Tag Archives: avchat3

How to open AVChat 3 in a pop up in Joomla! 1.5

Published by mihai on | 2 Comments

Documentation, Integrations, Tips & Tricks

There are two ways to open the AVChat Video Chat Component in a pop up in Joomla!:

  1. Using Joomla!’s default method:
    • Log in the administrator area of Joomla!.
    • In the Menus area edit the link to AVChat 3.
    • Set the On Click, Open in option to  New Window without Browser Navigation (screenshot below)
    • Click Save.

    joomla_open_popup

    That’s it! Clicking the link in the menu will now open the video chat in a pop up. Using this method however you will not have control over the pop up dimensions

  2. A way that allows you to control the size of the pop up:
    • For this you’ll need to login to your website with an FTP client (FileZilla is our favourite) and go to /components/com_avchat3/
    • Open avchat3.php for editing.
    • Replace the object & embed html tags (everything from <object… to </object>) with this html code:
      <a href="javascript:void(0);" onclick="window.open('/components/com_avchat3/index.swf', 'AVChat', 'menubar=0, resizable =0, width=900, height=650');">Launch AVChat Video Chat</a>

    • Save the file and make sure you upload it back to the web server.

    You can change the size of the pop up by editing the width and height properties in the code above.

New support forum

Published by Octavian on | 1 Comment

Documentation

avchat-forum

We used to solve all AVChat issues by email, and it was wrong because all the info we’ve shared by email is now locked in those private email discussions, and believe me there’s a lot of useful info in those emails!

That’s why we’ve now launched a proper, public, forum : http://avchat.net/forum/,  to make all that „problem solving info” available to everyone! The entire AVChat team will be answering questions in there so expect proper deep technical documented answers.

There are special areas for all our products including AVChat, the HD  video recorder and the audio recorder.

The private and personal support by email is still available to our customers, the forum is just an addition!

How to close the pop-up containing AVChat 3 by clicking the [LeaveChat] button

Published by Octavian on | 2 Comments

Documentation, Tips & Tricks

When AVChat 3 is opened in a pop up window you can use the [Leave Chat] button to close the pop up window:

  1. edit avc_settings.php or avc_settings.asp
  2. set $avconfig[‘disconnectButtonEnabled’]=1;
  3. set $avconfig[‘disconnectButtonLink’] = ‘javascript:window.close();‘;

By default clicking [Leave Chat] takes you to a new web page instead of closing the window!

leave_button_screenshot

Troubleshooting video quality issues

Published by Octavian on | No Comments

Documentation, Tips & Tricks

On the publisher side:

Problem: low frame rate

Solution(s):

  1. Increase the light in the room, natural light works best.
  2. Get a better web cam, good web cams capture a lot of frames with little light in the room.
  3. Lower the picture resolution requested by AVChat 3, some web cams just can’t capture 30fps at 400×300.
  4. Increase the movement in the shot, if there’s no movement Flash Player will not capture many frames/second because there’s no movement.

Problem: video stream does not use entire allocated bandwidth

Solution(s):

  1. Increase the light in the room, natural light works best. More light helps the web cam capture more details!
  2. Get a better web cam, good web cams capture a lot of detail with little light in the room. DV cams for example capture huge ammounts of data compared to normal web cams.
  3. Check your connection to the media server. When you’re publishing video you’re  uploading data to the media server. Even tough you might have a 20Mbits/s Internet connection, that’s most probably your download rate, your actual upload rate could be much less. If you’ve configured the video chat to use as much as 768kbits/s per stream, this ammount of video data will not fit in real time trough your 350kbits/s upload pipe!

Problem: dark image or noisy image

Solution(s):

  1. Increase the light in the room, natural light works best.
  2. Get a better webcam.

Problem: no image at all or blank image

Solution(s):

  1. Make sure your web cam is not already used by another app
  2. Make sure the proper web cam is used by Flash Player (Right click -> Settings -> Web Cam tab -> Select the web cam you want to use from the drop down list)

Better audio quality will be available in the May build

Published by Octavian on | 2 Comments

Uncategorized

The May Build of AVChat 3 (due next week) will have support for the Speex audio codec introduced in Flash Player 10. This will mean better audio quality,lower latency and less bandwidth usage than before!

This is one of the reasons we’ve switched to Flash Player 10 for AVChat 3 starting with the April Build, other changes will include separate volume control for each web cam and proper behaviour when the users denies access to his web cam and mic.

The old codec we’ve been using so far in AVChat 3, the NellyMoser Asao codec, was introduced in Flash Player 6 and was licensed by Adobe from NellyMoser Inc. . Because NellyMoser Inc. had the full rights to the audio codec this made it hard and expensive for developers to convert files encoded with NellyMoser to AAC or MP3. This was one of the main complains against NellyMoser Asao.

The Speex codec, introduced in FP10, is optimized for voice and provides better audio quality using less bandwdith. It is also open souce so you can decode it and convert it to mp3 or aac (ffmpeg already decodes Speex) without needing any licenses. It also provides more levels (11) of quality as opposed to NellyMoserAsao (only 5).

In this table comparing compression rates for Nelly Moser Asao and Speex in Flash Player you can see that Speex at its highest setting needs half the bandwidth NellyMoser Asao uses at its highest setting:

Speex Nelly Moser Asao
Quality
(encodeQuality)
Required bandwidth
in Kbps
Quality
(rate)
Required bandwidth
in Kbps
0 3.95 5 11.025
1 5.75 8 16
2 7.75 11 22.05
3 9.80 22 44.1
4 12.8 44 88.2 (default in AVChat 3
so far)
5 16.8
6 20.6 (default in AVChat 3
from now on)
7 23.8
8 27.8
9 34.2
10 42.2

We will update our article covering changing the audio quality in AVChat 3 in time for the release next week, however, no changes will be needed as the new build will default to using the new Speex codec for audio. Until next week you can test the new audio quality in our online demo of AVChat 3.