Epiphan Pearl Mini Live Video Production System with 512GB SSD (NA/JP) - Manual (Page 448)

l Configuring very low frame rates such as 1 fps encoding with a high bitrate setting (e.g. 7000 kbps) results in poor
video quality.
Workaround: Allow Pearl Mini to automatically select the best bitrate setting. For 1 fps, this results in a bitrate of
about 1180 kbps.
l Some audio distortion is heard on the video output port when the channel encoding is set to1 fps.
Workaround: For best results, encode the channel at 5 fps or higher.
l Occasionally, a solid black image appears when connecting an AV.io HD capture card to a USB port on Pearl-2.
Workaround: Reconnecting the capture card resolves the issue and captures the video normally.
l The GoPro camera model HERO7 and some Evertz video distribution systems can suddenly stop working with
Pearl Mini.
Workaround: Reset the EDID for the Pearl Mini input. You can also use a device such as an HDMI splitter to
isolate and filter the video signal before the signal is sent to Pearl Mini.
Affecting streaming and recording
l Interlaced SDI capture is sometimes shifted downwards, resulting in a small green line at the top of the video.
Workaround: This issue varies with different sources. If it is affecting your capture, the best solution is to crop out
the green line in your layout.
l AFU to Amazon Web Services S3 Simple Cloud Storage transfer sometimes does not recover after the network
connection is cut. The expected behavior is that the file transfer would restart, but there is sometimes a time
desync that results in a failed transfer.
Workaround: If the network connection is severed during a AFU transfer, the process must be restarted from the
beginning, and the transfer must proceed without interruptions to the network.
l In the current FTP session, the FTP Delete command continues to work even after the Disable FTP Delete
setting is applied using the Admin panel.
l Occasionally, tracks won't extract from a 64 GB .AVI multi-track recording using the Admin UI.
Workaround: Perform the extraction again.
Affecting the Admin panel
l It is possible to name two or more channels with the same value. Use of automatic file transfer and UPnP is
unpredictable if this occurs.
Workaround: Ensure each channel has a unique name.
l Cropping a video source to 16:9 using the layout editor may not scale correctly and can appear as a thin line in the
layout editor. This happens when the device or web browser you're using with the admin interface has a different
approach to composing layout. Recording and streaming are not affected.
Workaround: Due to color space limitations (YUV with 2x2 subsampling), the cropped region's dimensions must
be set to even values.
l The special preview mode that lets you preview all channels at once using a web browser isn't functioning.
Workaround: Preview individual channels using different tabs in your web browser.
Affecting Epiphan Live
l Very fast, repeated switching between layouts using the Switcher interface can sometimes cause the monitoring
panels and the preview in the Admin Panel to display an blank screen until the video image finishes loading.
Workaround: Avoid repeated fast switching between layouts.
l The green and red borders around the "Preview" and "Live" areas in the Channel section are offset from the video
by a few pixels.
Workaround: The offset is cosmetic and does not affect your Live stream, so no workaround is required.