Yes, MLB.TV, MLB.TV Premium, and MLB.com Gameday Audio use Adobe Flash Player and are all compatible with Mac OS X. Adobe Flash Player can be downloaded and installed here..

MLB.TV and MLB.com Gameday Audio content works best on Mac OS X with Safari, Firefox, and Google Chrome.

For more information, see our System Requirements.

No, Adobe Flash Player 10 (and above) is not compatible with Windows 95, 98, or ME. Adobe Flash Player 10 (and above) is compatible with Windows 2000, XP, Vista, and Windows Server 2003. For more information, see our System Requirements.

Yes they can. If you are using a VPN Connection or Proxy and are having problems with MLB.TV or MLB.com Gameday Audio, then you should disable them and try to access the game again.

Game links for live and archived audio and/or video cause another browser window, which contains our media player, to pop up. If you have a Pop-Up Blocker enabled, whether in your browser or through a separate program or add-on, you may need to either disable the Pop-Up Blocker or add "*.mlb.com" (without the quotation marks) to the blocker's Exceptions List.

If you have any Internet security programs (e.g., Kaspersky, Norton, McAfee), Firewalls or add-ons (e.g., IE7 Pro, Google Toolbar) that include a Pop-Up Blocking feature, you may need to either disable the Pop-Up Blocking feature or disable the program entirely.

For information on how to disable the pop-up blocker built in to your browser, click here.

First, make sure that you have the latest version of your browser and Adobe Flash Player installed, which you can download here. If you are still having problems, disable Hardware Acceleration within Flash Player:

1. Right click on the video and choose "Settings"
2. Under the left most tab are the Display settings, in here, uncheck the box for "Enable Hardware Acceleration", then click "Close".

If that does not help, delete your Flash Cache by going to this page and click "Delete All Sites".

If you have any Internet Security Programs (e.g., Kaspersky, Norton, McAfee), Firewalls or add-ons (e.g., Adblock Plus) that include an Ad-Block feature, you may need to either disable the Ad-Block feature or disable the program entirely. In addition to Adblock Plus, other Firefox add-ons which can prevent the media player from loading properly are Flashblock and NoScript. If you are having problems with the Media Player and have these add-ons installed, disable or uninstall them.

You may also be behind a firewall that is stopping the content. To receive MLB.com content, we recommend setting MLB.com as a trusted site in your firewall software. Please consult the Help section of your firewall software for further support.

If you are still having problems you may need to disable your firewall software or find out if your network (especially if you are in an office) prevents MLB.com or MLB.com features (such as videos) from loading.

If you see only a plug-in prompt or a message that reads, "You are watching MLB.com..." it is likely that the stream you are trying to watch is not yet active. Please confirm the game has started; if so, wait five minutes and check the link again.

Please confirm that other people are not using your account. If you have shared your account information with other people, then you may be prevented from logging in to your account. If you are worried that others are accessing your account, you should change your password under your account profile.

The best way to prevent this error is to log out of MLB.com every time you are finished watching games by clicking the Logout button on the top right of any MLB.com page. The next time that you would like to watch a game you will be prompted to log in before the game launches.

If you have already seen this error message, and you are sure that no one else is using your account, log out of MLB.com, close all of your open browser windows and exit your browser. Next, re-launch your browser, and click on the game that you would like to watch in the Multimedia Center, where you will be prompted to log in again.

The MLB.TV Media Player is designed to automatically choose the best video quality setting for you based on the speed of your connection. Nevertheless, you have the option to adjust the video quality setting. All MLB.TV subscribers can select from our full range of optional video quality settings. Adjusting the quality settings can be done by clicking on the "Video Quality" section in the bottom bar of the media player. You can then select the level of quality you would like.

If there is a reduction in your bandwidth while watching the game, or you have manually chosen a quality level that is too high and leading to unstable video, the media player will recommend that you choose a lower quality level during playback to provide you with a smoother experience. Follow the player recommendations for better performance.

For an optimal viewing experience we recommend that you install the latest version of Adobe Flash Player. In addition, we recommend you install NexDef for additional features, such as live game DVR capabilities and improved bandwidth management. When playing a live or archived MLB.TV game, if the media player continues to buffer, repeatedly reconnect, or shows only a frame-by-frame "choppy" feed, then there may be a problem with the bandwidth (speed) of your connection. MLB.TV standard content is streamed at a minimum of 500kbps, so your bandwidth must be consistently pulling 500kbps to receive a feed. High quality MLB.TV content is streamed within 1800kbps to 3Mbps and your bandwidth must be consistently pulling 90% of the streaming rate to receive a high-quality video feed.

