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• Convert .mov (ios7) to format playable on android 4.2.1

  29 novembre 2013, par user3048419

  I have got an iphone with ios7 and an android with 4.2.1. I want to take a video on the iphone and then play it later on the android. I am converting (via Ubuntu 13.04) the .mov video from the iphone into an mp4 format via the following (taken from Encoding video for Android) :

  avconv -i <input />.MOV -vcodec libx264 -profile:v baseline -b 500k -r 30 -vf "setsar=1:1" -acodec libvo_aacenc -ac 2 -ar 44100 -ab 128k <output>.mp4
  
  </output>

  Unfortunately <output>.mp4</output> does not seem to play on the android phone (android 4.2.1). Does anyone have any suggestions on how I can convert the .mov file into a format playable on android ?

• Microsoft SmoothStreaming video on Apache ?

  2 juin 2014, par earizon

  I created what I consider to be a valid smooth streaming output using ffmpeg with the smooth streaming muxer and also alternatively through the ismindex utility (included in ffmpeg sources).

  I’m trying to use an standard web server like Apache instead of IIS and its S.S. extensions. The output is segmented content (each fragment is split to is own file) so theoretically this is possible. Now comes my first problem where I’m stuck.

  How can I test the result using for example a Window Phone 8 ?. I tried to open the index.ism url from I.Explorer, but the extension ism and the mime-type (application/vnd.ms-sstr+xml) is not recognized and I.Explorer just dump the xml instead of opening the media player.
  I was waiting for a similar behaviour to that of Android/iOS when the (HLS) index.m3u8 URL is clicked. In this case the browser/OS detects the extension and open the player.

  Thanks in advance for any help, hint or link !

• FFmpeg recorded video is dark with Xvfb and chrome headless on Centos 7

  15 juin 2023, par narsy4

  I am trying to do a video recording of headless chrome session on Centos 7 (Amazon EC2 instance) using ffmpeg. I have installed ffmpeg, Xvfb and google chrome on the machine. I started Xvfb on :99, verified the display using xdpyinfo and started chrome. However when I run the ffmpeg cmd to capture the video (no errors in ffmpeg debug logs), the output is dark with a X sign in the centre of video screen. What am I doing wrong here ? Any help is appreciated.

  


  **Xvfb and chrome commands**
Xvfb :99 -screen 0 1920x1080x24 &
export DISPLAY=:99
google-chrome --headless --disable-gpu --no-sandbox --start-maximized --window-size=1920x1080 https://www.google.com



  


  **FFmpeg command**
ffmpeg -video_size 1920x1080 -framerate 30 -f x11grab -i :99 -loglevel debug -pix_fmt yuv420p /tmp/video.mp4



  


  dark video

  


  Searched for and read a few threads on this, but couldn't get it to work.