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• ffmpeg draw text filter - Invalid argument when sending url as a text

  2 novembre 2017, par emanaltal

  I’m trying to write a ffmpeg command to live stream a .ts file & write the same url as text overlay through python subprocess

  subprocess.call(’ffmpeg -i %s -vframes 1 -q:v 1 -vf "scale=720:480" -vf drawtext="fontfile=/usr/share/fonts/truetype/freefont/FreeSerif.ttf : text=%s : x=500 :y=500" %s.jpg -hide_banner’%(url,url,filename),shell = True)

  URL example : http://orbitiptv.com:2500/live/99068566091761/99068566091761/6587.ts

  I get an error
  Error reinitializing filters !
  Failed to inject frame into filter network : Invalid argument

  The issue is related to url having special characters, when i run it directly in cmd i can skip : with \
  but how to implement that with python ?

• How can i get constant output bitrate for fluent-Ffmpeg conversion of m3u8 video stream to audio stream

  24 octobre 2019, par Rushikesh Phalke

  I am using fluent-FFmpeg to convert m3u8 video stream to audio stream. the audio stream I am getting as output has a variable bitrate. How can I achieve getting constant bitrate instead of a variable bitrate ?

  I have tried providing

  .addOption(’-b:a 48k’)

  .addOption(’-bufsize 48k’)

  to keep constant bitrate of 48kbps. But that didn’t work.

  Here is the code sample :

  const ffmpeg = require('fluent-ffmpeg');
  
  const { Transform } = require('stream');
  
  
  
  let dest = new Transform({
  
      transform: (chunk, enc, next) => {
  
          //chunk duration
  
          next(null, chunk);
  
      }
  
  }).on('data', () => {});
  
  
  
  
  
  let m3u8_url = 'https://fuel-streaming-prod01.fuelmedia.io/v1/sem/40f15d3b-689f-48a5-9c61-a4f9583ed619.m3u8';
  
  
  
  let command = ffmpeg()
  
      .format('flac') // required for working with streams
  
      .on('start', function() {
  
          console.log('ffmpeg : processing Started');
  
      })
  
      .on('progress', (progress) => {
  
          console.log('ffmpeg : Processing');
  
      })
  
      .on('end', () => {
  
          console.log('ffmpeg : Processing finished !');
  
      })
  
      .on('error', (err) => {
  
          console.log('ffmpeg : ffmpeg error :' + err.message);
  
      })
  
      //.addOption('-b:a 48k')
  
      //.addOption('-bufsize 48k')
  
      .output(dest) //transform stream
  
      .audioBitrate('48k')
  
      .audioCodec('flac') // needed for getting proper metadata
  
  
  
  command.run();

• ffmpeg won't recognize x265 options [closed]

  29 octobre 2017, par cdpp

  I am trying to use ffmpeg’s built-in x265 library to process .VOB files through h.265codec.

  What I understood from the ffmpeg documentation was that :

  -c:v libx265 tells ffmpeg to use the h.265 codec for video streams

  -x265-params passes options to x265 encoder instead of ffmpeg

  But whenever try to run the command, ffmpeg doesn’t seem to recognize/pass the options to x265.

  It gives the error

  Unrecognized option '-y4m'.<br />
Error splitting the argument list: Option not found

  Why is this ?

  Here’s the command (edited spacing) :

  C:\ffmpeg (20170123-e371f03-win64-static)\bin> 
  
     ffmpeg -i concat:'input1.VOB'\'input.VOB'
  
     -map 0:v -map 0:a -r 24000/1001 -f yuv4mpegpipe 
  
     -c:v libx265 -x265-params 
  
     --y4m --fps 24000/1001 -p veryslow --open-gop --bframes 16 
  
     --b-p yramid --bitrate 2500 --rect --amp --aq-mode 3 --no-sao --qcomp 0.75 
  
     --no-strong -intra-smoothing --psy-rd 1.6 --psy-rdoq 5.0 --rdoq-level 1 
  
     --tu-inter-depth 4 --tu-intra-depth 4 --ctu 32 --max-tu-size 16 --pass 1 
  
     --slow-firstpass --stats v. stats --sar 1 --range full 'E:\output.hevc'
  
  
  
  
  
  
  
  
  
  ffmpeg version N-83195-ge371f03 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --e
  
  nable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --
  
  enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv
  
  --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-li
  
  bfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug -
  
  -enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enabl
  
  e-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-li
  
  bsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolam
  
  e --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx
  
   --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable
  
  -libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --ena
  
  ble-zlib
  
    libavutil      55. 44.100 / 55. 44.100
  
    libavcodec     57. 75.100 / 57. 75.100
  
    libavformat    57. 63.100 / 57. 63.100
  
    libavdevice    57.  2.100 / 57.  2.100
  
    libavfilter     6. 69.100 /  6. 69.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  Unrecognized option '-y4m'.
  
  Error splitting the argument list: Option not found