For an accurate reading of your connection speed, use our bandwidth test. Bandwidth fluctuates, so perform multiple tests. Keep in mind the test results reflect your bandwidth at the time of testing. Your bandwidth may be different at another time, e.g. the following day or even a few hours later. The recommended bandwidth for MLB.TV standard content is 1200kbps; the recommended bandwidth for higher quality MLB.TV content is 1800kbps and above. A user connecting below 800kbps may receive video, but will likely experience choppy feeds. If you are not consistently testing above 800kbps, you may want to contact your Internet Service Provider.

Finally, if you have implemented the above recommendations and still experience a poor quality video feed, heavy Internet traffic may be the problem.

If you continue to experience difficulties, please contact MLB.TV Customer Support toll free in the U.S. and Canada at 866-800-1275 (International customers can dial 512-434-1542). Please be prepared to provide the following information:

1. Your full name.
2. Your phone number.
3. Your MLB.com registered email address.
4. Your Operating System. (Windows XP, Vista, 7 MAC 10.5.x, 10.6.x, etc.)
5. The browser you are using and its version number. (To find out version, pull down the browser's Help menu and select About.)
6. Your Internet Service Provider.
7. Your connection type.
8. Your IP address*.
9. The results of your bandwidth tests.
10. Your location. (Home, office, wireless, etc.)
11. Time of access.
12. Game you are attempting to access.

* To look up your IP Address click here.

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You may view games with an HD quality picture if the source feed is distributed in HD, you are an MLB.TV or MLB.TV Premium subscriber, and have installed NexDef and Adobe Flash Player. For an optimal viewing experience we recommend that you install the latest version of Adobe Flash Player. Our highest quality HD feed requires an Internet connection with a consistent bandwidth of at least 3Mbps. If you do not have this amount of bandwidth, we recommend choosing one of our lower quality HD streams. If you are unsure what the bandwidth of your Internet connection is, you can check with our bandwidth test.

Live Game DVR functionality requires the installation of NexDef on your computer. Though Adobe Flash Player includes most of the features of our media player, NexDef is required for live game DVR functionality.

Click yes in the message box to install the new version of Adobe Flash Player. Then follow any necessary steps to complete the installation. After the update has completed, you will be able to load the game.

First, try lowering the level of video quality and see if it gives you a more consistent feed. If you are still having problems, make sure you have the latest version of Adobe Flash Player installed. You can download the latest version here, and haven't already done so, you should install NexDef.

Adjust your video quality settings within the media player by clicking on "Video Quality" on the bottom of the media player, then uncheck the option to "Detect and Recommend Best Quality for Me". After un-checking the box, manually select a lower quality level than the one that the player has currently selected. If you continue having problems, keep lowering the quality level until the video is playing smoothly.

If you are still having problems, try viewing the games in another browser. Keep in mind that on Windows, the installation for Adobe Flash Player is separate for Internet Explorer and Firefox (or any other Internet browser), so you may need to install Adobe Flash Player in the new browser. If your software is up to date, then within the media player, disable the option to "Automatically Adjust Quality", Next manually select a quality level for the player to stay on for the rest of the game. If you are still having this problem after a few minutes, select lower quality levels until the video quality is stable and consistent.

In addition, you should close any sites or programs that are open on your computer or network, as these may slow down your Internet connection. For instance, downloading music or movies from an online store, or playing online games on a computer or video game system are all activities that may slow down your connection and negatively impact MLB.TV performance. To make sure you have a fast enough connection at the moment, check the speed of your Internet connection with our bandwidth test.

If no other programs or sites are running and your connection is slow, power cycle your modem and/or router. To do this, unplug your modem, as well as any wired or wireless router you are using, for about 10 seconds. Then re-plug the device(s). Wait a few minutes as your Internet connection resets and, then, try to view the game again. Finally, if you are still having problems and/or the media player itself is reacting slowly, check to make sure your computer is compatible with our System Requirements.

The game probably ended when you switched windows. Check to see if the game is officially over. If not, exit Mosaic Mode and then re-enter and select the game again.

