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• Why does my nginx endpoint streaming audio via ffmpeg fail with "An unexpected TLS packet was received"

  6 décembre 2020, par rajaman0

  I'm using nginx to proxy requests to a flask/gunicorn API. For most of my endpoints, it works perfectly - however, I have one endpoint which serves an audio response (through ffmpeg) which doesn't seem to work no matter what I try. Running everything through docker.

  


  Here's my nginx config :

  


  server {
  listen $PORT;
  root /usr/share/nginx/html;
  index index.html index.html;

  access_log /var/log/nginx/reverse-access.log;
  error_log /var/log/nginx/reverse-error.log;

  location / {
    try_files $uri /index.html =404;
  }

  location /api/stream_audio_file {
    proxy_pass          http://backend;
    proxy_http_version  1.1;
    proxy_set_header    Connection "keep-alive";
    proxy_set_header    Host $host;

    proxy_set_header    X-Real-IP $remote_addr;
    proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header    X-Forwarded-Host $server_name;
  }


  


  Here's the core of the python code for http://backend/api/stream_audio_file (run through flask, gunicorn)

  


  ffmpeg_options =  ['-i', 'https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3']
ffmpeg_options += ["-f", "mp3"]
ffmpeg_options += ["-to", '00:00:02.000']
ffmpeg_options += ["-vn"]
ffmpeg_options += ["-ab",  "256k"]
ffmpeg_options += ["-strict", "-2"]
ffmpeg_options += ["-loglevel", "trace"]
p = Popen(["ffmpeg"] + ffmpeg_options + ["-"],
                      stdout=PIPE)
max_bytes = 256000
output = p.stdout.read(max_bytes)
return Response(output, headers={
     "Content-Type": "audio/mp3",
     "icy-name": yt_info['title'].encode('latin-1', 'ignore'),
     "icy-bitrate": "256",
     "ice-audio-info": "bitrate=256",
     "Cache-Control": "no-cache"
})


  


  When I test out this endpoint, I've pasted the full ffmpeg logs here : https://pastebin.com/wMMpmL6M
Of import, it seems to fetch the mp3 url appropriately but fails with error :

  


  [tls @ 0x555bf3011a80] An unexpected TLS packet was received.
https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3: I/O error
[out_0_0 @ 0x555bf302ab00] EOF on sink link out_0_0:default.
No more output streams to write to, finishing.


  


  I've tried quite a few things :

  


  

  1. This endpoint works without nginx. I tried querying just the endpoint running w/ just gunicorn, and responses are streamed back correctly. Thus the error HAS to be nginx related ?

  


  2. The error being TLS related is confusing - I've tried setting up nginx w/ ssl on and adding certs, but that doesn't help / change the error in any way.

  


  3. I've tried playing around with headers in both nginx and on the python side, following some of the examples here : https://www.nginx.com/resources/wiki/start/topics/examples/x-accel/. Doesn't work.

  


  4. Response(stream_with_context(..) in flask doesn't work either.

  


  5. Don't know much about nginx, but tried some other suggestions e.g. buffering / no buffering through nginx, etc, nothing seems to work :(.

  


  6. When I ssh into my docker container, and run the same ffmpeg command ffmpeg -i https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3 -f mp3 -to 00:00:02.000 -vn -ab 256k -strict -2 -loglevel trace outside of the request context, it works !

  


  7. Tried compiling ffmpeg with both openssl and gnutls, neither works. However : the openssl version fails w/
tls @ error:1408F1BB:SSL routines:ssl3_get_record:bad record type instead.

  


  


  Please let me know what other debugging info would be helpful / if anyone has any hypothesis I can test out.

