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• FFmpeg : omitting -filter_complex results in missing video in some players

  17 mai 2017, par pintxo

  I created a not so simple ffmpeg command with a complex filter to append opening/closing credits to a video. In the same process the video is resized and re-encoded. This works fine in all players I tested.

  When I leave out the -filter_complex arg and image inputs, the resulting file plays as expected in VLC but has only audio (no video) in Windows Media Player.

  This is all done on Windows 10, using a standard windows batch file.

  Any one an idea what’s going on here ? My ffmpeg foo is very limited.

  ffmpeg.exe ^
  
   -i "..\videos\film.mov" ^
  
   -y ^
  
   -codec:a aac ^
  
   -s:v 1280x720 ^
  
   -codec:v libx264 -preset slower -tune animation -crf 22 ..\videos\film.mov.m4v"
  
  
  
  ffmpeg.exe ^
  
   -i "..\videos\film.mov" ^
  
   -i OpeningCredits.de.png -i ClosingCredits.de.png ^
  
   -filter_complex "[0:v][1:v] overlay=0:0:enable='between(t,0,3.5)',drawtext=enable='between(t,0,3.5)':fontfile=fonts/Roboto-Bold.ttf:text=Test:fontcolor=white:fontsize=104:x=(w-text_w)/2:y=(h-text_h)/2+45,drawtext=enable='between(t,0,3.5)':fontfile=fonts/Roboto-Bold.ttf:text=:fontcolor=white:fontsize=104:x=(w-text_w)/2:y=(h-text_h)/2+45+text_h+20 [tmp]; [tmp][2:v] overlay=0:0:enable='between(t,39-5.2,39)'" ^
  
   -y ^
  
   -codec:a aac ^
  
   -s:v 1280x720 ^
  
   -codec:v libx264 -preset slower -tune animation -crf 22 "..\videos\film.mov.m4v"

• How do I upscale an iOS App Preview video to 1080 x 1920 ? [closed]

  12 avril 2024, par Benjamin Thiel

  I just captured a video of my new app running on an iPhone 6 using QuickTime Player and a Lightning cable. Afterwards I created an App Preview project in iMovie, exported it and could successfully upload it to iTunes Connect.

  



  Apple requires developers to upload App Previews in different resolutions dependent on screen size, namely :

  



  

  • iPhone 5(S) : 1080 x 1920 or 640 x 1136

  


  • iPhone 6 : 750 x 1334 (what I have)

  


  • iPhone 6+ : 1080 x 1920

  


  



  Obviously, 1080 x 1920 is killing two birds with one stone. I know that upscaling isn't the perfect solution, but it's meeting my needs. Since I don't own a 6+, another recording session won't do the trick.

  



  Unfortunately, iTunes Connect is extremely picky about what to accept. Here's what I tried, to no avail :

  



  

  • Handbrake, iMovie, QuickTime do not support upscaling

  


  • MPEG Streamclip

  


  • ffmpeg -i input.mp4 -acodec copy -vf scale=1080:1920 output.mp4

  


  



  Strangely enough, iTunes Connect keeps complaining about the wrong resolution when I try to upload the output.mp4 of ffmpeg.

  


• How do I upscale an iOS App Preview video to 1080 x 1920 ?

  30 août 2016, par Benjamin Thiel

  I just captured a video of my new app running on an iPhone 6 using QuickTime Player and a Lightning cable. Afterwards I created an App Preview project in iMovie, exported it and could successfully upload it to iTunes Connect.

  Apple requires developers to upload App Previews in different resolutions dependent on screen size, namely :

  • iPhone 5(S) : 1080 x 1920 or 640 x 1136
  • iPhone 6 : 750 x 1334 (what I have)
  • iPhone 6+ : 1080 x 1920

  Obviously, 1080 x 1920 is killing two birds with one stone. I know that upscaling isn’t the perfect solution, but it’s meeting my needs. Since I don’t own a 6+, another recording session won’t do the trick.

  Unfortunately, iTunes Connect is extremely picky about what to accept. Here’s what I tried, to no avail :

  • Handbrake, iMovie, QuickTime do not support upscaling
  • MPEG Streamclip
  • ffmpeg -i input.mp4 -acodec copy -vf scale=1080:1920 output.mp4

  Strangely enough, iTunes Connect keeps complaining about the wrong resolution when I try to upload the output.mp4 of ffmpeg.