Recherche avancée

Sur d’autres sites (12610)

• Softwares for adding real time text to a video [on hold]

  30 juillet 2013, par user763410

  I am trying to add real time text (like weather information, stock quotes) to a video and broadcast it. My videos are going to be 2 hours long. I have been searching for decent softwares which can do the work for me. FFmpeg can do overlays only if text to be added is available fully before running ffmpeg code, so its not real time. I have not been able to able to get gstreamer to work on my hardware.

  So, My question is :
  Please suggest some softwares which can add (text)data to a video in real time.
  Please don't post comparisons as that will trigger moderator's anger ! I don't want to start a flame war. Purpose of the question is to make a list. Btw, this should work from command line rather than a GUI.

  (Ps : If the question is closed because of being "not cnonstructive, please answer it on my google docs page here.
  http://goo.gl/14dR2H)

  Thanks very much in advance.

• Is it possible to play two videos as one like this ? [on hold]

  25 février 2015, par Marko

  Is it possible to show/play video online that’s made of two or more video files ? Here’s explanation.

  My site is hosted on Linux/Appache/PHP server. I have video files in FLV/F4V format.

  What I want is to have online video player that plays video composed of multiple video files concatenated together in real-time, i.e. when user clicks to see a video.

  Resulting video looks like one video, with no visual clues, lags or any delay between videos parts. Basically what is done is some form of on-the-fly editing or pre-editing, and user sees the result.

  Is this possible anyhow with flash, actionscript, ffmpeg, php, html or some other online technology ? I don’t need explanation how it’s possible, but just a nod that it’s possible and some links to further investigate.

• Visualizing ffmpeg benchmarks

  2 avril 2020, par Saurabh P Bhandari

  I have generated benchmarks for comparing two approaches taken for scaling down video files (mp4) using ffmpeg tool.

  



  The benchmarks are logged in this format :

  



  x.mp4 Output_Resolution : 360p

Method : A 

real    0m26.817s
user    1m38.058s
sys     0m0.504s

Method : B, some-parameter-for-B : b1

real    0m26.465s
user    1m42.824s
sys     0m1.111s

Method : B, some-parameter-for-B : b2

real    0m26.236s
user    1m42.194s
sys     0m0.862s

Method : B, some-parameter-for-B : b3

real    0m25.050s
user    1m36.492s
sys     0m0.680s


y.mp4 Output_Resolution : 144p

Method : A 

real    1m9.426s
user    3m38.823s
sys     0m1.353s

Method : B, some-parameter-for-B : b1

real    1m4.956s
user    4m13.764s
sys     0m2.875s

Method : B, some-parameter-for-B : b2

real    1m5.033s
user    4m13.455s
sys     0m2.183s

Method : B, some-parameter-for-B : b3

real    0m25.050s
user    1m36.492s
sys     0m0.680s




  



  I am doing this for multiple video files and multiple resolutions. Lets say I need to visualize the comparison of benchmarks(real time) of method A and method B for given a resolution using bar chart below :

  



  

  



  How do I efficiently get the necessary values from the the log and plot them using matplotlib in python ?

  



  (I am more interested in the approach you would take to solve this problem)