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• Video conversion online - transloadit http upload

  20 janvier 2015, par user1765661

  So basically I need to watermark a video (with user info) whenever a user requests a download.

  I want to have only the original file on a folder of my website/server, "videos/original.mp4" for example.

  Then if my hosting service provided FFMPEG, I could use it to process all of this.

  The problem is that i cant use ffmpeg on my current hosting provider. So I came acroos transloadit . But can I use this service to host the original video online and send a request of conversion/watermarking without having to upload the same video over and over ?

  I will have to watermark the video for each user that download the video. Of course those will be temp videos, because I will give like 48 hours to download and then delete it, just mantaining the original file.

  Thank you

• alpha support for fluent-ffmpeg complexFilter drawtext ?

  24 octobre 2017, par mgd

  I am able to use ffmpeg from a console and get a text to fade in and out, but am trying, and failing, to use the alpha option in the fluent-ffmpeg.

  This works :

  ffmpeg -i testvideo.mp4 -filter_complex "[0:v]drawtext=fontfile=//Lato-Black.ttf:text='This is a test':fontsize=12:fontcolor=e82e2e:alpha='if(lt(t,1),0,if(lt(t,2),(t-1)/1,if(lt(t,4),1,if(lt(t,5),(1-(t-4))/1,0))))':x=(w-text_w)/2:y=(h-text_h)/2" outfile.mp4

  This fails when used within a node service :

  .complexFilter({
  
                  filter: 'drawtext',
  
                  options: {
  
                      fontfile: 
  
                      text: "This is a test",
  
                      fontsize: 18,
  
                      fontcolor: "ff0000",
  
                      alpha : if(lt(t,1),0,if(lt(t,2),(t-1)/1,if(lt(t,4),1,if(lt(t,5),(1-(t-4))/1,0)))),
  
                      x: 10,
  
                      y: 10
  
                  }
  
              }, 'out')

  fluent-ffmpeg fails with : ffmpeg exited with code 1 : Error configuring
  complex filters. Invalid argument

  Is alpha not supported in fluent-ffmpeg (I can’t find any documentation for it), or is it a different keyword ?

• How to save video recording(webcam) and screen recording to directly Mp4 in windows ?

  10 juillet 2019, par SaddamBinSyed

  I have an applicaiton which running as a windows service which is responsible for Recording the video/audio and screen capture as well.

  now I am using DirectX lib and Aforge dll to save recorded file to AVI format which is not supported by HTML 5 so I am then converting the same to mp4 using NVideoConverter dll.

  now I am facing high CPU utilization (30% -recording service) FFmpeg (30% conversion task).

  So I wanting a solution/method to directly record as an MP4 format to get rid of conversion part as well as CPU utilization.

  I couldn’t use FFmpeg directly to the record since when user logoff/signout the current recording will get corrupted.

  So How can I record as an Mp4 in windows 7 and 10 ?

  also, I came across that win10 default camera application is saving the recording directly as Mp4 file which is playing well in both IE and chrome.

  so it means there is a way in windows 10.

  If anyone implemented/knows about the same please advise me.

  help highly appreciated.

  thanks.