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• Create and combine a blank video stream with a subtitle steam

  10 décembre 2014, par CPO

  I have a live .ts stream that contains a video stream, audio stream and subtitle stream. What I want to do is to display the video in full, eg video and audio and subtitles, but in parallel take the same stream and ’blank’ the video to black, but allow the subtitle stream to be rendered into that video stream for display separately from the fully displayed streams. The reason for this is to allow the subtitles to be displayed separately and cropped,from a second projector, but to have a black backgroung to avoid distractions when there is no subtitle present. I believe this can be achieved using FFMPEG but my limited experience with this utility rather limits my progress. I believe that the blanked video stream needs to be the same frame rate and resolution as the original in order that the rendered subtitles stay in synch with the original video stream. Any help or suggestions warmly welcomed. Thank you

• scaling a video captured in portrait mode using FFMPEG

  24 octobre 2016, par Ahmed Mujtaba

  I’m trying to rotate a video on my android app using FFMPEG and then uploading it to the server. The following command does the job for me :

  -y -noautorotate -i inputPath -vf transpose=1,scale=360:640,setsar=1 -metadata:s:v rotate=0

  The aspect ratio of the original video is 16:9. I’m trying to maintain the aspect ratio after rotation so I add padding on either side of the video to scale it properly with the following command :

  -y -noautorotate -i inputPath -vf transpose=1,scale=iw*min(360/iw\,640/ih):ih*min(360/iw\,640/ih),pad=640:360:(360-iw)/2:(640-ih)/2,setsar=1 -metadata:s:v rotate=0

  The video scales perfectly on the website but now the issue is that I can see the black bit when I play it on the android app which I don’t want. I don’t mind the black bits when I play the video on the website but on the app, it looks terrible. The container of the video on the app has height "280dp" and width of "380dp". How can I scale the video so the black sides don’t show when I play a video on the app.
  Any solutions/suggestions ?

  This is what the video looks like when I play on the website :

  

  This is what it looks like on the app

  

• Evolution #2546 : Cohérance : confirmer le mot de passe lors du changement

  14 mai 2013, par b b

  je suis plus de l’avis de fil, j’ai toujours trouvé "super relou" d’avoir à taper deux fois un mot de passe (ou un mail) dans un formulaire. Cela me semble d’autant plus inutile dans le cas d’un mot de passe car quand les deux valeurs ne sont pas les mêmes les input ne permettent pas de savoir où on s’est trompé :p