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  • ffmpeg add alpha to the video

    3 octobre 2014, par death_relic0

    Basically I have a video with a green background, and I mean a perfect green background (red = 0, green = 255, blue = 0) and I want to convert this to alpha (i.e add an alpha channel where 0 255 0 corresponds to alpha)

    I am very new to ffmpeg so I can’t figure this out. I am guessing it has something to do with the alphamerge option.

    THanks in advance

  • FFmpeg on Xcode

    4 octobre 2013, par user2741735

    I'm developing an app for ios which uses IP Camera to stream live videos to the user. I installed macports and ffmpeg using terminal on my mac. I have taken the IP Camera output and converted into .ts file using ffmpeg on terminal. Now I want the procedure to do the same using Xcode i.e. writing code in xcode to convert IP Camera output to .ts files.
    Thanks in advance.

  • FFMPEG capture image from different video formats

    16 juin 2015, par user1391023

    I am trying to extract image from video exactly at 5th second using the following command.

    ffmpeg -i input.mp4 -deinterlace -an -ss 5 -f mjpeg -t 1 -r 1 -y -s 200x180 output.jpg 2>&1

    It works for mp4 only where for other file formats i am getting a 0 kb image file.
    Any helps,

    Thanks in advance.

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