Here are the key differences between streaming and downloading video:

1. Streaming - MLB.TV and MLB.TV Premium content
   1. Streaming video starts playing almost immediately when you begin play. There will be a little bit of "buffering" (as your computer makes the connection and starts the data flowing from the server that is feeding the video) and then the video begins playing.
   2. Video is offered in a range of bit rates: 400kbps - 3Mbps. You must have an Internet connection fast enough to allow at least 4000kbps to stream into your computer in order for the video to play smoothly.
   3. The quality of the picture you see depends on the speed of your Internet connection.
   4. The video is not stored on your computer's hard drive. You are watching a "link" to another site (where the video footage is stored) as it is delivered ("streamed") to your computer in real-time.
2. Downloading - MLB.com/Downloads content
   1. MLB.com/Downloads content does not start playing when you first click on a game link. You must purchase the game file in the Apple iTunes Store, at which point the entire file is downloaded to and stored on your computer. Once the download is complete, you can begin playing the file from your computer's hard drive.
   2. Downloading a full game file can take anywhere from fifteen minutes to two hours, with even the fastest Internet connection. Interruptions in your Internet service can cause a longer download time. How soon you can start watching the video footage will depend on the speed of your connection.
   3. The video quality of the downloaded file is very high and there should not be any interruptions based on a poor Internet connection because you are playing it from the hard drive on your computer, rather than accessing the Internet to play the file.
   4. To store a complete nine-inning game, you will need enough hard drive space to store a roughly 550MB file. A complete nine-inning game is a large file, and if you do not have enough hard drive space, you will not be able download and watch the video.

1. Windows:
   1. Use the necessary video cable to connect your computer to your television. An adapter may be necessary.
   2. Turn off alarm
   3. If you are not connecting your computer to your television with an HDMI cable, to send audio from your computer to your television or sound system, connect your computer's Audio Out or Headphone jack to your television or sound system's corresponding Audio In jacks.
   4. Switch your TV to the channel necessary for viewing the input from the connection you used. This can usually be done via the Source, Video, or Input buttons on your remote (the correct button is specific to the television). If you are using a desktop and the TV is the only display you are using on your computer, skip to step 8.
   5. In the Start menu go to Control Panel or Settings and then Control Panel.
   6. In Windows XP double click on the Display icon, and then choose the Settings tab for the display settings. In Windows Vista, choose Personalization and then Display Settings.
   7. Choose your television from the drop down menu under the word "Display" (if you do not see another monitor listed, restart your computer). Check the boxes next to "Extend my Windows desktop on to this monitor" and "Use this device as my primary monitor". Hit Apply.
   8. Launch a game, choose to view it in full screen by clicking on the Full Screen icon on the bottom right of the player.
2. Macintosh:
   1. Use the necessary video cable to connect your computer to your television. An adapter may be necessary.
   2. If you are not connecting your computer to your television with an HDMI cable, to send audio from your computer to your television or sound system, connect your computer's Audio Out or Headphone jack to your television or sound system's corresponding Audio In jacks.
   3. Switch your TV to the channel necessary for viewing the input from the connection you used. This can usually be done via the Source, Video, or Input buttons on your remote (the correct button is specific to the television). If you are using a desktop and the TV is the only display you are using on your computer, skip to step 7.
   4. Open System Preferences and click Displays. If your display hasn't already been detected and functioning, click on the "Detect Displays" button.
   5. Click on the Arrangement tab. Set up the correct alignment between your computer display, and the TV. Then drag the menu bar on the current primary display over to the display representing your television. This will set your TV as the primary display.
   6. If you would like to change the screen resolution and attempt to improve the image, you can do so by clicking on a different resolution under "Resolutions" in the Display window that is open on your TV. Keep in mind that Apple already detects and implements the native resolution for the display.
   7. Launch a game, choose to view it in full screen by clicking on the Full Screen icon on the bottom right of the player.

If you receive spinning circles in the media player when you try to launch a game, restart the NexDef process via the following instructions:

Windows:
1) Simultaneously press CTRL-ALT-DEL on your keyboard.
2) Select the Task Manager
3) Within the Task Manager click on "nexdef.exe". It may be easier to find if you organize the listings by name by clicking on the Image Name tab.
4) Once "nexdef.exe" is selected, click on the "End Process" button. Click yes to quit the process if prompted.
5) Restart NexDef by going to the Start Menu, select All Programs, go to the Startup Folder, and click on "NexDef Plug-in".
6) Restart the game. If it still is not working, restart your computer and try launching the game again.

Mac OSX:
1) Go to the Applications folder, and then the Utilities folder, in the Utilities folder launch the Activity Monitor.
2) In the Activity Monitor select "MLBNexDefAutobahn" or use the search bar on the top right and search for NexDef. When it comes up, click on "MLBNexDefAutobahn" and then click on the Quit Process button on the top left of the window.
3) In the prompt that comes up, choose Force Quit (or Quit if that is the only option).
4) Restart the game. If it still is not working, restart your computer and try launching the game again.

If that does not help, click on the gear icon on the bottom right of the media player, choose "Settings", and uncheck the option to "Enable NexDef by default". Then close the media player and try to watch the game again.

