How to Accurately Calculate Video File Size (Plus: Bonus Glossary)

[800 Hours Long-time Recording] – Large capacity rechargeable 3800mAh battery of this sound recorder allows maximum 365 days stand by time, continuous recording for 50 hours after each fully powered; 8GB memory can totally store up to 800 hours recording files.

The primary media is a non-removable 8GB flash media. Using only this media, you’ll get approximately 88 minutes of video in the highest quality and 533 minutes in the lowest quality.

For HD/Full HD video recording, you need up to U3, V30 rating. For 4K videos, you need an SD card with video speed class V30 and above. Lastly, for 8K video recording, you need at least a V60 video speed class rating.

A: No, the brand of microSD or SD card you use will not affect sound or video quality during playback. Using a slower SD card may affect the speed at which the handoff happens, but it won’t affect the sound or video quality.

Answer: The SDXC slot can be found in many Macs. The slot allows your computer to read the SD, SDXC, and SDHC cards that are often found in digital cameras. This allows you to simply remove the SD card from your camera and put it in the SDXC slot of your computer rather than hook your camera up to the computer.

The two differ primarily in storage capacity and compatibility: SD cards work in any device with an SD slot, whereas SDHC cards can hold more data but only work in devices that support the SDHC standard. …

Additional info on SDXC cards and host devices – SDHC memory cards can be used with SDHC and SDXC host devices.

The Extreme line is newer than the Ultra line and takes advantage of advances in technology to deliver higher speeds and larger capacity suitable for even HD video. The Ultra cards are better used to store pictures because of their smaller size and lower speed.

Fastest SD Cards | Top 9 as of July 2021

• Angelbird AV Pro SD MK2 V90 UHS-II.
• ProGrade Digital V90 UHS-II.
• Sony SF-G U3 UHS-II.
• Lexar Professional 2000x U3 UHS-II.
• Sony TOUGH-G SF-G(T) V90 UHS-II.
• Toshiba Exceria Pro U3 UHS-II.
• Transcend 700s V90 UHS-II.
• SanDisk Extreme PRO U3 UHS-II.

UHS came about due to 4K-capable video devices needing faster write speeds. The SD Association has two UHS Speed Classes, UHS Speed Class 1 and UHS Speed Class 3. UHS Speed Class 1 supports a minimum 10MB/s write speed, whereas UHS Speed Class 3 supports at least 30MB/s write speed.

Any card rated as speed class U3 (UHS I or II) will comfortably cope with IPB 4K, since U3 guarantees 30MB/s sustained read/write.

There class marking comes to show how fast data can be written on card. Class 10 (10 inside C letter) and UHS class 1 (1 inside U letter) guarantee the same sustained write speed of 10 Mb/s. But UHS can usually provide faster read speed, that is marked on card separately.

UHS Speed Class Faster SDXC memory cards will have the UHS rating, or Ultra High Speed, represented by a number inside the letter “U.” U1 means it’s 10 MB/s; U3 means it’s rated at 30 MB/s.

U1 vs U3 SD Cards U1 and U3 refer to the write speed of the cards. U1 can write up to 10MB/s while U3 can write up to 30MB/s.

Best SD cards

1. SanDisk Extreme PRO SDXC UHS-I. The best all-round SD card right now, either for Raw files or 4K video.
2. Lexar Professional Class 10 UHS-II 2000X.
3. SanDisk Extreme PRO SD UHS-II.
4. Lexar Professional 633x SDHC / SDXC UHS-I.
5. SanDisk Extreme SD UHS-I Card.
6. Transcend SDXC UHS-II U3.

Top 11 Best SD Memory Cards

Memory cards have no effect on image quality, they just record 0s and 1s. Any major brand will work well with the possible exception of Lexar. Speed of the card has little to do with speed of the camera. If the camera doesn’t send the data fast enough, the card speed is totally irrelevent to image capture.

While the Samsung is the faster of the two microSD cards the SanDisk does come in many more size choices. While it feels it would be better to always go for the biggest capacity, it may be better to select several smaller cards to make sorting media easier.