Low Bandwidth High Definition

Last update:2025-05-22 11:21:23

Low Bandwidth High Definition (LBHD) is a cutting-edge transcoding technology offered by CDNetworks that dramatically reduces video bitrates while maintaining exceptional image quality. This proprietary solution leverages advanced technologies including:

  • Scene Recognition
  • Lossless Bitrate Reduction
  • Image Quality Rebuild

The result is significantly smaller video files that preserve visual fidelity, enabling high-quality streaming experiences even in bandwidth-constrained environments.

View Demo Video

Comparison of Original vs LBHD Transcoded

LBHD Performance Metrics

How to Use

Structure your fops command in the request body as follows:

<op>/<Format>
    /nbhd/<value>
|saveas/<Urlsafe_Base64_Encode(bucket:savedfilename)>

Parameters

Parameter Required Description
op Yes Operation type. For LBHD transcoding, use avthumb.
format Yes Target format for output (mp4, flv, m3u8, mpd, etc.)
nbhd No LBHD enablement flag:
0 (Default) - LBHD processing disabled
1 - LBHD processing enabled
saveas No Output location as URL-safe Base64-encoded string: Urlsafe_Base64_Encode(bucket:savedfilename)

Example

This example transcodes a video named test.flv into an LBHD-optimized MP4 file named test.mp4 in the same bucket:

Pseudocode:

curl -v -X POST 
–d "bucket=Urlsafe_Base64_Encode(vod-wcs-test001)&key=Urlsafe_Base64_Encode(test.flv)&fops=Urlsafe_Base64_Encode(avthumb/mp4/nbhd/1|saveas/Urlsafe_Base64_Encode(vod-wcs-test001:test.mp4))&force=1&separate=1"
–H "Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"

Actual Request:

curl -v -X POST 
-d "bucket=dm9kLXdjcy10ZXN0MDAx&key=dGVzdC5mbHY=&fops=YXZ0aHVtYi9tcDQvbmJoZC8xfHNhdmVhcy9kbTlrTFhkamN5MTBaWE4wTURBeE9uUmxjM1F1YlhBMA==&force=1&separate=1"
-H "Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"
Is the content of this document helpful to you?
Yes
I have suggestion
Submitted successfully! Thank you very much for your feedback, we will continue to strive to do better!