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• How to fix EXT-X-MAP:URI in m3u8 when specifying absolute hls_fmp4_init_filename using ffmpeg ?

  29 février 2020, par Ryan

  Today I found this blog post teaching me about fragmented mp4s (fmp4s).

  Using the ffmpeg docs, I’ve made great progress.

  I run this :

  '/usr/bin/ffmpeg' '-y' '-i' '/myproject/storage/app/sample_media/2020-02-27/Sample Videos 5.mp4' \
  
  '-c:v' 'libx264' '-s:v' '1920x1080' \
  
   '-crf' '20' '-sc_threshold' '0' '-g' '48' '-keyint_min' '48' \
  
  '-hls_list_size' '0' '-hls_time' '10' '-hls_allow_cache' '0' '-b:v' '4889k' \
  
  '-maxrate' '5866k' '-hls_segment_type' 'fmp4' \
  
  '-hls_fmp4_init_filename' '/myproject/public/storage/000000002/init.mp4' \
  
  '-hls_segment_filename' '/myproject/public/storage/000000002/list_1080p_%04d.m4s' \
  
  '-hls_key_info_file' '/myproject/hls_hls.keyInfo' '-strict' '-2' '-threads' '12' \
  
  '/myproject/public/storage/000000002/list_1080p.m3u8'

  And then I use hls.js on my webpage to try to show the video.

  Initially, it won’t load.

  But then I can get the video to load properly if I refresh the page after making this edit to list_1080p.m3u8 :

  Change from :

  #EXT-X-MAP:URI="/myproject/public/storage/000000002/init.mp4"

  To :

  #EXT-X-MAP:URI="init.mp4"

  How can I change my ffmpeg command so that it knows the absolute path of where to save the init.mp4 but also knows to write in the m3u8 only the filename init.mp4 without any path ?

  (I’ve tried using -hls_fmp4_init_filename init.mp4 without the abosolute path, but then it creates the init.mp4 at the root, which also doesn’t work. I need each video’s init.mp4 to be in its own folder.)

• FFMPEG not found error while attempting to implement ffmpeg into discord bot

  17 février 2020, par Ravenr_

  While implementing a music feature into my node.js discord.js discord bot, I got an error claiming that it cant find FFMPEG. I reinstalled ffmpeg 3 times to no avail.

  This is the full error

  2020-02-17T01:48:30.403766+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: Error: FFMPEG not found
  
  2020-02-17T01:48:30.403797+00:00 app[worker.1]:     at Function.selectFfmpegCommand (/app/node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js:46:13)
  
  2020-02-17T01:48:30.403798+00:00 app[worker.1]:     at new FfmpegTranscoder (/app/node_modules/prism-media/src/transcoders/ffmpeg/Ffmpeg.js:7:37)
  
  2020-02-17T01:48:30.403798+00:00 app[worker.1]:     at new MediaTranscoder (/app/node_modules/prism-media/src/transcoders/MediaTranscoder.js:10:19)
  
  2020-02-17T01:48:30.403799+00:00 app[worker.1]:     at new Prism (/app/node_modules/prism-media/src/Prism.js:5:23)
  
  2020-02-17T01:48:30.403799+00:00 app[worker.1]:     at new VoiceConnection (/app/node_modules/discord.js/src/client/voice/VoiceConnection.js:46:18)
  
  2020-02-17T01:48:30.403800+00:00 app[worker.1]:     at /app/node_modules/discord.js/src/client/voice/ClientVoiceManager.js:63:22
  
  2020-02-17T01:48:30.403800+00:00 app[worker.1]:     at new Promise (<anonymous>)
  
  2020-02-17T01:48:30.403801+00:00 app[worker.1]:     at ClientVoiceManager.joinChannel (/app/node_modules/discord.js/src/client/voice/ClientVoiceManager.js:45:12)
  
  2020-02-17T01:48:30.403801+00:00 app[worker.1]:     at VoiceChannel.join (/app/node_modules/discord.js/src/structures/VoiceChannel.js:130:30)
  
