Recherche avancée

Sur d’autres sites (11250)

• What is the difference between "location" and "location-eng" metadata of a MP4 file ?

  10 décembre 2020, par Weihang Jian

  I am trying to retrieve GPS information from media files using ffprobe, for example :

  


  $ ffprobe -v quiet -show_format sample.mp4
[FORMAT]
filename=sample.mp4
nb_streams=2
nb_programs=0
format_name=mov,mp4,m4a,3gp,3g2,mj2
format_long_name=QuickTime / MOV
start_time=0.000000
duration=4.293000
size=11888152
bit_rate=22153556
probe_score=100
TAG:major_brand=mp42
TAG:minor_version=0
TAG:compatible_brands=isommp42
TAG:creation_time=2020-09-20T11:33:49.000000Z
TAG:location=+25.0731+121.3663/
TAG:location-eng=+25.0731+121.3663/
TAG:com.android.version=10
TAG:com.android.manufacturer=Google
TAG:com.android.model=Pixel
[/FORMAT]


  


  We can see that there are 2 tags that look like ISO6709 representations, location and location-eng.

  


  And here are my questions :

  


  

  1. What is the difference between location and location-eng ? It looks like they are always the same. Why do we need 2 different keys with same the value ?

  


  2. Are location and location-eng really in ISO6709 representations ? Is there any specification or standard I can refer to ?

  


  


  I would really appreciate your help.

  


• ffmpeg-normalize exits with OSError : [WinError 193] %1 is not a valid Win32 application

  1er septembre 2021, par Moldy1

  I have a large number of files I want to normalize the volume with a simple method using a basic loop.

  


  When trying to use ffmpeg-normalize the application exits with the error. I searched the error on-line but I can't find any issue similar to mine. I thought it may be a 'path' or file type association problem but they look ok.

  


  Can anyone give me an explanation for this error and a possible fix for it please ?

  


  D:\Test>ffmpeg-normalize.exe in.mkv -o out.mkv&#xA;Traceback (most recent call last):&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\runpy.py", line 197, in _run_module_as_main&#xA;    return _run_code(code, main_globals, None,&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\runpy.py", line 87, in _run_code&#xA;    exec(code, run_globals)&#xA;  File "C:\Users\Les\AppData\Local\Programs\Python\Python39\Scripts\ffmpeg-normalize.exe\__main__.py", line 7, in <module>&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\site-packages\ffmpeg_normalize\__main__.py", line 409, in main&#xA;    ffmpeg_normalize = FFmpegNormalize(&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\site-packages\ffmpeg_normalize\_ffmpeg_normalize.py", line 68, in __init__&#xA;    self.has_loudnorm_capabilities = ffmpeg_has_loudnorm()&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\site-packages\ffmpeg_normalize\_cmd_utils.py", line 185, in ffmpeg_has_loudnorm&#xA;    cmd_runner.run_command()&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\site-packages\ffmpeg_normalize\_cmd_utils.py", line 101, in run_command&#xA;    p = subprocess.Popen(&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\subprocess.py", line 947, in __init__&#xA;    self._execute_child(args, executable, preexec_fn, close_fds,&#xA;  File "c:\users\les\appdata\local\programs\python\python39\lib\subprocess.py", line 1416, in _execute_child&#xA;    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,&#xA;OSError: [WinError 193] %1 is not a valid Win32 application&#xA;&#xA;D:\Test>path&#xA;PATH=C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\OpenSSH\;C:\Program Files\Calibre2\;C:\Program Files (x86)\Calibre2\;C:\Users\Les\AppData\Local\Programs\Python\Python39\Scripts\;C:\Users\Les\AppData\Local\Programs\Python\Python39\;C:\Users\Les\AppData\Local\Microsoft\WindowsApps;D:\MABS\local64\bin-video;C:\Program Files (x86)\sox-14-4-2&#xA;&#xA;D:\Test>ftype python.file&#xA;python.file="C:\Users\Les\AppData\Local\Programs\Python\Python39\python.exe" "%1"&#xA;&#xA;D:\Test>python.exe&#xA;Python 3.9.1 (tags/v3.9.1:1e5d33e, Dec  7 2020, 17:08:21) [MSC v.1927 64 bit (AMD64)] on win32&#xA;&#xA;ffmpeg -version&#xA;ffmpeg version N-100483-g728b83a7c4-gd67c6c7f6f&#x2B;4 Copyright (c) 2000-2020 the FFmpeg developers&#xA;built with gcc 10.2.0 (Rev6, Built by MSYS2 project)&#xA;&#xA;&#xA;&#xA; D:\Test>ffmpeg-normalize --version&#xA;        ffmpeg-normalize v1.22.1&#xA;</module>

  


• error after upgrading to ffmpeg n4.3.1 version

  19 avril 2021, par al pacino

  I upgraded to ffmpeg n4.3.1 version using tar file. and then used ./configure and then used make and sudo install make to install files.

  


  but after the installation, I am getting the following error -

  


          ffmpeg -i 'https://player.vimeo.com/external/202414841.sd.mp4?s=4f9ef25c7c52a64a5788afb5181a51d0f31f2f43&profile_id=164' -vf scale=480:360 -c:v libvpx-vp9 -crf 30 -b:v 0 -b:a 128k -c:a libopus sample_created_video.webm
    ffmpeg version 8b3f71b4 Copyright (c) 2000-2020 the FFmpeg developers
      built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
      configuration: 
      libavutil      56. 51.100 / 56. 51.100
      libavcodec     58. 91.100 / 58. 91.100
      libavformat    58. 45.100 / 58. 45.100
      libavdevice    58. 10.100 / 58. 10.100
      libavfilter     7. 85.100 /  7. 85.100
      libswscale      5.  7.100 /  5.  7.100
      libswresample   3.  7.100 /  3.  7.100
    Unrecognized option 'crf'.
    Error splitting the argument list: Option not found


  


  I also tried to use sudo snap install fmmpeg but I was getting error-

  


      [Errno 2] No such file or directory: 
    and also permission denied for sample_created_video.webm


  


  I don't know what is causing the problem. Is there any way to fix this issue or to upgrade to 4.3.1 using a different method ?