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• How to capture video of VIEW in android

  18 novembre 2015, par Mayur R. Amipara

  we can take screen-shot of particular VIEW programmatically in android same way i want to capture video of VIEW , is that possible ?

  i successfully run third party library ffmpeg but it doesn’t provide such functionality.

  Another way i tried it by taking so many screenshot of view each-second and combine it with ffmpeg , but it is to expensive and taking soooooo much time.

  FINAL QUESTIONS :

  i want to add text that is animating on video, any idea todo this ?

  currently get idea that i can animating textview in layout above video is playing in activity and capture that part of screen programatically, but i fail !

  iphone have functionality for adding text overlay with animation and it is called by AVComposition in iPhone. so, Android have such type of any functions or method ?... googled it for 5 days but not getting any result !

  sorry for my bad english, any point to suggest or any idea that how can i achieve this ?

• MP4 to all mobile compatible 3gp

  2 mai 2013, par Susheel Mishra

  I am using FFMPEG for converting mp4 video to 3gp.I want to convert it to low end android phone as well as iphone.I am not concern with quality.Using it on linux server with php.

  I searched but my need is diferent , hence post question.

  thanks

• How can I merge these 2 FFmpeg commands ?

  7 juin 2019, par WebDev

  I have two commands which are part of a larger set of commands. Basically I need to merge these two into one command to speed things up.

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "photos.txt" -i "mainscreen.png" -i "audio.mp3" -filter_complex "scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582" -preset veryfast -tune stillimage -shortest -pix_fmt yuv420p "slideshow.mp4"
  
  
  
  ffmpeg -y -i "slideshow.mp4" -filter_complex "[0:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[v];[0:v][v]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 0:a -preset veryfast "done.mp4"

  Firstly creates a slideshow and adds text, then draws a showwaves effect onto the video.

  Update

  From Gyan’s response, and after tinkering for a while, it kind of works how I needed it to. It does what I wanted, but keeps throwing "depreciated pixel format" error. Here’s the updated command once I finished. What is the problem, and is the command written properly ?

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "images.txt" -i "screen.png" -i "audio.mp3" -filter_complex "scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=Assets/Fonts/font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582[v];[2:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 2:a -c:v libx264 -c:a aac -preset veryfast -shortest -pix_fmt yuv420p "done.mp4"

  Second update

  Thanks to Gyan for helping me better understand the command. Here is the final code which does what I need :

  ffmpeg -y -f concat -safe 0 -protocol_whitelist "file,http,https,tcp,tls" -i "images.txt" -i "screen.png" -i "tmp.audio.mp3" -filter_complex "[0]scale=3840x2160,zoompan=z='if(lte(zoom,1.0),1.2,max(1.001,zoom-0.0015))':x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)':s=1280x720:fps=15:d=120, overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2, drawtext=fontfile=font.otf:text='%%~ni':fontcolor=black:fontsize=32:x=90:y=582[v];[2:a]showwaves=mode=cline:s=110x36:r=15:scale=sqrt:colors=0x222222,colorkey=0x000000:0.01:0.1,format=yuva420p[w];[v][w]overlay=77:444,scale=1280:720[outv]" -map "[outv]" -map 2:a -preset veryfast -shortest -pix_fmt yuv420p "done.mp4"

  Only change from Gyan’s code is I removed [p] ;[1][p] and replaced with a comma to achieve what I needed. Seems to work perfect now, ignoring the depreciated pixels warning.