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• Not able to merge init.mp4 and seg-*.m4s with ffmpeg and python due to its file format difference

  1er février 2023, par XiBBaL

  I'm developing video downloader (only for free videos) for korean anime streaming site https://laftel.net/

  


  I guess laftel.net uses mpeg-dash for their streaming.
I found "init.mp4" file and "segments-number.m4s" files in chrome developer tools.

  


  Code below downloads seg-1.m4s (name of the first segment) to seg-239.m4s (name of the last segment) file and init.mp4 file and it works.

  


  
(Skip the beginning becasue there is a code that collects "Request-URL" for each .m4s files in network stream)


#variable "found" is part of the "Request-URL"

def curl_m4s():
    for i in range(1,240): #number of the .m4s segment file is constant at 239
        vid_url = f"https://mediacloud.laftel.net/{found}/video/avc1/2/seg-{i}.m4s"
        aud_url = f"https://mediacloud.laftel.net/{found}/audio/mp4a/eng/seg-{i}.m4s"
        
        if i < 10: #for single digit num
            os.system(f"curl {vid_url} > {location}/vids/vid00{i}.m4s")
            os.system(f"curl {aud_url} > {location}/auds/aud00{i}.m4s")
            sleep(random.randint(1,3))
            
        elif i < 100: #for double digit num
            os.system(f"curl {vid_url} > {location}/vids/vid0{i}.m4s")
            os.system(f"curl {aud_url} > {location}/auds/aud0{i}.m4s")
            sleep(random.randint(1,3))
            
        else: #for three digit num
            os.system(f"curl {vid_url} > {location}/vids/vid{i}.m4s")
            os.system(f"curl {aud_url} > {location}/auds/aud{i}.m4s")
            sleep(random.randint(1,3))

location = os.getcwd()

os.system(f"curl https://mediacloud.laftel.net/{found}/video/avc1/2/init.mp4 > {location}/vids/vid_init.mp4")
os.system(f"curl https://mediacloud.laftel.net/{found}/audio/mp4a/eng/init.mp4 > {location}/auds/aud_init.mp4")
os.system(f"curl https://mediacloud.laftel.net/{found}/stream.mpd > {location}/stream.mpd")

curl_m4s()
#use curl in cmd and downloads each of the .m4s (001 ~ 239)

    


  


  So in the vids folder i have "init.mp4" for video and "seg-1.m4s seg-239.m4s" for video
and in the auds folder i have "init.mp4" for audio and "seg-1.m4s seg-239.m4s" for audio

  


  Problem is, I cannot merge init file and segment files.
I have no idea about combining .mp4 and .m4s together.
There are a lot of example codes for merging init.m4s + seg-.m4s but I couldn't find init.mp4 + seg-.mp4 codes.

  


  I tried to merge segments together first, like this and it works.

  


  location = os.getcwd()

os.system(f"cd {location}")
os.system("copy /b vid*.m4s vid_full.m4s")


  


  and now, i want to merge init.mp4 becasue it has very much information about whole video files.
But how ??

  


  I tried these and none of them worked (looks like Successfull merge but it do not contain any watchable video)

  


  # vid_full is merged segment files (seg-1.m4s + ... + seg-239.m4s)
 
1. 
os.system("copy /b init.mp4 + vid*.m4s video_full.m4s")
os.system("ffmpeg -i video_full.m4s -c:a copy video_full.mp4")


2. 
os.system("type vid_init.mp4 index.txt > Filename.mp4")


3. 
import os 

os.system("ffmpeg -i vid_full.m4s -c:a copy vid_full.mp4")
os.system("copy /b vid_init.mp4 + vid_full.mp4 VIDEO.mp4")


  


  All problem occurs the format of the init file is .mp4. If it was .m4s I guess I could merge it.

  


  and I guess i must merge init file and segments files together both in .m4s format. Is it right ?
Via ffmpeg, i couldn't encode init.mp4 to init.m4s so this is the problme also.

