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• FFMPEG Batch Copy Metadata from "Folder1File1.mp3" to "Folder2File1.mp3" in different folders

  27 février 2020, par Vektorz

  I have two separate files in separate folders with the same name and I would like to transfer the metadata from the file in "folder1" to "folder2".
  Then I would like to add a whole bunch of files fitting this same format and batch transfer all of the metadata information.

  From a stack exchange thread I’ve tried :

  "The following script will loop through the the files in one directory, find corresponding files in a second directory and then combine these two files into a third output directory
  
  
  
  dir1=FIRST DIRECTORY
  
  dir2=SECOND DIRECTORY
  
  output=OUTPUT DIRECTORY
  
  for file in $(ls $dir1); do
  
    ffmpeg -i "$dir1/$file" -i "$dir2/$file" -map 1 -c copy \
  
     # copies all global metadata from in0.mkv to out.mkv  
  
     -map_metadata 0 \
  
     # copies video stream metadata from in0.mkv to out.mkv
  
     -map_metadata:s:v 0:s:v \
  
     # copies audio stream metadata from in0.mkv to out.mkv
  
     -map_metadata:s:a 0:s:a \
  
     "$outdir/$file"
  
  done"

  But for the life of me I cannot get this to work properly and it is a bit overkill. He continues on saying :

  If you want to make something reuseable you could put this in a script with the following header (remove the assignment for dir1, dir2 and output in the script above). And then call it as script.sh dir1 dir2 outdir
  
  
  
  #!/bin/bash
  
  set -x errexit # exit immediately on error
  
  dir1="$1"
  
  dir2="$2"
  
  output="$3"

  And I am totally lost. Can someone please help me to get this to work and walk me through it a bit easier as I’m fairly inexperienced with code/FFMPEG.

  Thank you.

• how can I play ffmpeg codecs not supported by MedicaPlayer ? [closed]

  1er septembre 2011, par Jun

  Currently, I'm using MediaPlayer to play mp4, 3gp videos and it works as it should do but now I need to play ffmpeg codecs too.

  In this case, do I have to develop my video player or is there any players from 3rd parties ?

  Thanks in advance.

• FLV Video packets sent over rtmp streamed with ffmpeg vs OBS

  15 septembre 2018, par user3290525

  I’m using node-media-server npm module to host my rtmp server. I captured the video packets from the server and I noticed that video packets streamed with ffmpeg -f gdigrab -offset_x 1920 -framerate 60 -video_size hd1080 -i desktop -crf 0 -preset ultrafast -f flv rtmp://localhost starts with

  • 2200 0085 or
  • 2200 0084 and
  • 1200 0085, and
  • the very first packet starts with 1200 0084.

  And when I stream to my rtmp server with OBS, I capture video packets that start with

  • 2701 0000 0000 00 and
  • the very first packet starts with 1701 0000 0000.

  What I’m trying to do is that I capture these packets, store it, and send these packets to ’players’ when they connect to my server. I got it working with the packets captured with ffmpeg AND video converted to flv format with ffmpeg.

  However the players don’t play the video packets streamed with OBS. However, the player does play well when my rtmp server is just ’relaying’ what it receives instead of ’replaying’ the captured packets. But the audio plays nicely.

  I would like to know what those starting hexadecimals represent (whether it indicates that OBS is not using the flv file format).