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• Trying to identify global metadata

  29 mai 2021, par the_steve_randolph

  I am pretty new to ffmpeg and using it to convert/change a large number of video files. I typically use VLC to find out some (all ?) of the information that I am interested in changing. But, one piece of information I can't seem to identify.

  


  I know that within a video file, each audio and video track have titles that I can change with ffmpeg. Also, I know that I can change the metadata tag "title" that would seem to encompass the entire file. This "title" value is displayed on the top line in VLC and displays in Windows Explorer in the "Title" column. This seems to be the same tag when you right-click on the file, click the "Details" tab, and, look at the "Title" tag under "Description".

  


  But, in some video files, in VLC I click on "Playback" and then "Title", there is different "title" information. Most of the time it is blank, but, other times there is one or two names that indicates it came from the "title" information of a DVD. That is, a DVD that has multiple titles (different/separate movies on the same disc). Well, I want to erase or change that "title" information, but, I cannot seem to determine where/how in ffmpeg to access it. This information is not shown with the "ffmpeg -i file.mp4" or "ffprobe -1 file.mp4".

  


  Since this "title" information is not directly related to a specific video track, I am assuming that it fits under the category of "global" metadata. Googling "ffmpeg global metadata tags", I can find some of the tags I typically change (i.e "frame height" and "frame width"), as well as the "title" that is the Windows Explorer "title" column. But, none of those search results mention this other "title" information/tag, or, that a DVD can have multiple titles that show up when converted to a MP4/MKV and viewed it in VLC.

  


  So, WTH is that tag name and is it something that ffmpeg can see and/or change ?

  


• About Soundcloud scraping for uploading music to telegram group

  16 juin 2021, par so sa

  I am trying to automatically download the new uploaded file from the below soundcloud link and upload it to a telegram group :

  


  https://soundcloud.com/radio-hamrah-1

  


  so I have googled the :

  


  


  python script to download from soundcloud and import to telegram
group

  


  


  and tried the scdl python module by its instruction, but when I have tried its on this colab page I get this error :

  


  !pip3 install git+https://github.com/flyingrub/scdl
!scdl -l https://soundcloud.com/pandadub/sets/the-lost-ship --download-archive archive.txt -c

Collecting git+https://github.com/flyingrub/scdl
  Cloning https://github.com/flyingrub/scdl to /tmp/pip-req-build-0g64ql2f
  Running command git clone -q https://github.com/flyingrub/scdl /tmp/pip-req-build-0g64ql2f
Requirement already satisfied (use --upgrade to upgrade): scdl==1.6.12 from git+https://github.com/flyingrub/scdl in /usr/local/lib/python3.7/dist-packages
Requirement already satisfied: docopt in /usr/local/lib/python3.7/dist-packages (from scdl==1.6.12) (0.6.2)
Requirement already satisfied: mutagen in /usr/local/lib/python3.7/dist-packages (from scdl==1.6.12) (1.45.1)
Requirement already satisfied: termcolor in /usr/local/lib/python3.7/dist-packages (from scdl==1.6.12) (1.1.0)
Requirement already satisfied: requests in /usr/local/lib/python3.7/dist-packages (from scdl==1.6.12) (2.23.0)
Requirement already satisfied: clint in /usr/local/lib/python3.7/dist-packages (from scdl==1.6.12) (0.5.1)
Requirement already satisfied: chardet<4,>=3.0.2 in /usr/local/lib/python3.7/dist-packages (from requests->scdl==1.6.12) (3.0.4)
Requirement already satisfied: urllib3!=1.25.0,!=1.25.1,<1.26,>=1.21.1 in /usr/local/lib/python3.7/dist-packages (from requests->scdl==1.6.12) (1.24.3)
Requirement already satisfied: idna<3,>=2.5 in /usr/local/lib/python3.7/dist-packages (from requests->scdl==1.6.12) (2.10)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python3.7/dist-packages (from requests->scdl==1.6.12) (2021.5.30)
Requirement already satisfied: args in /usr/local/lib/python3.7/dist-packages (from clint->scdl==1.6.12) (0.1.0)
Building wheels for collected packages: scdl
  Building wheel for scdl (setup.py) ... done
  Created wheel for scdl: filename=scdl-1.6.12-cp37-none-any.whl size=19143 sha256=27ca560a7f3947830289d0df167db84137d1554fe1ab740c2afab3db0abedd74
  Stored in directory: /tmp/pip-ephem-wheel-cache-agspvyq5/wheels/49/44/6e/a5f6f709e7b231f3639ea9f9fc48a4699b958850715556e7f6
Successfully built scdl
Soundcloud Downloader
Failed to get item...


  


  

  


  and when I try by the Docker VPS by this commands :

  


  pip3 install git+https://github.com/flyingrub/scdl
pip3 install ffmpeg
scdl -l https://soundcloud.com/pandadub/sets/the-lost-ship --download-archive archive.txt -c


  


  pip3 install git+https://github.com/flyingrub/scdl pip3 install ffmpeg
scdl -l https://soundcloud.com/pandadub/sets/the-lost-ship —download-archive archive.txt -c

  


  I get this error :

  


  FileNotFoundError: [Errno 2] No such file or directory: 'ffmpeg'


  


  

  


  So I asked abut how could i do it by scdl and soundcloude python module.

  


  Update :

  


  Based of my two comment on this question I get different result by using the scdl python module via the above colab page, sometimes it is working and sometimes not, which i guess it is because of soudncloud server setting for preventing huge scraping and needs some delay during the music scraping form the soundcloud.

  


  Thanks.

  


• lavfi/metal : fix build with pre-10.11 deployment targets

  21 décembre 2021, par rcombs

  lavfi/metal : fix build with pre-10.11 deployment targets
   Ensure the yadif .metal compiles when targeting any Metal runtime version
  
   Use some preprocessor awkwardness to ensure Core Video's Metal-specific
  
    functionality is exposed regardless of our deployment target (this works
  
    around what seems to be an SDK header bug, filed as FB9816002)
  
   Ensure all direct references to Metal functions and classes are gated
  
    behind runtime version checks (this satisfies clang's deployment-target
  
    violation warnings provided by -Wunguarded-availability).
  

  • [DH] libavfilter/metal/utils.h
  • [DH] libavfilter/metal/vf_yadif_videotoolbox.metal
  • [DH] libavfilter/vf_yadif_videotoolbox.m