To find this information you might have to do some research or test the drives on your own.Ī component of write speed is access time. When recording video we are more concerned with write speed, how fast we can write data to the drive. Read speed is how fast data can be read from the drive. Drives that are marketed as high-speeds usually have their read speed listed. Once you know what size drive you’ll need, you’ll need to make sure its fast enough, unfortunately finding that our isn’t as easy as it should be.
(kbps / 80,000) * (60 * minutes of record time) = GB’s of space requiredĨ0,000 is the 8 to convert bits to bytes and the 10,000 required to turn KB to GB (mbps / 8,000) * (60 * minutes of record time) = GB’s of space requiredĨ,000 is the 8 to convert bits to bytes and the 1000 required to turn MB to GB Once you have your bitrate you can calculate your required capacity manually or by using the chart below. Medium Quality HD 27000Kbps / 27Mbps 11.3 High Quality Standard Definition 7000Kbps / 7Mbps 2.9 Low Quality Standard Definition 3000Kbps / 3Mbps 1.3 High Quality Standard Definition 4000Kbps / 4Mbps 1.7 Low Quality Standard Definition 2000Kbps / 2Mbps 0.8 Sometimes its just listed as low, medium, and high in which case you can use the guide listed below.įor Rugged Video systems our bitrates are as follows:
How do I find my bitrate?īitrate should be listed in your recorder manual and can usually be set by the user in a system menu or config file. There are 8 bits to every 1 byte, so if a video is recording at 8mbps this is the same as recording at 1MBps. Notice that this is measured in bits, represented by a small “b”, and not bytes represented in an upper case “B”. What is bitrate?īitrate is typically measured in Mbps(Mb/s) or Kbps(Kkb/s) which stands for megabits per second, and kilobits per second. There are other factors like compression algorithm, profile, resolution, etc. In a very general sense video quality is measured in bitrate which is the amount of data per second that is being captured. This step is fairly simple, you just need to know how long you will be recording for and in what video quality.
We recommend USB 3.0 drives because the performance even in a USB 2.0 port exceeds that of other USB 2.0 standard drives. All Rugged Video systems use standard USB 3.0 drives, even though some systems have USB 2.0 ports. However some systems may recommend a specific drive. Normally recorders will specify a standard such as USB 2.0 and USB 3.0 allowing you to choose from a generic selection of drives. When choosing a flash drive you need to make sure the drive is compatible with your recorder. There are a few things you need to take into consideration when choosing a USB Flash Drive. This process requires massive amounts of data be written to a disk usually for long duration, much beyond the requirements of transferring and reading a few files. Recording HD and 4K video is one of the most demanding tasks that a USB flash drive can endure.