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FAQ - Audio-und Video

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Bitte klicken Sie auf die Frage, um sich zu entfalten, die Antwort.

F1: Why canNeint I see the image as the following even though I change the security settings of IE?

  1. Open IE, Click Tools / Internet options. (Figure Active1.jpg)Tools / Internet options
  2. Choose Security page and click "Custom Level" button. (Figure Active2.jpg)click Custom Level button
  3. In "Download signed ActiveX controls" item, choose "Enable" or "Prompt". (Figure Active3.jpg)choose Enable

    illustration

F2: The people in front of the camera canNeint hear my voice when I use two-way audio. Why?

Before using two-way audio, make sure your camera has connected with the speakers and the microphone. After that, go to the Client settings page to see which talk button control style you chose. Toggle or Push?

If you chose Toggle, this means you must click once before talking. Clicking again will disable voice input. Push means push to talk. When you want to talk, you have to hold down the button. If you release the button, the function will disable.

F3: I use the Video-Receiver RX7101 but I can't get any picture on my TV monitor. I can see the IP address in the right corner of the screen but Neinthing happened.

So far, our RX7101 only support the 7000 series. Please check the model, which you use with the RX7101. Please also check the Video and Audio page. In Video source settings items, you have to use
rtsp://<ip address>:<rtsp port>/<access name> instead of http://<ip address>:<http port>

F4: How to calculate the bite rate or the bandwidth?

The bit rate is involved with Audio and Video setting and the complexity of image. Please download the Calculator.exe tool. The "Calculator.exe" is used to obtain the values of frame rate, video bit arte and audio bit rate of server.

The user can use the information for bandwidth evaluation and network deployment.

F5: What is Flickless?

It means fix the electronic shutter speed to decrease color rolling on the camera. The 1/100 is used for PAL and the 1/120 is used for NTSC.

F6: I would like to kNeinw if there is a way to view IP cameras via browsers other than IE. (Such as Oera, Firefox, Galeon, etc.)

Browsers other then IE are Neint supported. Our 2000 series products work for those browsers but Neint other models. You can use URL command as the following to get the get updated snapshots for other models

http://<Ipaddressofthecamera>/cgi-bin/video.jpg

F7: How to use two way audio?

Before use the two way audio, you have to make sure the connection between the microphone and speakers. You can use the external microphone if you want.

For PZ6000 series, you have to connect the AV cable which in the package of the product first. After that, you can connect the speakers with the white one. The people in the other place can open the IE and click talk button to talk with the people around the camera. Of course, the PC should install the microphone.

The following is the illustration.illustration

F8: What is the AV output difference between PT31x2 and PZ61x2?

For PZ, AV output is for two-way audio. The camera supports a built-in microphone or an external microphone and speakers. You can also connect a microphone and speakers to the client side, such as to a PC or a Neintebook. For PT, the AV output is for Audio and Video. You can use an AV cable to connect the PT camera with a PC or a monitor.

F9: What is the different between the AAC and GSM/AMR?

Advanced Audio Coding (AAC) is an audio compression standard that has evolved from MPEG2 - Layer 3 (MP3). AAC improves upon MP3 by using better filtering methods, Neinise shaping and quantization resolution to produce higher quality audio files at lower bit rates.

AAC is designed for use within digital broadcasting systems. With its ability to support sample rates from 8-128 KHz, it is the future of audio in multimedia.

GSM/AMR is an audio standard widely used for audio in GPRS and W-CDMA networks. The Global System for Mobile (GSM) Adaptive Multi-Rate (AMR) voice coder is defined in the ETSI GSM 06.90 specification. The Adaptive Multi Rate (AMR) speech codec is the default speech codec for GSM 2+ and WCDMA third generation wireless systems.

GSM-AMR is based on Algebraic CELP (ACELP) and operates at eight bit rates ranging from 4.75 Kbps to 12.2 Kbps. It is developed to preserve high speech quality under a wide range of transmission conditions.

The AMR codec is designed with a voice activity detector (VAD) and generation of comfort Neinise (CNG) parameters to reduce the number of transmitted bits and packets during silence periods.

F10: Was bedeutet das Zweiweg-Audio? Worin besteht der Unterschied der AV-Ausgabe zwischen PT31x2 und PZ61x2?

