2012منتدى Video Assist and Video Accessories
أجهزة إرسال لاسلكية من طراز HDMI للفيديو المهني والتطبيقات الاستهلاكية
مضى على هذا 14 سنة. قد تكون المعدات والأسعار قد تغيّرت منذ ذلك الحين.
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- وتأخّرت أجهزة الإرسال اللاسلكية القديمة من طراز HDMI نحو 500 مللي ثانية، في حين أن النماذج الجديدة تحقق عادة 1-5 مللي ثانية من الرطوبة.
- والكثير من النظم اللاسلكية التي لا تملكها شركة HDMI ذات النطاق المحدود، وعادة ما تكون 30 قدماً أو أقل، على الرغم من أن بعض النماذج المهنية تدّعي 100-300 قدماً بمسار واضح.
- Canon 5D Mark II cameras experience approximately 13 seconds of signal re-handshaking delay when the record button is pressed, causing the HDMI output to drop from 1080p to 480p resolution.
- Canon 7D cameras maintain consistent resolution when recording begins, making them compatible with wireless HDMI systems without the reconnection delay seen on 5D models.
- Most consumer wireless HDMI devices operate on 5V power via USB, while professional solutions may require AC power or D-Tap connectors.
- Wireless HDMI systems operating in the 5.1-5.9 GHz frequency band commonly suffer from reduced range and reliability when located near lighting equipment or in RF-heavy environments.
- Lilliput external monitors exhibit slow menu response times, limited aspect ratio options, and incompatibility with many camera formats.
- External monitors and wireless transmitters can generate RF interference that degrades receiver sensitivity and effective transmission range.
- Uncompressed wireless HDMI solutions require converters like the Decimator 2 or AJA units to translate between HDMI and HD-SDI formats, adding significant cost.
- Reconnection time after signal loss is a critical issue for some wireless systems, with delays up to 7 seconds or more at distance before stable video returns.
يعتمد على
- Information from 2012, technology has advanced significantly since then.
- Testing was performed in limited conditions and may not represent all real-world scenarios.
- Claims about range and performance vary by model and testing environment.
- Many product links and availability information are outdated.
- Reconnection times and interference issues are reported anecdotally without systematic comparison.
- Professional wireless HDMI solutions discussed are high-cost and require additional format conversion equipment for HD-SDI workflows.