  


• FFMPEG, macOS Catalina : "ffmpeg stderr : /private/tmp/com.apple.launchd.ID/org.macosforge.xquartz:0 : Operation not supported on socket"

  11 février 2021, par Bogdan Slyusarenko

  I'm trying to record selenium test run with FFMPEG, for automation testing of web extensions (selenium+js/ts).
FFMPEG initiated by command :

  


      const { spawn } = require("child_process");
        ffmpeg = spawn("ffmpeg", [
          "-x265-params",
          "-f",
          "xcbgrab", 
          "-video_size",
          "1280x1024", 
          "-i",
          process.env.DISPLAY, // "/private/tmp/com.apple.launchd.ID/org.macosforge.xquartz:0"
          "-loglevel",
          "debug", 
          "-y", 
          "-pix_fmt",
          "yuv420p",
          videoPath, 
        ]);


  


  Return constantly error,related to process.DISPLAY, I'm not sure why it's so :

  


      ffmpeg stderr: /private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0: Operation not supported on socket


  


  Full debug login is :

  


  ffmpeg stderr: ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
ffmpeg stderr:   built with Apple clang version 12.0.0 (clang-1200.0.32.28)
ffmpeg stderr:   configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
ffmpeg stderr: libavutil      56. 51.100 / 56. 51.100
ffmpeg stderr:   libavcodec     58. 91.100 / 58. 91.100
ffmpeg stderr:   libavformat    58. 45.100 / 58. 45.100
ffmpeg stderr:   libavdevice    58. 10.100 / 58. 10.100
ffmpeg stderr:   libavfilter     7. 85.100 /  7. 85.100
ffmpeg stderr:   libavresample   4.  0.  0 /  4.  0.  0
ffmpeg stderr:   libswscale      5.  7.100 /  5.  7.100
ffmpeg stderr:   libswresample   3.  7.100 /  3.  7.100
ffmpeg stderr:   libpostproc    55.  7.100 / 55.  7.100
ffmpeg stderr: Splitting the commandline.
ffmpeg stderr: Reading option '-x265-params' ...
ffmpeg stderr: matched as AVOption 'x265-params' with argument '-f'.
ffmpeg stderr: Reading option 'xcbgrab' ...
ffmpeg stderr: matched as output url.
ffmpeg stderr: Reading option '-video_size' ...
ffmpeg stderr: matched as AVOption 'video_size' with argument '1280x1024'.
ffmpeg stderr: Reading option '-i' ... matched as input url with argument '/private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0'.
ffmpeg stderr: Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
ffmpeg stderr: Reading option '-y' ...
ffmpeg stderr: matched as option 'y' (overwrite output files) with argument '1'.
ffmpeg stderr: Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'yuv420p'.
ffmpeg stderr: Reading option '/Volumes/MacHD2/Upprojects/TEST/log/Checkout-Google.com-Search-on-Google.mp4' ... matched as output url.
ffmpeg stderr: Finished splitting the commandline.
ffmpeg stderr: Parsing a group of options: global .
ffmpeg stderr: Applying option loglevel (set logging level) with argument debug.
ffmpeg stderr: Applying option y (overwrite output files) with argument 1.
ffmpeg stderr: Successfully parsed a group of options.
ffmpeg stderr: Parsing a group of options: input url /private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0.
ffmpeg stderr: Successfully parsed a group of options.
ffmpeg stderr: Opening an input file: /private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0.
ffmpeg stderr: [NULL @ 0x7fcf80016800] Opening '/private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0' for reading
ffmpeg stderr: [file @ 0x7fcf7f507a00] Setting default whitelist 'file,crypto,data'
ffmpeg stderr: /private/tmp/com.apple.launchd.W851FkeNXz/org.macosforge.xquartz:0: Operation not supported on socket



  


  Any feedback appreciated

  


• Flac-in-mp4 draft v0.0.1.

  4 octobre 2016, par Ralph Giles

  Flac-in-mp4 draft v0.0.1.
  Draft updates in response to feedback from Timothy B. Terriberry
  
  and Jean-Yves Avenard.
  Signed-off-by : Erik de Castro Lopo <erikd@mega-nerd.com>
  

  • [DH] doc/isoflac.txt