What the thread found

• The Teradek Cube is a camera-mounted HD video encoder weighing 6 ounces designed for wireless video monitoring rather than focus pulling or shot composition.
• Latency when receiving video on a laptop via VLC can be set as low as 100 milliseconds or as high as 2 seconds depending on quality preferences, with 300 milliseconds providing good quality balance.
• Receiving video on iPad or iPhone via HTTP Live Streaming protocol introduces approximately 10 seconds of delay due to buffering requirements.
• Compressed video transmission requires reducing bitrate from 200-350 megabits per second down to 2 megabits per second, which contributes to processing latency.
• Audio transported with video arrives concurrently with images when the camera captures audio as a secondary source.
• The device performs well with Arri Alexa cameras, which have high-quality monitor outputs.
• Uncompressed transmission systems from other manufacturers eliminate latency but are larger and heavier than the Cube.
• For wireless monitoring purposes with directors or cinematographers at a distance, a few frames of latency is acceptable, but audio-video synchronization becomes problematic during live dialogue recording when sound is also present on set.

Depends on

• The device is unsuitable for focus pulling due to latency.
• Audio and video go out of sync when monitoring with live dialogue, requiring either audio delay devices for headphones or shooting in situations where actors are out of earshot.
• High-end professional productions may prefer uncompressed transmission systems despite larger form factors.
• The delay can cause confusion for video assist when combined with live set audio, as shown by rejection of similar first-generation devices.
• One measurement indicated 5 frames of delay, conflicting with the stated 300-millisecond specification.
• Development of a lower-latency RTP app for iOS devices was promised but timeline was uncertain at the time of discussion.

Gear in this thread

Moduluscatalog

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