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• How to upload and overlay animation.html file from system and overlay over video in HTML or ANGULAR

  23 septembre 2020, par Hiren

  Hey I am trying to build an app which has a functionality of allowing a user to upload a pre-existing .HTML file from his system which contains a simple animation init

  


  I want to get that file and overlay the animation contained in .HTML file on my video and display it to the user.

  


  is that possible please help me if it is.

  


  


  


  body {
  background: #;
}

#fullScreenBox {
  height: 500px;
  width: 50%;
  background: #;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

#hiddenBox {
  width: 50%;
  height: 500px;
  background: #;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  overflow: hidden;
}

#title {
  width: 100%;
  height: 150px;
  background: #;
  /*U can also use #*/
  position: absolute;
  top: 200px;
  font-family: arial;
  font-size: 50px;
  color: white;
  text-align: center;
  opacity: 0;
}

#subtitle {
  width: 100%;
  height: 50px;
  background: #;
  /*U can also use #*/
  position: absolute;
  top: 300px;
  font-family: arial;
  font-size: 50px;
  color: red;
  text-align: center;
  opacity: 0;
}

#line01 {
  width: 25%;
  height: 4px;
  background: white;
  /*U can also use #*/
  position: absolute;
  top: 50px;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  color: white;
  opacity: 0;
}

#overlay {
  position: absolute;
  color: #FFF;
  text-align: center;
  font-size: 20px;
  padding: 10px 0;
  width: 50%;
  height: 500px;
  background: #;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}

#v {
  height: 500px;
  width: 100%;
}

  


  &#xA;&#xA;  <div>&#xA;    <div class="">&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;        LONDON&#xA;      </div>&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;&#xA;      </div>&#xA;&#xA;      <div class="webvfx" data-animate="&#x27;{&#xA;">&#xA;        City of Dreams!&#xA;      </div>&#xA;    </div>&#xA;</div>

  


  


  



  This is my HTML file that contains a simple animation for example which is in user system

  


  In my application when user upload this file i want to overlay the animation contained in this file on the video as he uploads it is these any way
Thank you

  


• avformat/matroskaenc : Avoid unnecessary seek

  2 mai 2020, par Andreas Rheinhardt

  avformat/matroskaenc : Avoid unnecessary seek
  The Matroska muxer has a pair of functions designed to write master
  
  elements whose exact length is not known in advance : start_ebml_master()
  
  and end_ebml_master(). The first one of these would write the EBML ID of
  
  the master element that is about to be started, reserve some bytes for
  
  the length field and record the current position as well as how many
  
  bytes were used for the length field. When writing the master's contents
  
  is finished, end_ebml_master() gets the current position (at the end of
  
  the master element), seeks to the length field using the recorded
  
  position, writes the length field and seeks back to the end of the
  
  master element so that one can continue writing other elements.
  But if one wants to modify the content of the master element itself,
  
  then the seek back is superfluous. This is the scenario that presents
  
  itself when writing the trailer : One wants to update several elements
  
  contained in the Segment master element (this is the main/root master
  
  element of a Matroska file) that were already written when writing the
  
  header. The current approach is to seek to the beginning of the file
  
  to update the elements, then seek to the end, call end_ebml_master()
  
  which immediately seeks to the beginning to write the length and seeks
  
  back. The seek to the end (which has only been performed because
  
  end_ebml_master() uses the initial position to determine the length
  
  of the master element) and the seek back are of course superfluous.
  This commit avoids these seeks by no longer using start/end_ebml_master()
  
  to write the segment's length field. Instead, it is now written
  
  manually. The new approach is : Seek to the beginning to write the length
  
  field, then update the elements (in the order they appear in the file)
  
  and seek back to the end.
  This reduces the ordinary amount of seeks of the Matroska muxer to two
  
  (ordinary excludes scenarios where one has big Chapters or Attachments
  
  or where one writes the Cues at the front).
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/matroskaenc.c

• avcodec/opus : Check count of ambisonic channels

  17 février 2017, par Michael Niedermayer

  avcodec/opus : Check count of ambisonic channels
  https://tools.ietf.org/html/draft-ietf-codec-ambisonics-01#section-3.1
  
  specifies the maximum as 227
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/opus.c