Encoding mobile streaming video and audio for Blackberry

September 29th, 2009

  • BlackBerry® Pearl™ 8100 Series
  • BlackBerry® Curve™ 8300 Series
  • BlackBerry® 8800 Series
  • BlackBerry® Bold™ 9000

Optimal settings for the BlackBerry Pearl 8100

Video settings Audio settings
Video format: MPEG-4
Video file extension: .avi
Resolution (4:3): 240×180
Resolution (16:9): 240×135
Video bitrate: 400 Kbps
Frames per second: 24
Audio format: MP3
Audio bitrate: 128 Kbps
Sample rate: 44 kHz
Channels: 2 (Stereo)

Optimal settings for the BlackBerry 8800/8300/9000

Video settings Audio settings
Video format: MPEG-4
Video file extension: .avi
Resolution (4:3): 240×180
Resolution (16:9): 320×180
Video bitrate: 400 Kbps
Frames per second: 24
Audio format: MP3
Audio bitrate: 128 Kbps
Sample rate: 44 kHz
Channels: 2 (Stereo)

How to convert videos from the Flip camcorder to FLV

July 3rd, 2009

One of the great things about the Flip camcorder is that it saves video using the H.264 Codec. If you haven’t heard, H.264 is arguably the best quality video codec out there, renowned for its high quality, low file size, and lack of artifacting. Luckily, since the release of Flash 9, H.264 is now a web standard. So, if you want to convert your flip MP4 videos to FLV files (from their native mp4 format), all you have to do is rename from “filename.mp4″ to “filename.flv”, and the video should play back with any video player.

Also note, this applies to any mp4 video as well. If you want to convert videos from MP4 to FLV, try renaming the file before you mess with transcoding the video to FLV with a third party encoding program.

Expression Encoder 2 for Silverlight and Windows Media

March 20th, 2008

From the Microsoft Expression Encoder download site:

“Microsoft® Expression® Encoder, a feature of Expression Media, offers encoding, enhancement, and publishing of rich media experiences to Microsoft Silverlight. ”

Features Include:

Better Encoding

VC-1 advanced authoring SDK integration: by adopting the new VC-1 authoring SDK, Expression Encoder 2 is able to author better quality video faster. We’ve exposed a set of presets for tuning the encoder as well as detailed settings with comprehensive tooltips for the advanced compressionist.

New profiles, and video codecs for streaming media: Encoder 2 supports a number of new modes and codecs including Quality VBR, WMA Pro (stereo), WMA Lossless, 24 bit audio and audio/video encoding stream selection.

Does GravityLab support the FLV file format?

February 15th, 2008

The FLV file format is supported, but FLV files will be shown as progressive download only. Ultimately, this means that users will not be able to fast-forward to any part of the video that hasn’t been downloaded yet. For small files (under a minute long or so) this is not that noticeable. But if you wish to provide true streaming with longer videos, consider
having GravityLab encode and host your videos as Windows Media and Quicktime. This will ensure that your audience is receiving the optimal experience with your content. Are you absolutely convinced that you want to use flash? Contact us for a custom quote for true flash delivery using the Flash Media Server.

How to create video for mobile phones

January 23rd, 2008

GravityLab Multimedia offers several mobile video hosting plans, and many of our customers ask how they can create .3gp video files in order to stream the video to 3rd generation cell phones.

For this tutorial you will need a short clip of uncompressed video, including audio. You will also need Apple QuickTime Pro. You can buy a QuickTime Pro serial directly from Apple. Entering the serial number into the QuickTime player activates additional features in the software, including the ability to encode video to a variety of formats. See the “Buy QuickTime Pro…” option under the QuickTime player’s Help menu.
Once it is installed and running:

1. Load the uncompressed video clip using the player File > Open File… menu option.