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Sur d’autres sites (8313)

  • Can't show image with opencv when importing av

    5 mars, par Flojomojo

    When importing the PyAv module, I am unable to show an image with opencv using imshow()

    


    Code without the PyAv module (works as expected)

    


    import cv2

img = cv2.imread("test_image.jpeg")
cv2.imshow('image', img)
cv2.waitKey(0)


    


    Code with the import (doesn't work, just hangs)

    


    import cv2
import av

img = cv2.imread("test_image.jpeg")
cv2.imshow('image', img)
cv2.waitKey(0)


    


    OS : Linux arch 5.18.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 09 Jun 2022 16:14:10 +0000 x86_64 GNU/Linux

    


    Am I doing something wrong or is this a (un-)known issue ?

    


  • FFmpeg slide show duration from text file

    8 mai 2022, par krv

    I am using ffmpeg to create a slideshow of images from a list of files. I am using the following command.

    


    ffmpeg -f concat -i List.txt output.mp4


    


    How can is set the duration of all the images in the list to 5 seconds so each image is displayed for 5 seconds ?

    


    Thanks

    


  • How to Show result after uploaded file in PHP

    23 avril 2022, par i0x4r

    I have a script that uploads the video to a server, everything is correct but there is a problem, after the upload of the video to the server is completed
it shows all the uploaded files in the (uploads) folder as array !

    


    I only want the result of the file I just uploaded, and it doesn't show me the previous files !
I need ffmpeg to improve video quality

    


    index.php

    


    &lt;?php&#xA;//index.php&#xA;&#xA;?>&#xA;&#xA;&#xA; &#xA;  &#xA;  &#xA;  <code class="echappe-js">&lt;script src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js&quot;&gt;&lt;/script&gt;&#xA;        &lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;        &#xA;  &#xA;  &lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/dropzone/5.5.1/dropzone.js&quot;&gt;&lt;/script&gt;&#xA;  &#xA; &#xA; &#xA;  
    &#xA;&#xA;
    &#xA;&#xA;

    &#xA; &#xA; &#xA; &#xA;
    &#xA;&#xA;

    &#xA;&#xA;
    &#xA;

    &#xA; &#xA;&#xA;&#xA;&lt;script&gt;&amp;#xA;&amp;#xA;$(document).ready(function(){&amp;#xA; &amp;#xA; Dropzone.options.dropzoneFrom = {&amp;#xA;  autoProcessQueue: true,&amp;#xA;  timeout: 300000,&amp;#xA;  acceptedFiles:&quot;video/*&quot;,&amp;#xA;  init: function(){&amp;#xA;   var submitButton = document.querySelector(&amp;#x27;#submit-all&amp;#x27;);&amp;#xA;   myDropzone = this;&amp;#xA;   submitButton.addEventListener(&quot;click&quot;, function(){&amp;#xA;    myDropzone.processQueue();&amp;#xA;   });&amp;#xA;   this.on(&quot;complete&quot;, function(){&amp;#xA;    if(this.getQueuedFiles().length == 0 &amp;amp;&amp;amp; this.getUploadingFiles().length == 0)&amp;#xA;    {&amp;#xA;     var _this = this;&amp;#xA;     _this.removeAllFiles();&amp;#xA;    }&amp;#xA;    list_image();&amp;#xA;   });&amp;#xA;  },&amp;#xA; };&amp;#xA;&amp;#xA; list_image();&amp;#xA;&amp;#xA; function list_image()&amp;#xA; {&amp;#xA;  $.ajax({&amp;#xA;   url:&quot;upload.php&quot;,&amp;#xA;   success:function(data){&amp;#xA;    $(&quot;#preview&quot;).html(data);&amp;#xA;   }&amp;#xA;  });&amp;#xA; }&amp;#xA;&amp;#xA; $(document).on(&amp;#x27;click&amp;#x27;, &amp;#x27;.remove_image&amp;#x27;, function(){&amp;#xA;  var name = $(this).attr(&amp;#x27;id&amp;#x27;);&amp;#xA;  $.ajax({&amp;#xA;   url:&quot;upload.php&quot;,&amp;#xA;   method:&quot;POST&quot;,&amp;#xA;   data:{name:name},&amp;#xA;   success:function(data)&amp;#xA;   {&amp;#xA;    list_image();&amp;#xA;   }&amp;#xA;  })&amp;#xA; });&amp;#xA; &amp;#xA;});&amp;#xA;&lt;/script&gt;&#xA;

    &#xA;

    upload.php

    &#xA;

