Sxs cam tr
Tapeless camcorders that record onto solid-state memory cards, use MP4 container for high definition audio/video, and DV-AVI container for DV video.
JVC camcorders that use XDCAM EX recording format, are also capable of recording into Quick Time container besides using MP4 container.
In September 2008, JVC announced its alliance with Sony to support the XDCAM EX format.
In August 2009, Convergent Design began shipping the nano Flash Portable Recorder, which uses the Sony XDCAM HD422 codec.
MPEG HD422 doubles the chroma horizontal resolution compared to the previous generations of high-definition video XDCAM formats.
To accommodate the improved chroma detail, video bitrate has been increased to 50 Mbit/s. Proxy AV is used to record low resolution proxy videos.
In 2008, Sony introduced a new recording medium to their XDCAM range – Sx S Pro (pronounced "S-by-S").
It is a solid-state memory card implemented as an Express Card module.
The XDCAM format uses multiple video compression methods and media container formats.
DVCAM uses standard DV encoding, which runs at 25 Mbit/s, and is compatible with most editing systems.
Some camcorders that allow DVCAM recording can record progressive-scan video.
This unit is designed to have the same performance as the Sx S Pro card however its life expectancy is shorter at an estimated 5 years of life when used every day to the card's full capacity. These have a 1.2 Gbit/s read and write speed to support the PMW-F55 in storing 4K 60p acquisition.
I've had problems with other dashcams, mainly I would find missing portions of my drive, usually the portions I wanted to have video of.