LBHD
Last update：2025-03-21 15:07:49
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.
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"
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