QVPro Codec Application Software
Changes
qvpro-app-137.pkg
qvpro-kernel-137.pkg
qvpro-rootfs-137.pkg
Application Update Instructions (Models: QVSD, QVPro ONLY)
NOTE: Unless instructed by a QVidium representative, we recommend that you ONLY upgrade the qvpro-app-XXX.pkg.
(The kernel and rootfs upgrades are primarily used for downgrading back from the new beta software.)
WARNING: DO NOT use to update QVSDI, QVMP2C or QVAVC codecs!
Please follow these steps below to update your QVPro series codec:
- Stop all video streams (stop encoder, decoder and transcoder if running)
- Reboot the QVPro Codec
- Download and save the file qvpro-app-XX.pkg to your computer (XX is the version number)
- Go to the QVPro codec using your web browser and click on System/Update
- Browse to the file you downloaded and click Update
After waiting up to about 30 seconds for the file to download, the screen should say Updating and your update should begin.
- After the screen says Update finished, Power Cyle your codec (unplug and replug power cord) to reset your codec.
PC Application Software
QVidiumCodecManager-7.msi
Hints for Minimizing Bitrates
Audio Notes
To minimize wasted audio ovehead and minimize audio bitrates, you should set one of the following:
- Set the Audio Bitrate to 56 Kbps and the Sample Rate to 48 KHz. Encoding MUST be AAC (results in 63 Kbps); or
- Set the Audio Bitrate to 64 Kbps and the Sample Rate to 32 KHz. Any audio encoding (results in 84 Kbps)
At low bitrates, we have found that MPEG1/Layer2 Audio Encoding sounds best.
(Note: setting MPEG1/Layer2 to 56 Kbps results in a total of 126 Kbps audio overhead.)
Low-Bitrate Encoder Settings
On the Encoder menu:
- Click on "Default" to reset the Encoder Profile.
- Then set the following:
|
On basic tab: |
On Advanced tab: |
|
Video Bit Rate: 200000 |
Low Delay: Yes |
|
Video Encoding: H264 |
Video Filtering: On |
|
Audio Bit Rate: 64000 |
Video Frame Rate: Half |
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Audio Encoding: MPEG1/Layer2 |
Video Resolution: CIF |
|
Audio Sampling Rate: 32000 |