Autor: Redaktion

Recording Device Blackmagic Video Assist

The Blackmagic Video Assist is a touchscreen-controlled field recording device.

There are two models available – a 5-inch screen model, which offers Full HD picture monitoring and HD recording, and a 7-Inch Video Assist 4K model, which features a 7-Inch touchscreen monitor and records UHD upto 2160p30.

There are three mounting points for ¼ inch threads on the top and bottom, so that the unit can be rigged flexibly. The device reproduces a very high quality image, but the display may benefit from the use of a hood or sun visor when filming outdoors in bright conditions. 

The recorder offers the ability to extend the life of older cameras by allowing users to record in more modern recording formats, not available on the cameras, as well as offering professional image control tools. The 5-inch display with its 1920x1080 pixels improves visibility beyond the standard viewfinder of digital SLR cameras. The integrated recorder can be accessed via HDMI or SDI, making it compatible with virtually any video camera or digital SLR. The 7-inch display has a 1920 x 1200 pixel screen.

An optional signal loop-through allows the mirroring of the image onto larger HD monitors. The integrated 6G-SDI allows monitoring of UHD signals. 

A start / stop trigger function via HDMI is possible from firmware version 1.1.

The Video Assist records on standard SDHC or SDXC cards. However, these need to be able to record at very high speeds in order to avoid dropped frames during the recording process.

Recordings are stored as Apple ProRes , with a colour sub-sampling rate of 4:2:2, encoded in 10 bits, with firmware version 1.2 in DNxHD . This makes the movement of rushes to the post production suite easier as the rushes don’t require transcoding. The recording formats include compatibility with DaVinci Resolve, Final Cut Pro X, Adobe Premiere Pro and Avid Media Composer .

The Video Assist lacks a pull-down function. If you use the recorder with a camera that offers a true progressive signal via HDMI, for example with a Panasonic GH4 or a Canon DSLR , this is not a problem. Cameras that deliver an interlaced signal, even though they are set to a progressive output, will require the pull-down operation to be carried out in the editing system via an additional workflow.

The features of these devices are regularly updated via new firmware releases.

Blackmagic Video Assist Summary

  • SD-Resolution: 625/50i PAL, 525/59.94i NTSC
  • HD-Resolution:
    1280x720p: 50, 59.94, 60
    1920x1080p: 23.98, 24, 25, 29.97, 30, 50, 59.94, 60
    1920x1080psF: 23.98, 24, 25, 29.97, 30
    1920x1080i: 50, 59.94, 60
  • Video: 4:2:2, 10 Bit (Rec.601 in SD, Rec.709 in HD)
  • Codec: ProRes 422/HQ/LT/Proxy, DNxHD
  • Audio: 2 channels, 48 kHz, 24 Bit
  • Interfaces: 2x HDMI In/Out, 2x 6G-SDI In/Out (miniBNC), USB type B (for firmware updates etc.), headphone jack, analog out, DC In
  • Recording Media: SDXC/-HC UHS1 cards, supported SD cards: DS, HS, SDR12, SDR25, SDR50 & SDR104

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