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• avcodec/bitstream : Dont try to free buffers for static VLCs

  8 août 2013, par Michael Niedermayer

  avcodec/bitstream : Dont try to free buffers for static VLCs
  Such buffers are not malloced thus freeing would be bad.
  
  Note though this condition never could have happened so this
  
  is more for correctness sake and not a true bugfix
  Fixes CID1061047
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/bitstream.c

• Is there an effective and cheap/free way to host video for a mobile app that must be approved by an admin before going live ? [on hold]

  9 août 2013, par user2658775

  We are building a mobile app for the iOS and Android operating systems. The app is to be a communication platform for members within an organization. Content is generated by users and submitted to the admin. Once approved by the admin the content is pushed to the app. One feature of the app is the ability to upload video.

  We are having a tough time attempting to figure out the best way to do this. Because the app will be representing the organization, the organization must have control over the approval process.

  So far we have come up with the following options :

  Option 1 : purchase a dedicated server from hosting service provider. The basic package with Blue host is $150/month which is fairly expensive.

  Option 2 : have the users post to YouTube using their personal accounts. Upon posting to YouTube (via the app) the app would send a notification to the admin that a new video has been posted. Admin would review the video and if acceptable admin would user url link to post video to app. This option, while free, requires many steps that will bog down the submittal process.

  Does anyone know of an effective way to post video to an app that requires approval by an admin ?

• Multiple Overlay Movies in FFMPEG

  15 décembre 2014, par John Du

  I was trying to make a 3 columns by 2 row overlay in FFMEG

  I found this command which works great for a 2x2 movie overlay

  ffmpeg.exe -i video1.mp4 -i video2.mp4 -i video3.mp4 -i video4.mp4 -filter_complex "[0:0]scale=iw/2:ih/2,pad=iw*2:ih*2[a];[1:0]scale=iw/2:ih/2[b];[2:0]scale=iw/2:ih/2[c];[3:0]scale=iw/2:ih/2[d];[a][b]overlay=w[x];[x][c]overlay=0:h[y];[y][d]overlay=w:h,drawtext=fontsize=12:fontcolor=white:fontfile=/Windows/Fonts/arial.ttf:text='vid1':x=35:y=35,drawtext=fontsize=12:fontcolor=white:fontfile=/Windows/Fonts/arial.ttf:text='vid2':x=(w/2)+35:y=35,drawtext=fontsize=12:fontcolor=white:fontfile=/Windows/Fonts/arial.ttf:text='vid3':x=35:y=(h/2)+35,drawtext=fontsize=12:fontcolor=white:fontfile=/Windows/Fonts/arial.ttf:text='vid4':x=(w/2)+35:y=(h/2)+35" output.mp4

  (Same command just multiple lines only for readability)

  ffmpeg.exe -i video1.mp4 -i video2.mp4 -i video3.mp4 -i video4.mp4 
  
  -filter_complex "[0:0]scale=iw/2:ih/2,pad=iw*2:ih*2[a];[1:0]scale=iw/2:ih/2[b];
  
  [2:0]scale=iw/2:ih/2[c];[3:0]scale=iw/2:ih/2[d];[a][b]overlay=w[x];
  
  [x][c]overlay=0:h[y];[y][d]overlay=w:h,drawtext=fontsize=12:fontcolor=white:
  
  fontfile=/Windows/Fonts/arial.ttf:text='vid1':x=35:y=35,drawtext=fontsize=12:
  
  fontcolor=white:fontfile=/Windows/Fonts/arial.ttf:text='vid2':x=(w/2)+35:y=35,drawtext=fontsize=12:fontcolor=white:
  
   fontfile=/Windows/Fonts/arial.ttf:text='vid3':x=35
  
  :y=(h/2)+35,drawtext=fontsize=12:fontcolor=white:
  
  fontfile=/Windows/Fonts/arial.ttf:text='vid4':x=(w/2)+35:y=(h/2)+35" output.mp4

  I had trouble adding the 2 other movies, I know you add this

  ffmpeg.exe -i video1.mp4 -i video2.mp4 -i video3.mp4 -i video4.mp4 -i video5.mp4 -i video6.mp4

  and this

  -filter_complex "[0:0]scale=iw/2:ih/2,pad=iw*3:ih*2[a];

  but positioning the last 2 movies and text is where I am lost

  image per request [edit]
  of what I want to do in organizing the overlays