        &lt;?php&#xA;&#xA;//upload.php&#xA;&#xA;$folder_name = &#x27;upload/&#x27;;&#xA;$tumb_name = &#x27;thumb/&#x27;;&#xA;$imageext = &#x27;.png&#x27;;&#xA;&#xA;if(!empty($_FILES))&#xA;{&#xA;&#xA; $temp_file = $_FILES[&#x27;file&#x27;][&#x27;tmp_name&#x27;];&#xA; $location = $folder_name . $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; move_uploaded_file($temp_file, $location);&#xA; $upload = $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; $uploadStr = str_replace(" ", "\ ",$upload);&#xA; $locationStr = str_replace(" ","\ ",$location);&#xA; $cmd  = "ffmpeg -y -i {$locationStr} -ss 00:00:15 -vframes 1 thumb/{$uploadStr}.png 2>&amp;1";&#xA; echo shell_exec($cmd);&#xA;}&#xA;&#xA;if(isset($_POST["name"]))&#xA;{&#xA; $filename = $folder_name.$_POST["name"];&#xA; $imagename = $thumb_name.$_POST["name"].$imageext;&#xA; unlink($filename);&#xA; unlink($imagename);&#xA;}&#xA;&#xA;$result = array();&#xA;&#xA;$files = scandir(&#x27;upload&#x27;);&#xA;&#xA;$output = &#x27;<div class="row">&#x27;;&#xA;&#xA;if(false !== $files)&#xA;{&#xA; foreach($files as $file)&#xA; {&#xA;  if(&#x27;.&#x27; !=  $file &amp;&amp; &#x27;..&#x27; != $file)&#xA;  {&#xA;   $output .= &#x27;&#xA;   <a href="http://stackoverflow.com/view.php?file=&#38;#x27;.$file.&#38;#x27;" target="_blank"> <img src="http://stackoverflow.com/feeds/tag/thumb/&#38;#x27;.$file.&#38;#x27;.png" class="img-thumbnail" width='246' height='138' /></a>&#xA;    <button type="button" class="btn btn-link remove_image">Remove</button>&#xA;   &#x27;;&#xA;  }&#xA; }&#xA;}&#xA;$output .= &#x27;</div>&#x27;;&#xA;echo $output;&#xA;&#xA;?>&#xA;

    &#xA;

    EDIT :&#xA;I put the example on an Array, I don't want it, I just want it to show the downloaded video I just uploaded as a result.

    &#xA;

    EDIT 2 :&#xA;There are some who say type $location and it displays the downloaded file, but this does not work !!!&#xA;I just tried more than once and with several uses, there is no display where the text is empty

    &#xA;

    This is an example of that

    &#xA;

    &lt;?php&#xA;&#xA;//upload.php&#xA;&#xA;$folder_name = &#x27;upload/&#x27;;&#xA;$tumb_name = &#x27;thumb/&#x27;;&#xA;$imageext = &#x27;.png&#x27;;&#xA;&#xA;if(!empty($_FILES))&#xA;{&#xA;&#xA; $temp_file = $_FILES[&#x27;file&#x27;][&#x27;tmp_name&#x27;];&#xA; $location = $folder_name . $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; move_uploaded_file($temp_file, $location);&#xA; $upload = $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; $uploadStr = str_replace(" ", "\ ",$upload);&#xA; $locationStr = str_replace(" ","\ ",$location);&#xA; $cmd  = "ffmpeg -y -i {$locationStr} -ss 00:00:15 -vframes 1 thumb/{$uploadStr}.png 2>&amp;1";&#xA; echo shell_exec($cmd);&#xA;}&#xA;&#xA;if(isset($_POST["name"]))&#xA;{&#xA; $filename = $folder_name.$_POST["name"];&#xA; $imagename = $thumb_name.$_POST["name"].$imageext;&#xA; unlink($filename);&#xA; unlink($imagename);&#xA;}&#xA;&#xA;&#xA;$output .= &#x27;Successfly file is "&#x27;.$location.&#x27;"&#x27;;&#xA;echo $output;&#xA;&#xA;?>&#xA;

    &#xA;

    Result : Successfly file is ""&#xA;no name file :(

    &#xA;

    EDIT 3 :

    &#xA;

    this code upload.php&#xA;functions not working

    &#xA;

    &lt;?php&#xA;&#xA;//upload.php&#xA;&#xA;$folder_name = &#x27;upload/&#x27;;&#xA;$tumb_name = &#x27;thumb/&#x27;;&#xA;$imageext = &#x27;.png&#x27;;&#xA;&#xA;if(!empty($_FILES))&#xA;{&#xA;&#xA; $temp_file = $_FILES[&#x27;file&#x27;][&#x27;tmp_name&#x27;];&#xA; $location = $folder_name . $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; move_uploaded_file($temp_file, $location);&#xA; $upload = $_FILES[&#x27;file&#x27;][&#x27;name&#x27;];&#xA; $uploadStr = str_replace(" ", "\ ",$upload);&#xA; $locationStr = str_replace(" ","\ ",$location);&#xA; $cmd  = "ffmpeg -y -i {$locationStr} -ss 00:00:15 -vframes 1 thumb/{$uploadStr}.png 2>&amp;1";&#xA; echo shell_exec($cmd);&#xA;}&#xA;&#xA;&#xA;echo "The file " . $location . " has been uploaded";&#xA;// not working&#xA;echo "<br />";&#xA;echo "The file " . $upload . " has been uploaded";&#xA;// not working&#xA;echo "<br />";&#xA;echo "The file " . $uploadStr . " has been uploaded";&#xA;// not working&#xA;echo "<br />";&#xA;echo "The file " . $locationStr . " has been uploaded";&#xA;// not working&#xA;&#xA;?>&#xA;

    &#xA;

    Result upload.php in EDIT 3

    &#xA;

    this error :&#xA;[23-Apr-2022 12:31:56 Asia/Riyadh] PHP Notice : Undefined variable : location in /home/prdix/public_html/test/upload.php on line 38

    &#xA;

    line 38 : echo $location ;

    &#xA;

    About the developer solution Markus AO

    &#xA;

    I did the experiment and it is quite good, but dropzone is still missing, because I will upload a large video and the normal upload compresses the video before uploading, here is a picture from my mobile while uploading, but this does not happen with dropzone&#xA;enter image description here

    &#xA;

    I want to implement this in dropzone as well, because this library does not compress the video, but upload it in full size.

    &#xA;

    Thank you bro.

    &#xA;