Indicates the expected recording time remaining on the inserted media at the current settings. Changing your recording settings may extend or decrease your available recording times.
Whilst enabled, the input is constantly being recorded, with approximately the last 8 seconds in HD and 2-3 seconds in 4K being cached into memory. The frame rate and codec selected will determine the number of seconds being cached for Pre-Roll. Using a lower bit rate codec setting and shooting at a lower frame rate will increase the length of Pre-Roll.
When the record button is pressed or trigger is sent, the buffered Pre-Roll data in memory will be written out to the start of the recording. This means if you are a few seconds slow hitting the record button when something interesting happens you will still capture the shot.
With this option turned on you will see a red Pre-Roll icon flash in the top left hand corner of the display.
A white circular arrow will also appear around the record button.
With Pre-Roll mode activated the Recorder is constantly caching frames internally to the unit and as such any feature that can not be changed whilst recording is disabled. This includes audio channel select, 3D LUT record, codec, disk options etc.
CODEC (Recording Format)
To select a codec tap on the currently displayed codec to toggle between the options:
Apple ProRes RAW,
Avid DNxHD® and
After selecting a codec, you will be prompted to tap Confirm to switch to that codec.
If you select an optional codec like Avid DNx, ProRes RAW or H.265, you will be prompted to activate the codec at my.atomos.com as these codecs must be activated before use.
Tapping on this setting allows you to toggle the compression for the currently selected codec.
Apple ProRes is built in to the NINJA V and offers three levels of compression (HQ, 422 & LT).
Avid DNx requires free activation via my.atomos.com and includes DNxHD with four levels of compression (220x, 220, 145, 36) and DNxHR for 4K/UHD inputs with four levels of compression (HQX, HQ, SQ and LB). DNxHD 220x/DNxHR HQX are 10-bit, whilst all others variants are 8-bit and DNxHD36 is a proxy codec.
Apple ProRes RAW
Apple ProRes RAW also requires free activation via my.atomos.com and includes two compression options: ProRes RAW and ProRes RAW HQ. Compression artifacts are very unlikely with ProRes RAW, and extremely unlikely with ProRes RAW HQ.
H.265 (HEVC) is an optional codec that requires
Displays the resolution and frame rate that is being recorded to your media.
Record Bit Depth
When the H.265 codec is selected, an additional Record Bit Depth setting will be available on the Record page. Tap to cycle through the options which include 8-bit 4:2:0, 8-bit 4:2:2 and 10-bit 4:2:2.