Video/Audio Splicing
Last update：2025-05-22 15:09:36
Splicing allows you to merge various video and audio files into one unified content piece. This versatile operation can be performed in conjunction with other media processing functions to create custom media outputs.
How to Use
Structure your fops command as shown below:
<op>/<Format>
/mode/<value>
/concatorder/<value>
/moovToFront/<value>
/<encodeUrl1>/<encodeUrl2>...
|saveas/<Urlsafe_Base64_Encode(bucket:filekey)>
Parameters
| Parameter | Required | Description |
|---|---|---|
op |
Yes | Operation type. Use avconcat for splicing operations. |
format |
Yes | Target output format (mp3, mp4, m3u8, etc.) |
mode |
No | Splicing method: • 1 - For files with identical codecs (required for audio splicing)• 2 - For files with different codecs |
concatorder |
No | Sequence order for file concatenation, separated by hyphens Example: 2-1-4-3 would concat file 2, then 1, then 4, then 3 |
moovToFront |
No | MP4 metadata placement: • 0 (default) - Keep metadata at the end of file• 1 - Move metadata to beginning for faster streaming startup |
<encodeUrl1>/<encodeUrl2>... |
Yes | Files to be spliced, each encoded with URL-safe Base64 Example: Urlsafe_Base64_Encode(test_1.mp4)/Urlsafe_Base64_Encode(test_2.mp4)Important Notes: 1. All files must be from the same Object Storage bucket 2. Maximum of 5 files can be spliced at once |
saveas |
No | Output location as URL-safe Base64-encoded string: Urlsafe_Base64_Encode(bucket:savedfilename) |
Example
This example merges two videos, test_1.mp4 and test_2.mp4, from the vod-wcs-test001 bucket into a single output file named test_merge.mp4:
Pseudocode:
curl -v -X POST
–d "bucket=Urlsafe_Base64_Encode(vod-wcs-test001)&key=Urlsafe_Base64_Encode(test_1.mp4)&fops=Urlsafe_Base64_Encode(avconcat/mp4/mode/1/Urlsafe_Base64_Encode(test_1.mp4)/Urlsafe_Base64_Encode(test_2.mp4)|saveas/Urlsafe_Base64_Encode(vod-wcs-test001:test_merge.mp4))&force=1&separate=1"
–H "Authorization:AccessKey:EncodeSign"
--url "http://mgrDomain/fops"
Actual Request:
curl -v -X POST
-d "bucket=dm9kLXdjcy10ZXN0MDAx&key=dGVzdF8xLm1wNA==&fops=YXZjb25jYXQvbXA0L21vZGUvMS9kR1Z6ZEY4eUxtMXdOQT09fHNhdmVhcy9kbTlrTFhkamN5MTBaWE4wTURBeE9uUmxjM1JmYldWeVoyVXViWEEw&force=1&separate=1"
-H "Authorization:AccessKey:EncodeSign"
--url "http://mgrDomain/fops"
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