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• Convert chapters from xml to ffmetadata ?

  3 février 2021, par Soul Spark

  I wanted to add chapters to my encoded mkvs, but I get *.xml files when I download it from online. So is there any way to convert it to FFMETADATAFILE so that when I encode it using ffmpeg I can add chapters to my mkv ??

  



  Sample Input

  



  &lt;?xml version="1.0"?>&#xA;&#xA;&#xA;&#xA;-<chapters>&#xA;&#xA;&#xA;-<editionentry>&#xA;&#xA;<editionflagdefault>1</editionflagdefault>&#xA;&#xA;<editionflaghidden>0</editionflaghidden>&#xA;&#xA;&#xA;-<chapteratom>&#xA;&#xA;<chapteruid>95534594</chapteruid>&#xA;&#xA;<chaptertimestart>00:00:00.000000000</chaptertimestart>&#xA;&#xA;<chaptertimeend>00:01:30.000000000</chaptertimeend>&#xA;&#xA;<chapterflaghidden>0</chapterflaghidden>&#xA;&#xA;<chapterflagenabled>1</chapterflagenabled>&#xA;&#xA;&#xA;-<chapterdisplay>&#xA;&#xA;<chapterstring>Chapter 1</chapterstring>&#xA;&#xA;<chapterlanguage>und</chapterlanguage>&#xA;&#xA;</chapterdisplay>&#xA;&#xA;</chapteratom>&#xA;&#xA;&#xA;&#xA;</editionentry>&#xA;&#xA;</chapters>&#xA;

  



  Sample Output

  



  ;FFMETADATA1
title=bike\\shed
;this is a comment
artist=FFmpeg troll team

[CHAPTER]
TIMEBASE=1/1000
START=0
#chapter ends at 0:01:00
END=60000
title=chapter \#1
[STREAM]
title=multi\
line


  



  By the way I use ffmpeg in cli mode only.

  


• Downloading video & audio segment simultaneously with youtube-dl and ffmpeg

  7 décembre 2020, par Mtaly

  For an online streaming video that I would like to download I have two m3u8 files.

  


  One for the video itself with segment-0.ts to segment-250.ts :

  


  #EXTINF:6.000000,
segment-0.ts
#EXTINF:6.000000,
segment-1.ts
#EXTINF:6.000000,
segment-2.ts
#EXTINF:6.000000,
segment-3.ts
#EXTINF:6.000000,
segment-4.ts


  


  and another m3u8 for the audio segments :

  


  #EXTINF:6.016000,
segment-0.aac
#EXTINF:6.016000,
segment-1.aac
#EXTINF:6.016000,
segment-2.aac
#EXTINF:6.016000,
segment-3.aac
#EXTINF:6.016000,


  


  So, I use youtube-dl and ffmpeg to download the both m3u8 separately then merge them to get the final mp4 (audio+video).

  


  Is there a way to merge the files or use a combined command in the Terminal to automatically download both and merge them ?

  


• Facebook LIVE with ffmpeg error - av_interleaved_write_frame() : Connection reset by peer

  22 décembre 2016, par above14

  I’m trying to stream to Facebook a Live Video from an Amazon EC2 instance (c4.xlarge). I installed ffmpeg and stream with a command like the following

  ffmpeg -re -f concat -i /home/ec2-user/playlist.txt -f lavfi -re -i anullsrc=channel_layout=stereo:sample_rate=44100 -s 854x480 -c:a aac -strict -2 -ar 44100 -vcodec libx264 -f flv "{rtmp_link}"

  Everything works fine. I had LIVE videos that worked for up to 2 days in a row. Sometimes, without a reason, I got one of these videos interrupted with this error message :

   av_interleaved_write_frame(): Connection reset by peer

  I haven’t been able to figure out a reason for this error yet. The funny thing is that maybe I have 3 streaming going on in the same machine at the same time, and just one of them get stopped by this message. Other times this error happens where there’s just one streaming on the EC2 instance.

  Any ideas about how to find a solution ?

  EDIT

  We have installed a newer version of FFMPEG and the error now is more detailed. We have this message

   RTMP send error 104

  I haven’t found a lot about this issue online. Does someone know what error 104 means ?