            frame.to_image().save(f'frame-{ts}.jpg')
            # Close Connection to RTSP Source
            video.close()
            logging.info(f' Closing Connection')
            # Return because we just need one frame
            return

try:
    logging.info(' Start Snapshot Generator')
    while True:
        decode_on_frame_and_save_to_disk('<your rtsp url>')
        logging.info(f' Awaiting next iteration, sleep for {SECONDS_TO_SLEEP}sec')
        time.sleep(SECONDS_TO_SLEEP)
except Exception as error:
    logging.error(error)
票数 0
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页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/73665349

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