DISCLAIMER REGARDING CHANGING YOUR COMPUTER'S CONFIGURATION: Any change you make to your configurations is at your own risk. In no event shall MLB.com or any other MLB entity be responsible or liable for any damage, failure, interruption or error to your computer, software and/or operating system with respect to any changes made based on the above suggested configurations.

You probably have an older version of Adobe Flash Player installed. Upgrade your Flash Player to the latest version by clicking here, then close and restart your browser.

Re-launch the player and the full screen message should now go away after a few seconds.

This may be due to a problem that occurs between Adobe Flash Player and laptops with Synaptics touchpad drivers. If this happens to you, simply hit the space bar and your touchpad should start working again.

1. First, make sure that you have the latest version of Adobe Flash Player installed.
2. Then, increase your local Flash Storage for MLB.com:
   1. Right click on the video and select Settings from the menu that comes up.
   2. Click on the folder icon for Local Storage settings.
   3. Raise the amount of allowed information to 10MB. If you still have problems try Unlimited.
   4. Uncheck the box next to "Never Ask Again" and click Close.

You can also update these settings here.

If you continue to have problems, disable Hardware Acceleration within Flash Player:

1. Right click on the video and choose "Settings"
2. Under the left most tab are the Display settings, in here, uncheck the box for "Enable Hardware Acceleration", then click "Close".

If you are receiving a gray screen with the silhouette of the MLB batter logo in the player please try the following:

First, disable any Ad Blocking features or plug-ins that you may have enabled in your browser or security programs. If you are using Firefox, disable the following plug-ins if you are using them: AdBlock Plus, FlashBlock, and NoScript.

If you are still having problems starting a game, restart the NexDef process via the following instructions:

Windows:
1) Simultaneously press CTRL-ALT-DEL on your keyboard.
2) Select the Task Manager
3) Within the Task Manager click on "nexdef.exe". It may be easier to find if you organize the listings by name by clicking on the Image Name tab.
4) Once "nexdef.exe" is selected, click on the "End Process" button. Click yes to quit the process if prompted.
5) Restart NexDef by going to the Start Menu, select All Programs, go to the Startup Folder, and click on "NexDef Plug-in".
6) Restart the game. If it still is not working, restart your computer and try launching the game again.

Mac OSX:
1) Go to the Applications folder, and then the Utilities folder, in the Utilities folder launch the Activity Monitor.
2) In the Activity Monitor select "MLBNexDefAutobahn" or use the search bar on the top right and search for NexDef. When it comes up, click on "MLBNexDefAutobahn" and then click on the Quit Process button on the top left of the window.
3) In the prompt that comes up, choose Force Quit (or Quit if that is the only option).
4) Restart the game. If it still is not working, restart your computer and try launching the game again.

DISCLAIMER REGARDING CHANGING YOUR COMPUTER'S CONFIGURATION: Any change you make to your configurations is at your own risk. In no event shall MLB.com or any other MLB entity be responsible or liable for any damage, failure, interruption or error to your computer, software and/or operating system with respect to any changes made based on the above suggested configurations.

To resolve this issue, disable Hardware Acceleration within Flash Player:

1. Right click on the video and choose "Settings"
2. Under the left most tab are the Display settings, in here, uncheck the box for "Enable Hardware Acceleration", then click "Close".

After disabling Hardware Acceleration close the game and then relaunch it.

Disclaimer Regarding Changing Your Computer's Configuration:
Any change you make to your configurations is at your own risk. In no event shall MLB.com or any other MLB entity be responsible or liable for any damage, failure, interruption or error to your computer, software and/or operating system with respect to any changes made based on the above suggested configurations.

Restart the angle that is out of sync. To do this, drag the feed from the camera angles list in to its window so that the feed restarts. or example, if you have the Mosaic feature (quad view) open with four feeds and Center Field seems behind, drag Center Field from the cameras list to that window again so that it reloads the feed. If multiple feeds seem out of sync, please do this with all of the feeds that are behind.

If this does not resolve the issue, return the player to single view, click on Video Quality, and disable NexDef. Then, return to your preferred viewing option and launch the camera angles again.

If the media player opens to a blank white screen which may play audio but no video when you try to watch a game, you should disable Hardware Acceleration in Adobe Flash Player. First, make sure that you have the latest version of Adobe Flash Player installed. Then, disable hardware acceleration in Flash Player by loading a highlight video on MLB.com, right click on the video, choose "Settings", click on the first tab in the window that comes up, and uncheck the option to "Enable hardware acceleration", then click "Close". After disabling hardware acceleration, try watching a game again.