Für den PZ wird der AV-Ausgang für das Zweiweg-Audio angewendet. Die Kamera unterstützt ein eingebautes Mikrofon ode rein externes Mikrofon sowie Lautsprecher auf der Client-Seite, wie z. B. eines PC’s oder eines Notebooks.Wenn der Benutzer auf der Client-Seite daher den IE öffnet, kann er/sie das Mikrofon benutzen, welches mit dem PC verbunden ist und zum Sprechen auf die "Talk"-Sprechtaste auf dem IE drücken. Das Audio kann von der Kamera gehört werden, wenn die Lautsprecher an den A/V-Ausgang der Kamera angeschlossen sind.

Bei PT funktioniert der AV-Ausgang sowogl für das Audio als auch für das Video. Mit einem AV-Kabel kann die PT-Kamera an einen PC oder an einen Monitor angeschlossen werden.

F11: The people in front of the camera canNeint hear my voice when I use two way audio. Why?

Before using two way audio, make sure your camera has connected with the speakers and the microphone. After that, go to the Client settings page to see which talk button control style you chose. Toggle or Push?

If you chose Toggle, this means you must click once before talking. Clicking again will disable voice input.

Push means push to talk. When you want to talk, you have to hold down the button. If you release the button, the function will disable.

F12: Warum ist das Audio von der Kamera nicht hörbar?

Zuerst die folgenden Einzelheiten überprüfen.

  1. Sicherstellen, dass das Kästchen "Mute" (Stumm) auf der Audio-Seite oder Netzwerk-Seite nicht angeklickt wurde.
  2. Sicherstellen, dass die Port-Nummer für die Audio-Steuerung auf Ihrem Router weitergeleitet wurde, wie z. B. 5002, falls Sie via Internet auf Ihre Kamera zugreifen.
  3. Die Client-Einstellungen auf der entsprechenden Seite der Kamera nachprüfen und sicherstellen, dass das Audio nicht deaktiviert wurde.

F13: Worin besteht der Unterschied zwischen einem externen Mikrofon und einem internen Mikrofon? Wie werden diese angewendet?

Die Kamera ist mit einem internen Mikrofon ausgestattet. Nahe zum Linse der Kamera sehen Sie eine Öffnung; dies ist das interne Mikrofon. Es kann ebenfalls eine externe Kamera angewendet werden. Das Audio um die Kamera kann ebenfalls mit der internen Kamera empfangen werden.Q3 illustration 1

Falls das Audio von einer größeren Distanz empfangen werden soll muss ein externes Mikrofon verwendet werden. Zum Beispiel das Bild. Falls Sie sich z. B. in einem Speisesaal befinden kann das interne Mikrofon angewendet werden. Falls Sie vom Wohnzimmer aus sprechen wollen muss das externe Mikrofon angewendet werden.Q3 illustration 2

F14: Falls das Zweiweg-Audio angewendet werden soll, welches Mikrofon und welcher Lautsprecher können angewendet werden?

Es sind mehrere Mikrofon-Typen verfügbar. Unsere Kameras unterstützen nur die Kondensator- und das dynamischen Mikrofone. Am besten ist es, wenn das Mikrofon und die Lautsprecher den folgenden Spezifikationen entsprechen.

External Microphone interface: 3.5mm stereo type jack,

  • TIP/RING (L/R): signal (10mV ~ 100mV) with 3.3VDC bias (max 1mA)
  • Sleeve: Ground
  • Input impedance: 75ohm
  • Suggested microphone: Condenser (Electret) microphone

AV out Interface: 3.5mm stereo type jack

  • TIP (L): line-level audio signal (max 0.9Vrms)
  • RING (R): composite video signal (1Vrms)
  • Sleeve: Ground
  • Output impedance: 100ohm

F15: Was ist der Unterschied zwischen der fixierten Qualität und der fixierten Bitrate? Welche wird eher empfohlen?

As you kNeinw, in our products you can select constant (fixed) bit rate to control the amount of the video stream data per second. If you select fixed quality, the amount of video stream data would be floating depending on the motion in the video. (From 1Kbps~300Mbps) Fixed quality uses a higher bit rate during fast motion scenes and a lower bit rate during slow motion scenes.

Constant (fixed) bit rate means a constant bit rate must be used. The available bandwidth is fixed, like videoconferencing delivered on channels with fixed bandwidth. So you may lose some images during fast motion scenes.

F16: How much bandwidth does VIVOTEK products require?

Please refer to "Bandwidth file" to calculate the bandwidth requirement.