Viofo A119 V3 Setup Tips

The narrow field of view A119 V3 Lens actually pulls objects closer making them appear larger than wide angle Lens. This also reduces side distortion and eliminates fisheye effect producing more realistic video. The F1.6 Aperture Lens and larger 1440p 5-MegaPixel sensor is best angled slightly down on hood to capture less sky and brighten ground.

For superior detail and clarity select 2560x1440p resolution.  Most 1080P SmartTVs can't display 2K video footage, but all computers resize video to fit screen size, some browsers may not support 1440p or higher resolutions.

The A119 V3 firmware contains hidden High Efficiency Video Coding (HEVC) H.265 compression codec.  The difference between standard H.264 and H.265 is the reduced video file size and increased detail using HEVC codec. Depending on the lighting and scene composition H.264 uses 16x16 macro blocks to compress areas with no details such as sky or road but H.265 uses 64x64 variable blocks to further compress low detail areas. Along with other improvements H.265 also provides bitrate reduction as much as 50% compared to H.264 while maintaining the same image quality with slightly increased detail and brightness.

HEVC H.265 compression requires more A119 V3 system resources to record clips generating more heat and not recommended for HOT seasons. H.265 also requires more processing power to view than H.264 MP4 video, its also very difficult to preview while video editing or even viewable with most GPS / G-sensor MP4 players. H.265 does have a huge benefit for reducing large 4K video files in other 'Pro' models. I prefer the compatible MP4 video format H.264 AVC codec with larger file size its easier to view, edit and share.
The HEVC H.265 compression feature will remain hidden from MENU even on new A129 Pro 4K model dashcam, think of it as a "Pro" feature for experienced owners. The hidden H.265 HEVC codec is enabled by stopping Recording, then long press MIC button for 3 seconds, then enter the MENU, select the Resolution settings, they are all now H.265. I suggest only using 1440p since the 2160p is interpolated. To disabled H.265 compression repeat the MIC long press sequence.

As part of regular Maintenance owners should :
- format Memory card every 3 months.
- after each Firmware Update reset Default Settings.
- clean GPS module contact plate after hot summer months.
- always insert and eject microSD card while Dash Camera is Off.

Best YouTube video play back Setting :
Viewing 2K or 4K high resolution videos on YouTube can overwhelm browsers and video processors with stutter or not supported depending on Operating System and device. Change YouTube's play back Quality Setting to highest 1080p or 1440p or 2160p when available for best viewing experience.
YouTube's highest Bitrate quality uses VP9 video codec, verify codec with right-click on video, select "Stats for nerds".

Google Chrome: VP9 video codec is enabled on all OS.
Linux: VP9 is enabled in Firefox,
Mac: VP9 is disabled in Firefox, thus only H.264 with 1080p will get played.
Windows: VP9 with 2K or 4K depends on the machine

Enable VP9 in Firefox by setting media.mediasource.webm.enabled to true in about:config