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• FFmpeg takes too much time for generating m3u8 files from a mp4 file (166MB)

  3 août 2021, par Angele

  I am using ffmpeg in nodejs to generate 4 different resolutions (360p, 480p, 720p, 1080p).
I use a AWS lambda for each resolution and the last two take too much time.
I convert a mp4 file which has a size of 166MB into .ts files (with all segments associated)
It takes more than 900 seconds, and that's above the limit for a lambda timeout.

  


  Also my goal is to encode mp4 videos of a maximum size of 4go... and it would be to encode within 900 seconds maximum for each resolution.

  


  I used this website to find some parameters : https://docs.peer5.com/guides/production-ready-hls-vod/

  


  These are my parameters given to ffmpeg :

  


  "ffmpegParams": [
    "-vf",
    "scale=-2:1920",
    "-c:a",
    "aac",
    "-ar",
    "48000",
    "-c:v",
    "h264",
    "-profile:v",
    "main",
    "-crf",
    "20",
    "-sc_threshold",
    "0",
    "-g",
    "48",
    "-keyint_min",
    "48",
    "-hls_time",
    "4",
    "-hls_playlist_type",
    "vod",
    "-b:v",
    "5000k",
    "-maxrate",
    "5350k",
    "-bufsize",
    "7500k",
    "-b:a",
    "192k",
    "-hls_segment_filename",
    "/tmp/1080p_%03d.ts",
    "/tmp/1080p.m3u8"
]


  


  Also I tried with these parameters '-vcodec', 'libx264', '-preset', 'ultrafast' and it made it faster but it is not enough...

  


  Maybe there's something wrong with my command. If someone could maybe enlighten me ? :)

  


  Edit : I ended up using an EC Fargate, perfect for this kind of need.

  


• ffmpeg TCP connection refused trying to download m3u8 file

  21 mai 2021, par Cyeole

  I'm trying to download a .m3u8 stream and convert it to mp4. The code I'm using is :

  


  ffmpeg -i "http://v030.url/s/1/6/8/168192d4db9f6a2d0247784d11bd3aaa/stream/480p/index.m3u8?h=f676f54bc54d0a97a591fb5122c85cfb&e=1621581127" -c copy -bsf:a aac_adtstoasc outputname.mp4


  


  However, I'm getting this error :

  


  [tcp @ 0x7fbdda504900] Connection to tcp://v030.url:80 failed: Connection refused
http://v030.url/s/1/6/8/168192d4db9f6a2d0247784d11bd3aaa/stream/480p/index.m3u8?h=f676f54bc54d0a97a591fb5122c85cfb&e=1621581127: Connection refused


  


  If I directly go to the link, it downloads the .m3u8 file without any problems and I've tried to convert this but it fails to read segments from the site. If I remove the "h=" and "e=" the link doesn't allow me to access the file.

  


  Can someone please guide me on how to download this file in ffmpeg ? It seems like it's protected. Cheers !

  


  I'm using ffmpeg on Mac OS X.

  


• How to assign variable to different extension of files in same directory in bash

  3 mai 2021, par Yacer Azeem

  I have a task to :

  


  

  1. Watch a folder for video files (mp4,mov,mkv etc.)

  


  2. Transform the video files to HLS (480p, 720p, 1080p) using ffmpeg

  


  3. Move these files to a different folder

  


  4. Delete the original files from the watch folder

  


  5. Send an email stating that the following video file was transcoded

  


  


  I want to deal with every .mp4 .mov and .mkv as a variable in bash so that I can perform the above-mentioned tasks.
The folder containing these files are in

  


  /mnt/volume1/videos


  


  directory architecture

  


  /mnt/volum1/videos/sample.mp4
/mnt/volum1/videos/sample.mov
/mnt/volum1/videos/sample.mkv