When to use

Audio file Formats in Multimedia

You can play the following types of multimedia in PDFs created using Adobe Acrobat DC or Adobe Acrobat Reader DC or earlier:

Includes MOV, M4V, 3GP, and 3G2 video files that use H.264 compression. It also includes FLV, F4V, MP3, and MP4 files. You must have H.264 codecs installed on your computer to play files that use H.264 compression.

You can play these files on a page or activate them from a link, bookmark, form field, or page action. Each multimedia file includes a play area from which the media can be activated. The play area typically appears on the PDF page as an image or a rectangle, but can also be invisible.

Acrobat and Reader also let you play legacy multimedia files created using an earlier version of Acrobat. These include QuickTime, MPEG, ASF, RAM, and Windows® Media files. However, Acrobat and Reader X do not provide a way to create legacy multimedia files.

Two types of PDF files require you to set multimedia preferences:

These files require you to identify an additional media player with which to run the multimedia.

Open the Preferences dialog box, and then select Multimedia (Legacy) from the left side of the dialog box.

Choose the format in which you want to run legacy media content: QuickTime, Flash, Windows Media, or Windows built-in player.

Specify if you want special features (if available) to appear when media plays, such as subtitles and dubbed audio. Specify the preferred language for the media, in case multiple languages are available.

Acrobat and Reader play most multimedia files, such as audio or video, using the built-in media player. (For the supported file types, see .) Multimedia content that requires additional resources to play, such as an external player or plug-in, is considered “legacy” multimedia content. You can control the use of external players or plug-ins in the Multimedia Trust (Legacy) preferences.

(Acrobat and Reader 10.1.1 or earlier) In Multimedia Trust preferences, you can specify whether to play embedded multimedia files in trusted or non trusted PDF documents. A trusted document is a document that you or an author you trust has approved. By setting your permissions to play multimedia only in trusted documents, you can prevent programs, macros, and viruses from potentially damaging your computer.

The list of trusted documents and authors is stored internally and can’t be viewed. If you add a certified document to the list, both the document and the certificate of the author are added to the list of trusted documents. All documents that this author certified are trusted. (Trusted documents also include PDFs from authors in your list of trusted identities.)

In the Preferences dialog box, select Multimedia Trust (Legacy) from the Categories.

(Acrobat and Reader 10.1.1 or earlier) Display Permissions For

Choose to set permissions for either trusted documents or other (non trusted) documents.

Allow Multimedia Operations

Select this option to allow media clips to be played. When selected, you can change the permission settings for a particular player and enable options that determine the appearance of the media during playback.

Change Permission For Selected Multimedia Player To

Select the player from the list, and then choose one of the following options from the menu:

(Acrobat and Reader 10.1.1 or earlier) Clear Your List Of Trusted Documents

Deletes the current list of trusted documents and authors. Use this option to prevent media from playing in documents that were previously trusted documents or created by trusted authors. This option is available only when a PDF that contains multimedia is open.

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