title: Video metadata edit with Ffmpeg
body: <p>I want to change the video metadata.</p>
  
  <p>Orginal video info(ffmpeg -i video.mp4)</p>
  
  <pre><code>     Metadata:
      major_brand     : mp42
      minor_version   : 0
      compatible_brands: isomavc1mp42
      creation_time   : 2007-11-22 09:11:58
    Duration: 00:00:52.70, start: 0.000000, bitrate: 235 kb/s
      Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 107 kb/s
      Metadata:
        creation_time   : 2007-11-22 09:11:58
        handler_name    : (C) 2007 Google Inc. v06.24.2007.
      Stream #0:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 140x96 [SAR 1:1 DAR 35:24], 125 kb/s, 10 fps, 10 tbr, 10k tbn, 20k tbc
      Metadata:
        creation_time   : 2007-11-22 09:11:58
        handler_name    : (C) 2007 Google Inc. v06.24.2007.
  </code></pre>
  
  <p>My ffmpeg shell code:</p>
  
  <pre><code>ffmpeg -i test.mp4 -metadata handler_name="Ahmetka" -i logo.png -filter_complex "overlay=(main_w-overlay_w):(main_h-overlay_h)" output.flv
  </code></pre>
  
  <p>Output video info(ffmpeg -i output.flv)</p>
  
  <pre><code>    Input #0, flv, from 'output.flv':
    Metadata:
      major_brand     : mp42
      minor_version   : 0
      compatible_brands: isomavc1mp42
      creation_time   : 2007-11-22 09:11:58
      encoder         : Lavf54.11.100
    Duration: 00:00:53.60, start: 0.000000, bitrate: 212 kb/s
      Stream #0:0: Video: flv1, yuv420p, 140x96, 200 kb/s, 10 tbr, 1k tbn, 1k tbc
      Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
  </code></pre>
  
  <p>How can I do?</p>