Hello, gaminhk!

1. The straight answer is yes. However, QuickTime, the default player on Mac computers will only be able to play MP4 files encoded with MPEG-2 (OS X Lion or later), MPEG-4 and H.
2. Play M4V on Mac Smoothly using iTunes or QuickTime etc. You can take full advantage of MacX Video Converter Pro, a feature-rich M4V video converter for Mac to play M4V on Mac without issues. It lets you,. Convert M4V videos on Mac to MP4, AVI, QuickTime MOV, WMV etc. To solve M4V playback issue.
3. Cisdem Video Player for Mac. Compatibility: macOS 10.10 or later Cisdem Video Player is an incredible program playing a vast assortment of media file formats. It’s fully compatible with all popular video formats (e.g. WMV, AVI, MOV, MP4, M4V, FLV, MKV, RMVB, MPEG, etc.), as well as audio files (e.g. MP3, WMA, OGG, WAV, M4A, etc.).The software supports all those codecs ensuring the.

The all-powerful free Mac media player that can support almost all media categories and formats, like movies, videos, audios. Designed as a free DVD Player for Mac, it also supports VideoCD, MKV, MOV, AVI, FLV, WMV, MP4, MPEG, RMVB, MP3, WMA and other non-mainstream formats on all Mac OS X, including Mac OS 10.12 Sierra.

Thank you for reaching out and using the Apple Support Communities. We see from your post that your seeking a way to make your MP4 videos viewable on both Mac and Windows PCs. Having that shared compatibility between both operating systems is very important, especially when you want to share to them with others.

In this situation, the best way to ensure that both a Mac and a Windows PC can access the videos from the same external device is to make sure the device is in the correct disk format. This article explains how to format a device or disk (e.g. USB flash drive, external hard drive) into the proper format that is accessible by both Mac and Windows computers: Disk Utility 12.x: Format a disk for Windows computers

In regards to your second question, check out this article: If QuickTime Player can‘t open an audio or video file

Please let us know if this resolves your issues.

Kindest Regards.

Sep 1, 2016 10:19 AM

Using the Hand tool or the Select tool, click the playarea of the video or sound file. When the pointer is positionedover the play area, it changes to the play mode icon .

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

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

Includes audio files, such as MP3 and MP4

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

Acrobat and Reader also let you play legacymultimedia files created using an earlier version of Acrobat. Theseinclude QuickTime, MPEG, ASF, RAM, and Windows® Mediafiles. However, Acrobat and Reader X do not provide a way to createlegacy multimedia files.

Note:

To help protect yourcomputer from viruses, Acrobat asks youif you want to play multimedia files from unverified sources. Youcan change this default behavior in the Multimedia Trust preferences.

Using the Hand tool or the Select tool, clickthe play area of the video or sound file. When the pointer is positionedover the play area, it changes to the play mode icon .

Two types of PDF files require you to set multimediapreferences:

• PDF files created in Acrobat 8 and earlier.

• PDF files containing multimedia content that needs a plug-inor external player to play, rather than the built-in media player.

Thesefiles require you to identify an additional media player with whichto run the multimedia.

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

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

Specifyif you want special features (if available) to appear when mediaplays, such as subtitles and dubbed audio. Specify the preferredlanguage 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 Play multimedia.) 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 MultimediaTrust preferences, you can specify whether to play embeddedmultimedia files in trusted or non trusted PDF documents. A trusted documentis a document that you or an author you trust has approved. By settingyour permissions to play multimedia only in trusted documents, youcan prevent programs, macros, and viruses from potentially damagingyour computer.

The list of trusted documents and authors isstored internally and can’t be viewed. If you add a certified documentto the list, both the document and the certificate of the authorare added to the list of trusted documents. All documents that thisauthor certified are trusted. (Trusted documents also include PDFsfrom authors in your list of trusted identities.)

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

(Acrobat and Reader 10.1.1or earlier) Display Permissions For

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

Select this option to allow media clips to be played. Whenselected, you can change the permission settings for a particular playerand 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 thefollowing options from the menu:

Will Mp4 Play In Pro Presenter For Mac Download

Allows the player to be used without prompting.

Will Mp4 Play In Pro Presenter For Macbook

Prevents the player from being used.

Asks the user whether the player can be used. If you selectthis option and allow the player to play the media in a particulardocument, that document becomes trusted.

Three playback options enable you to control how the videois displayed.

Allow Playback In A FloatingWindow With No Title Bars

Select this option to run the video without a title bar.The result is that no title or close buttons are displayed.

Allow Document To Set Title Text In A Floating PlaybackWindow

Select this option to display a title bar when the videoplays back in a floating window. To edit the text in the title bar,double-click the video with the Select Object Tool (Tools> Interactive Objects > Select Object).Select Edit Rendition, and then on the PlaybackLocation tab, select Show Title Bar.Add the title bar text in the Title text field.

This option automatically plays the video in full screenmode when it is played back. Full screen display can conflict with end-usersecurity settings.

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

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