  


  So, Please help me merge init.mp4 and segments.m4s

  


  All methods are wellcome at least it is based on python.

  


  

  1. I tried to merge init.mp4 + merged_segment.m4s but it failed

  


  2. I tried to convert init.mp4 to init.m4s via ffmpeg but it failed

  


  3. I tried to convert all the segments to .mp4 files and merge into init.mp4 but it failed

  


  


  I want to merge init file and segment files and make playable video.
Pleas Teach me how to do this.

  


  Links below are what I used for my test :

  


  [Laftel.net URL]
https://laftel.net/player/40269/46123

  


  [Request URL for init.mp4 (video)]
https://mediacloud.laftel.net/2021/04/46773/v15/video/dash/video/avc1/2/init.mp4

  


  [Request URL for init.mp4 (audio)]
https://mediacloud.laftel.net/2021/04/46773/v15/video/dash/audio/mp4a/eng/init.mp4

  


  [Request URL for seg-1.m4s (video)]
https://mediacloud.laftel.net/2021/04/46773/v15/video/dash/video/avc1/2/seg-1.m4s

  


  [Request URL for seg-1.m4s (audio)]
https://mediacloud.laftel.net/2021/04/46773/v15/video/dash/audio/mp4a/eng/seg-1.m4s

  


• pod mobile-ffmpeg-full (4.2.2) : installation issues, does anyone know how to fix this error ?

  11 janvier 2020, par João Paulo

  COMMAND USED
  $ pod install

  ERROR RESULT
  Analyzing dependencies
  Downloading dependencies
  Installing mobile-ffmpeg-full (4.2.2)

  [!] Error installing mobile-ffmpeg-full
  [!] /usr/bin/curl -f -L -o /var/folders/vn/r7ghkzmn67114_hn0knf3jt30000rs/T/d20200111-2077-qf6xcl/file.zip https://github.com/tanersener/mobile-ffmpeg/releases/download/v4.2.2/mobile-ffmpeg-full-4.2.2-ios-framework.zip —create-dirs —netrc-optional —retry 2

  % Total % Received % Xferd AverageDload SpeedUpload TimeTotal TimeSpent TimeLeft CurrentSpeed

  100 633 0 633 0 0 1063 0 — :— :— — :— :— — :— :— 1063

  3 143M 3 5380k 0 0 14074 0 2:57:36 0:06:31 2:51:05 0

  curl : (56) LibreSSL SSL_read : SSL_ERROR_SYSCALL, errno 54

  FORM THAT WAS WRITTEN IN THE PODFILE
  pod ’mobile-ffmpeg-full’, ’ > 4.2.2’

• Evolution #4789 (Nouveau) : Fonction recuperer_url et header spécifique

  22 mai 2021, par Eric Lupinacci

  Hello,

  Je m’essaye à l’API de Discourse.
  Je suis confronté à un souci avec recuperer_url().
  J’aurais besoin de passer une api key et un username pour l’authentification de la requête et malheureusement, cette API demande à ce que ces données soient fournies non pas dans l’URL mais dans le header.

  En curl ça donne par exemple :

  curl -X GET "http://127.0.0.1:3000/admin/users/list/active.json" \
  
   H "Api-Key : 714552c6148e1617aeab526d0606184b94a80ec048fc09894ff1a72b740c5f19" \
  
   H "Api-Username : system" 
  

  J’ai regardé la fonction recuperer_url() et a priori la construction final du header se fait dans lancer_requete().
  Et malheureusement il n’y a pas de possibilité de passer des entêtes spécifiques qui viendraient compléter celle par défaut.

  Si il n’y a pas de contre-indication ça serait bien de faire évoluer recuperer_url, init_http et lancer_requete en passant un paramètre supplémentaire à la fin des prototypes qui serait sous la forme d’un tableau [champ-entete] = valeur.
  J’ai une PR prête qui fonctionne et que je vais proposer pour une possible intégration en 4.0.