3.2 Channels
- Thomas Staiger
- Christian Schabasser
| Channels tab: select the available channels that you would like to configure and choose the appropriate settings for the channel. The available video modes for the previously selected framerate will be displayed automatically. Click on the appropriate checkbox to automatically activate the channel with the selected parameters. On the left side you will see all the video capture devices found by the engine, as well as the chosen names for these devices. Please select a device to configure it. |
1 | Capture Devices List: Lists all video capture devices discovered by the engine. |
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2 | Name: Enter the desired channel name. |
3 | Device: Displays the device model. |
4 | Video Mode: Configure the video mode. The available video modes for the previously selected engine framerate will be displayed accordingly. |
5 | Video Input: Select your video input. |
6 | Audio Input: Select your audio input. |
7 | Audio Bitrate: Select your audio bitrate (native 24-bit bitrate for AJA, selectable 16- or 24-bit for Blackmagic Design and Deltacast cards). |
8 | VTR Control: Select the serial RS-422 connection you want to use to control your VTR. |
9 | VTR Preroll in Seconds: Set the desired VTR preroll value in seconds (1-10). |
10 | Chunk Length: The Chunk Length defines the maximum length of the container. If the recording does not reach the entered Chunk Length, the clips will be automatically truncated into the expected recorded length. If the recording exceeds the entered Chunk Length a new recording, generating a new clip, will automatically be started. When recording in crash mode, clips will be added after the maximum record length has been reached. It is not required to enable this feature separately as it is enabled by default. The maximun chunk length is 12 hours. |
11 | Start Timecode: By selecting this option and entering the appropriate timecode value, every new clip will start / record with the defined timecode value. |
12 | Cache Options: Normally files are written to disk in a stream (no caching, default). You can ask the HDD-Controller to cache data in order to flush them later to disk to improve write performance. Change this value to “Cache”, if you experience low write performance, otherwise keep the default “Don’t Cache” setting. |
13 | Video Output Buffer (QuickTime only): Number of A/V frames to flush to the storage system at once. If you want to flush once a second, just enter your video framerate. |
14 | Output Buffer Segments: Number of buffer segments. The number of segments multiplied by the storage flush size is the total buffer size. Be careful when using that feature, as you could easily run out of RAM. It is recommended not to exceed a total buffer size of 250 frames. |
15 | Audio Preview Port: enter a port number of choice to enable the audio preview in the Just In Multi GUI for that particular channel. |
16 | Engine Port: when using “Publish Bonjour service” it defaults to “0” since the Bonjour discovery mode will deliver the available information to the Just In Multi GUI. Please enter a dedicated port number, if you want to access a channel from Just In Multi over an IP connection (see also pages 15-16 of this manual for further explanations). Consult your network administrator for port availability for the IP settings. |
17 | Publish Bonjour service is checked by default to ease up network discovery (port number “0”). If you plan to rather use direct IP addressing, then please consult your network administrator on port availability. |
18 | Local Mode: Starts up a hidden engine and automatically connects to it. No network functionality. |
Xsan Support
Version 1.8 of just:in multi highly improves the writing frequency/load behavior on Xsan and other similar storage systems. This is done by specifying the frames per flush and storage buffer size. The frames per flush value defines after how many frames the chunk will be written to disk, the storage buffer size defines how many chunks are possible. The total size of the buffer is calculated by multiplying these two values (see Video Output Buffer and Output Buffer Segments settings on page 8).
Important note on codecs availability and deployment on OS X
- Due to licensing restrictions, we’re not allowed to ship any Apple codecs along with our products. In order to obtain the appropriate professional Apple codecs (ProRes, IMX, HDV etc.) you need to have an already installed version of either Apple Final Cut Studio 3, Apple Final Cut Pro X, Apple Compressor or Apple Motion on the machine used for either ingest or playout.
- The Apple Pro Codecs are available through a software update once an installation of either Apple Final Cut Pro X, Apple Motion or Apple Compressor is discovered as well as a dedicated update installer via the following URL: http://support.apple.com/kb/DL1396. Please check regularly for new updates on Apple’s support site or via the Software Update/App Store mechanism built into OS X.
- The same applies to other 3rd party codecs like AVC-Intra codecs needed to record AVC-Intra clips. Please contact ToolsOnAir or your preferred ToolsOnAir reseller for informatiom about AVC-Intra codec compatibility within just:in multi.
- If you plan to either record or playout DNxHD encoded files you need to install the Avid for QuickTime codecs. As of this writing the current Avid QuickTime codecs can be downloaded here.