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• FFMPEG show audio frequency waves with border

  13 juillet 2020, par Nikhil Solanki

  I am trying to generate sine waves or audio frequency like using this command :

  


  ffmpeg -i combine2.mp4 -i image1.png -i song.mp3 -t 20 -filter_complex "[0]split=2[color][alpha]; [color]crop=iw/2:ih:0:0[color]; [alpha]crop=iw/2:ih:iw/2:ih[alpha]; [color][alpha]alphamerge[v1];
[1]scale=540:960, setsar=1[v2];
[2]showfreqs=s=540x100:mode=line:ascale=sqrt:colors=white|red[v3];
[v2][v3] overlay=main_w-overlay_w:main_h-overlay_h-10[v4];
[v4][v1] overlay=1" output_video2.mp4 -y


  


  This command shows frequency of audio with white colour only and also its not smooth as above image. So, how can I generate waves like above image smooth and bordered ?

  


  Output video :


  


• Use ffmpeg to show a webcam live stream in a browser

  20 juillet 2020, par Toast

  I have a webcam that is connected to a server and I'd like to view a live stream of it in a web browser.

  


  I'd like to include a video tag like this :

  


  <video></video>&#xA;

  


  What is an ffmpeg command that will send a video stream to browser clients ?
I managed to record a video to disk with this command :

  


  ffmpeg -f v4l2 -i /dev/video0 output.mkv


  


  I'm not sure if rtsp and ffmpeg are a good choice and I'm open for alternative suggestions.
I'm looking for a solution that is simple to setup and demo. Scalability and support for older browsers don't matter and audio isn't needed. I'd prefer a solution that sends compressed video instead of individual images (MJPG).

  


• Crop layout for Videos using touch for a Video Editor like Video Show or Filmora Go in android studio [closed]

  26 août 2020, par Rayhan Khan

  I am new to the android studio (Java) and video editing application. I am developing a video editor in android studio with FFMpeg Library.

  


  I want to create a crop layout with a rectangle layer on top of it to measure the details like :

  


  

crop video width : 900
crop video height : 500
left distance (x value) : 190
top distance (y value) : 110

                                    1280
****************************************************************************
*FULL VIDEO                           |                                    *
*                                    110                                   *
*                                     |                                    *
*            **************************************************            *
*            *                       900                      *            *
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*----190-----*                     CONTENT                500 *----190-----* 720
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*            *                                                *            *
*            **************************************************            *
*                                     |                                    *
*                                    110                                   *
*                                     |                                    *
****************************************************************************


  


  Please help. Thank you.

  


  Screenshot 1 :

  


  

  


  Screenshot 2 :