File size limits can be a bit tricky as some hosting companies set limits that cannot be easily overridden. Try the steps below one-at-a-time and in order and if they do not work, then call your hosting company and ask them to increase your limit.

1. You could also try adding this to your index.php file.
ini_set('memory_limit','128M');
ini_set('post_max_size','1024M');
ini_set('upload_max_filesize', '1024M');
set_time_limit(120);

2. Add the following lines to the php5.ini file located at the root of your Concrete5 site (you may need to create this file).

file_uploads = On
upload_max_filesize = 1024M
post_max_size = 1024M
upload_tmp_dir = /tmp/

3. If that doesn't work, locate your .htaccess file or create one in your Concrete5 root and add these lines:

php_value upload_max_filesize 1024M
php_value post_max_size 1024M

4. Contact your hosting company and ask what limits they have set.

vanhollymorgan,

For anyone else who finds this, you can always upload them to youtube or vimeo, which is free. Then add a youtube or vimeo block to your site. When the videos are played it will use their bandwidth instead of your host, as many have monthly limitations.

Here are some simple guides I did:

Adding a youtube block -
http://www.webhostinghub.com/support/edu/concrete5/images-and-video...

Adding a Vimeo block -
http://www.webhostinghub.com/support/edu/concrete5/images-and-video...

I hope this helps,
John-Paul