Title: [Plugin: Shadowbox JS] MP4
Last modified: August 19, 2016

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# [Plugin: Shadowbox JS] MP4

 *  [peterneuenswander](https://wordpress.org/support/users/peterneuenswander/)
 * (@peterneuenswander)
 * [16 years, 7 months ago](https://wordpress.org/support/topic/plugin-shadowbox-js-mp4/)
 * I’m trying to play MP4’s with the JW FLV Player and it only opens with QT and
   doesn’t show video only plays audio. I know the current version of JW FLV Player
   supports mp4’s. What do I need to configure to playback mp4’s with the FLV Player?

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Thread Starter [peterneuenswander](https://wordpress.org/support/users/peterneuenswander/)
 * (@peterneuenswander)
 * [16 years, 7 months ago](https://wordpress.org/support/topic/plugin-shadowbox-js-mp4/#post-1259831)
 * With the new plugin update MP4’s are visible… but not audible. Are there any 
   settings that need to be changed to hear the audio from the MP4 files?
 * Also if I try to change the size of the video by inputting rel=”shadowbox;height
   =720;width=1280″ into the html code the MP4 file is no longer viewable.
 *  [Matt Martz](https://wordpress.org/support/users/sivel/)
 * (@sivel)
 * [16 years, 7 months ago](https://wordpress.org/support/topic/plugin-shadowbox-js-mp4/#post-1259838)
 * In order to get Shadowbox to use the FLV player to play mp4 files you need to
   force it, otherwise I believe it tries to use quicktime. So if you are going 
   to try and set the height via the rel attr you also need to specify the player
   by doing: rel=”shadowbox;player=flv;height=720;width=1280;”
 * As for sound, there is no setting needed, it should just work.
 *  Thread Starter [peterneuenswander](https://wordpress.org/support/users/peterneuenswander/)
 * (@peterneuenswander)
 * [16 years, 7 months ago](https://wordpress.org/support/topic/plugin-shadowbox-js-mp4/#post-1259878)
 * That worked perfectly. Thanks for the help and the great plugin.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘[Plugin: Shadowbox JS] MP4’ is closed to new replies.

 * 3 replies
 * 2 participants
 * Last reply from: [peterneuenswander](https://wordpress.org/support/users/peterneuenswander/)
 * Last activity: [16 years, 7 months ago](https://wordpress.org/support/topic/plugin-shadowbox-js-mp4/#post-1259878)
 * Status: not resolved

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