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• ffmpeg HLS transcoding and chunks upload to remote server

  25 mai 2020, par Georgе Stoyanov

  I am trying to create a so called origin server for storing the hls chunks and the manifest file on a remote server. The sending machine running ffmpeg is with IP : 192.168.178.50 and the web server which has to store both the HLS chunks and the manifest file is with IP : 192.168.178.100. My ffmpeg transcoding command line is :

  



  $ ffmpeg -i 01_llama_drama_1080p.mp4 -profile:v high -level 5.2 -s 1920x1080 -strict -2 -start_number 0 -hls_time 6 -hls_list_size 0 -f hls http://192.168.178.100/hls/test.m3u8

ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '01_llama_drama_1080p.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2013-02-08 18:56:45
  Duration: 00:01:30.00, start: 0.000000, bitrate: 3120 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 2925 kb/s, 24 fps, 24 tbr, 48 tbn, 48 tbc (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 191 kb/s (default)
    Metadata:
      creation_time   : 2013-02-08 18:56:46
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
[libx264 @ 0x249b880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x249b880] profile High, level 5.2
Output #0, hls, to 'http://185.71.86.48/hls/test.m3u8':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    encoder         : Lavf56.40.101
    Stream #0:0(und): Video: h264 (libx264), yuv420p, 1920x1080, q=-1--1, 24 fps, 90k tbn, 24 tbc (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
      encoder         : Lavc56.60.100 libx264
    Stream #0:1(und): Audio: aac, 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2013-02-08 18:56:46
      handler_name    : IsoMedia File Produced by Google, 5-11-2011
      encoder         : Lavc56.60.100 aac
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[hls @ 0x24997e0] Cannot use rename on non file protocol, this may lead to races and temporarly partial files


  



  But no matter what method I am using I got in the access log of my apache web server the following errors :

  



  $ tail -f /var/log/apache2/access.log

192.168.178.50 - - [27/Jun/2017:10:40:45 +0000] "POST /hls/test.m3u8 HTTP/1.1" 404 469 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:40:45 +0000] "POST /hls/test12.ts HTTP/1.1" 404 469 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:40:46 +0000] "POST /hls/test.m3u8 HTTP/1.1" 404 469 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:40:46 +0000] "POST /hls/test13.ts HTTP/1.1" 404 469 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:40:47 +0000] "POST /hls/test.m3u8 HTTP/1.1" 404 469 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:46:44 +0000] "POST /hls/test0.ts HTTP/1.1" 404 468 "-" "Lavf/56.40.101"
192.168.178.50 - - [27/Jun/2017:10:46:51 +0000] "POST /hls/test.m3u8 HTTP/1.1" 404 469 "-" "Lavf/56.40.101"


  



  These are the supported methods on my web server :

  



  $ nmap -Pn -p 80 --script http-methods 192.168.178.100

Starting Nmap 7.01 ( https://nmap.org ) at 2017-06-27 10:47 UTC
Nmap scan report for 192.168.178.100
Host is up (0.0015s latency).
PORT   STATE SERVICE
80/tcp open  http
| http-methods:
|_  Supported Methods: GET HEAD POST OPTIONS

Nmap done: 1 IP address (1 host up) scanned in 0.34 seconds


  



  My web server is running apache2 on Ubuntu 16.04 :

  



  $ apache2 -v

Server version: Apache/2.4.18 (Ubuntu)
Server built:   2017-06-26T11:58:04


  



  So according to the access.log file no matter what method I define in the ffmpeg command line it is always trying to upload the chunks using HTTP POST, but the latter is already supported and the directory I am directing the chunks has even 777 rights. Am I missing something here ?

  


• How to create a live stream in dash format from mp4 file or m3u8 list ? (ffmpeg)

  30 juin 2017, par jorge.luengo

  I have been trying different ways of running dash live streams from mp4 or m3u8 but none of them worked fined. I want to use ffmpeg because of my server conditions.
  This command has been the one that did something but it didn’t work as I expected :

  ffmpeg-3.3.2-64bit-static/ffmpeg -i reencoded24eng.mp4 -vf yadif=0 -r 30 -vcodec libx264 -keyint_min 60 -g 60 -b:v 1000k -ac 2 -strict 2 -acodec aac -ab 64k -map 0:v -map 0:a -f dash -min_seg_duration 2000  -use_template 1 -use_timeline 1 -init_seg_name init-\$RepresentationID\$.mp4 -dash 1  -media_seg_name test-\$RepresentationID\$-\$Number\$.mp4 test.mpd

  The error that the dash-if conformance tool provides is the following one :

  Start XLink resolving

  XLink resolving successful

  Start MPD validation

  MPD validation successful - DASH is valid !

  Start Schematron validation

  location="/[local-name()=’MPD’ and namespace-uri()=’urn:mpeg:dash:schema:mpd:2011’]/[local-name()=’Period’ and >namespace-uri()=’urn:mpeg:dash:schema:mpd:2011’]">
  If the MPD is dynamic the Period element shall have an id.

  location="/[local-name()=’MPD’ and namespace-uri()=’urn:mpeg:dash:schema:mpd:2011’]/[local-name()=’Period’ and >namespace-uri()=’urn:mpeg:dash:schema:mpd:2011’]/*local[1]">
  Common attributes for AdaptationSet and Representation shall either be in >one of the elements but not in both.

  Schematron validation not successful - DASH is not valid !

  BUILD SUCCESSFUL
  Total time : 5 seconds

  Could anyone help me with this ?

• Efficiently write a movie directly from np.array using pipes

  16 juin 2017, par Matt Billman

  I have a 4D numpy array of movie frames. I’m looking for a function to write them to a movie, at a given framerate. I have FFMPEG installed on my OS, and as I can see from these answers, the most efficient way to do so is via pipes.

  However, I have very little experience using pipes, and the explanations in the link above make little sense to me. Furthermore, very few of the answers seem actually implement pipes, and the one that does uses mencoder, not FFMPEG. I am relatively inexperienced with FFMPEG, so am not sure how to modify the command string from the mencoder answer to make it work in FFMPEG.

  WHAT I WOULD LIKE :

  A function of the following form :

  animate_np_array(4d_array, framerate) -> output.mp4 (or other video codec)

  Which implements pipes to send frames one after the other to FFMPEG, and which I can copy-paste into my existing code.

  Furthermore, it is absolutely necessary that this function never actually plots any of the frames, as calls to the matplotlib.imshow() function (as I have most typically seen used) slow things down considerably.