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• Reading file metadata in nodejs with ffmetadata and fs returns undefined

  10 November 2020, by Citanaf

  I cant seem to get this right. I am attempting to read a file's metadata (title) with ffmetadata via a loop on the folder using fs. I would then like to push those properties into an object array called files. If I place the push method inside the ffmetadata, it throws a "push is not a function" error. If I place the push method outside ffmetadata, but inside readdirSync, the object gets created, but the titles are undefined.

  


  I think I'm running into a asynchronous issue or a variable scope issue? I've place several Console.logs over this and the return from the metadata returns after code that comes well after this section.

  


  Any help is appreciated.

  


  var path = './AudioFiles/'
var files = [];
var fTitle

//Read list of files
fs.readdirSync(path).forEach((file) => {
    ffmetadata.read(path + file, function(err, data){
        if (err) console.error("Error reading metadata", err);
        else {
            fTitle = data.title
        }
    })
    files.push({name:file.replace('.mp3',''),title:fTitle})
})


  


  This is what I am receiving:

  


  files = [{name:"myFile1",title:undefined},{name:"myFile2",title:undefined}...]


  


  I am expecting the below results:

  


  files = [{name:"myFile1",title:"myFile1Title"},{name:"myFile2",title:"myFile2Title"}...]


  


• avutil/log: added av_log_format_line2 which returns buffer length

  27 April 2016, by Andreas Weis

  avutil/log: added av_log_format_line2 which returns buffer length
  The new function behaves the same as av_log_format_line, but also forwards
  
  the return value from the underlying snprintf call. This will allow
  
  callers to accurately determine the size requirements for the line buffer.
  Signed-off-by: Andreas Weis <github@ghulbus-inc.de>
  
  Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] doc/APIchanges
  • [DH] libavutil/log.c
  • [DH] libavutil/log.h
  • [DH] libavutil/version.h

• python imageio.get_reader() returns odd exception

  17 August 2020, by tristan_jia

  import imageio

reader = imageio.get_reader("./t.mp4")


  


  As shown above, with python 3.6.10, it returns:

  


  >>> reader = imageio.get_reader("../")&#xA;Traceback (most recent call last):&#xA;  File "<stdin>", line 1, in <module>&#xA;  File "/home/tristan_jia/workspace/py3.6/venv/lib/python3.6/site-packages/imageio/core/functions.py", line 129, in get_reader&#xA;    return format.get_reader(request)&#xA;  File "/home/tristan_jia/workspace/py3.6/venv/lib/python3.6/site-packages/imageio/core/format.py", line 168, in get_reader&#xA;    return self.Reader(self, request)&#xA;  File "/home/tristan_jia/workspace/py3.6/venv/lib/python3.6/site-packages/imageio/core/format.py", line 217, in __init__&#xA;    self._open(**self.request.kwargs.copy())&#xA;  File "/home/tristan_jia/workspace/py3.6/venv/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 357, in _open&#xA;    self._initialize()&#xA;  File "/home/tristan_jia/workspace/py3.6/venv/lib/python3.6/site-packages/imageio/plugins/ffmpeg.py", line 430, in _initialize&#xA;    shell=ISWIN)&#xA;  File "/usr/lib64/python3.6/subprocess.py", line 729, in __init__&#xA;    restore_signals, start_new_session)&#xA;  File "/usr/lib64/python3.6/subprocess.py", line 1364, in _execute_child&#xA;    raise child_exception_type(errno_num, err_msg, err_filename)&#xA;OSError: [Errno 8] Exec format error: &#x27;/home/tristan_jia/.imageio/ffmpeg/ffmpeg-linux64-v3.3.1&#x27;&#xA;&#xA;</module></stdin>

  


  I searched everywhere but haven't seen any similar questions. The script runs on Opensuse Leap 15.1, is it related to the system I use?