Memory Card Recording Time - System Technology

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Memory Card Recording Time

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Memory card estimated recording time in HD resolutions

In this article you will find the estimated recording time on an SD card, depending on its storage capacity, the most common recording resolutions and also the frame rate (FPS). The 24 FPS frame rate is usually used in cinema, but many camcorders record at 30 or 60 FPS which offers a much smoother motion. It is recommended that the SD card be reset periodically for proper recording, and using several smaller cards instead of a very large one.
Memory Card Recording Time
VIDEO RESOLUTION
MEMORY CARD SIZE
RECORDING TIME
4K
60 fps
(9.25 MB/sec)
16 GB
0:29 Hours
32 GB0:58 Hours
64 GB1:55 Hours
128 GB4:44 Hours
256 GB7:41 Hours
VIDEO RESOLUTION
MEMORY CARD SIZE
RECORDING TIME
4K
24-30 fps
(7.5 MB/sec)
16 GB
0:35 Hours
32 GB1:11 Hours
64 GB2:22 Hours
128 GB4:44 Hours
256 GB
5:55 Hours
2.7K
48-60 fps
(7.5 MB/sec)
16 GB
0:35 Hours
32 GB1:11 Hours
64 GB2:22 Hours
128 GB4:44 Hours
2.7K
24-30 fps
(5.6 MB/sec)
16 GB
0:47 Hours
32 GB1:35 Hours
64 GB3:10 Hours
128 GB6:20 Hours
1080p
120 fps
(7.5 MB/sec)
16 GB
0:35 Hours
32 GB1:11 Hours
64 GB2:22 Hours
128 GB4:44 Hours
1080p
60 fps
(5.6 MB/sec)
16 GB
0:47 Hours
32 GB1:35 Hours
64 GB3:10 Hours
128 GB6:20 Hours
Speed Class and UHS Speed Class. The speed class is the minimum speed guaranteed by SDHC / SDXC cards. Choosing the speed class is essential for HD video recording, where the camera saves a constant stream of data. Thus the resolution and format of the video determines the amount of data in constant flow. You need to consult your camera's user manual for the correct choice of SD card according to the minimum recommended speed class for HD video modes.
Difference between Speed Class, UHS Speed Class, Speed Ratings and Video Speed Class for SD/SDHC/SDXC cards. The speed rating measures maximum transfer speed for reading and writing images to and from a memory card, expressed as megabytes per second. However, video doesn't need as big a data pipe because the video format is a smaller "fixed stream" that uses only a portion of the data pipe.

Unlike card write speeds that measure maximum performance, class ratings measure the minimum sustained speed required for recording an even rate of video onto the card. The class rating number corresponds to the transfer rate measured in megabytes per second. Class 2 cards are designed for a minimum sustained transfer rate of 2 megabytes per second (MB/sec), while Class 10 cards are designed for a minimum sustained transfer rate of 10MB/sec.
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