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• FFMPEG Error initializing complex filters when using watermark [duplicate]

  13 décembre 2019, par Ahmed T

  This question already has an answer here :

  • How to add transparent watermark in center of a video with ffmpeg ?
    
    1 answer
    

  Im trying to convert mp4 file using ffmpeg on windows by using this command ,

  ffmpeg -i 1.mp4 -vcodec libx264 -movflags +faststart -threads 0 -r 25 -g 50 -crf 25 -me_method hex -trellis 0 -bf 8 -acodec aac -strict -2 -ar 44100 -ab 128k -vf subtitles=1.srt:force_style='FontName=Changa,Fontsize=20' -qscale:v 3 -preset veryfast 1z.mp4

  its converted without problem but i need to use png watermark file to be converted with the video bottom right i have tried all options using search but no one works sometimes i got problem for complex rules , im a new with ffmpeg and i dont know how to do it , your help really appreciated .
  Thanks

• PC Video Conferencing in the Year 1999

  21 juin 2011, par Multimedia Mike — General

  Remember Intel’s custom flavor of H.263 cleverly named I.263 ? I think I have finally found an application that used it thanks to a recent thrift shop raid— Intel Video Phone :

  
  
  

  The root directory of the disc has 2 copies of an intro.avi video. One copy uses Intel Indeo 3 video and PCM audio. The other uses I.263 video and an undetermined (presumably Intel-proprietary) audio codec — RIFF id 0x0402 at a bitrate of 88 kbits/sec for stereo, 22 kHz audio. The latter video looks awful but is significantly smaller (like 4 MB vs. 25 MB).

  This is the disc marked as "Send it to a friend...". Here’s the way this concept was supposed to operate :

  • You buy an Intel Video Phone Camera Pack (forgotten page courtesy of the Internet Archive) which includes a camera and 2 CDs.
  • You install the camera and video phone software on your computer.
  • You send the other CD to the person whom you want to be able to see your face when you’re teleconferencing with them.
  • The other party installs the software.
  • The 2 of you may make an internet phone call presumably using commodity PC microphones for the voice component ; the person who doesn’t have a camera is able to see the person who does have a camera.
  • In a cunning viral/network marketing strategy, Intel encourages the other party to buy the physical hardware as well so that they may broadcast their own visage back to the other person.

  If you need further explanation, the intro lady does a great job :

  
  
  

  I suspect I.263 was the video codec driving this since Indeo 3 would probably be inappropriate for real time video applications due to its vector quantizing algorithm.

• How can i add a watermark on videos ? [duplicate]

  11 septembre 2019, par The Beast

  This question already has an answer here :

  • How to add transparent watermark in center of a video with ffmpeg ?
    
    1 answer
    

  This is my code that i’m using to merge videos .

   var_dump(shell_exec( "C:/ffmpeg/bin/ffmpeg.exe -f concat -safe 0 -i   D:/xampp/htdocs/test/file.txt -c copy D:/xampp/htdocs/test/phpconcatenated.mp4 2>&1"));

  But this code is working only when all videos is with same number of frames/second . and if frames per second are different for each other then it merge videos with only sounds with pause screen .