  2020-02-17T01:48:30.403802+00:00 app[worker.1]:     at Object.execute (/app/commands/play.js:31:64)
  
  2020-02-17T01:48:30.404044+00:00 app[worker.1]: (node:4) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 2)
  
  2020-02-17T01:48:30.404052+00:00 app[worker.1]: (node:4) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
  
  </anonymous>

  This is the code

  const ytdl = require("ytdl-core");
  
  module.exports = {
  
      name: 'play',
  
      description: 'initiates music methods of the bot',
  
      execute(msg, args){
  
          var servers = {};
  
  
  
          function play(connection, msg){
  
              var server = servers[msg.guild.id];
  
  
  
              server.dispatcher = connection.playStream(ytdl(server.queue[0], {filter: "audioonly"}));
  
              server.queue.shift();
  
  
  
              server.dispatcher.on("end", function(){
  
                  if(server.queue[0]){
  
                      play(connection, msg);
  
                  }else{
  
                      connection.disconnect();
  
                  }
  
              });
  
  
  
  
  
          }
  
          if(!args[1]) return msg.channel.send("you need to provide a link");
  
          if(!msg.member.voiceChannel) return msg.channel.send("You must be in a voice channel to use this feature");
  
          if(!servers[msg.guild.id]) servers[msg.guild.id] = {
  
              queue: []
  
          }
  
          var server = servers[msg.guild.id];
  
          server.queue.push(args[1]);
  
          if(!msg.guild.voiceConnection) msg.member.voiceChannel.join().then(function(connection){
  
              play(connection, msg);
  
          })
  
      }
  
  }

  I have no idea what the issue is. I am using heroku to deploy if that matters at all.

• FFMPEG "Segmentation fault" with stream source and watermark

  4 mars 2020, par Magikey

  I use release : 4.2.2 (static) from "https://johnvansickle.com/ffmpeg/"

  Final code will be on "Amazon AWS lambda"

  Goal : use a url stream and add watermak

  Link to video : ​https://feoval.fr/519.mp4

  Link to Watermak : ​https://feoval.fr/watermark.png

  ./ffmpeg -i "https://feoval.fr/519.mp4" -i "./watermark.png" -filter_complex "overlay=W-w-10:H-h-10:format=rgb" -f "mp4" -movflags "frag_keyframe+empty_moov" -pix_fmt "yuv420p" test.mp4

  return "Segmentation fault"

  I have the same error on my computer and on AWS Lambda server

  ./ffmpeg -i "https://feoval.fr/519.mp4" -f "mp4" -movflags "frag_keyframe+empty_moov" -pix_fmt "yuv420p" test.mp4

  work (but not watermak)

  ./ffmpeg -i "./519.mp4" -i "./watermark.png" -filter_complex "overlay=W-w-10:H-h-10:format=rgb" -f "mp4" -movflags "frag_keyframe+empty_moov" -pix_fmt "yuv420p" test.mp4

  work (but not with stream)

  Thanks you very much !

  Logs for the first case who return "Segmentation fault" :

  ...
  
  Stream mapping:
  
  Stream #0:0 (h264) -> overlay:main (graph 0)
  
  Stream #1:0 (png) -> overlay:overlay (graph 0)
  
  overlay (graph 0) -> Stream #0:0 (libx264)
  
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, ? for help
  
  [libx264 @ 0x742e480] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x742e480] profile High, level 3.1, 4:2:0, 8-bit
  
  [libx264 @ 0x742e480] 264 - core 159 r2991 1771b55 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - ​http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'test.mp4':
  
  Metadata:
  
  major_brand : mp42
  
  minor_version : 1
  
  compatible_brands: isommp41mp42
  
  encoder : Lavf58.29.100
  
  Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 480x848, q=-1--1, 30 fps, 15360 tbn, 30 tbc (default)
  
  Metadata:
  
  encoder : Lavc58.54.100 libx264
  
  Side data:
  
  cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
  
  Metadata:
  
  creation_time : 2020-01-13T08:54:26.000000Z
  
  handler_name : Core Media Audio
  
  encoder : Lavc58.54.100 aac
  
  Segmentation fault (core dumped)