Video Transcoding enables the conversion of your videos, which are stored on Object Storage, from their original format to a variety of bitrates, resolutions, and codecs. This process ensures compatibility across multiple devices, guaranteeing the most optimal viewer experience.
At CDNetworks, we accommodate a wide range of video and audio formats and codecs, including the following:

• Video formats: MP4, FLV, HLS, DASH, TS, MKV, MOV, WMV, AVI, VP8, VP9, RealVideo, Windows Media Video, etc.
• Audio formats: AAC, AC-3, MP1, MP2, MP3, PCM, RealAudio, Windows Media Audio (WMA), OGG, etc.
• Codecs: H.266, H.265, H.264, H.263, MPEG, etc.

Transcoding can be executed while uploading the video to Object Storage, on existing videos within Object Storage, or simultaneously with other media processing operations.

How to Use

Structure your fops in the request body as follows:

<op>/<Format>
    /r/<value>
    /ab/<value>
    /vb/<value>
    /vcodec/<value>
    /acodec/<value>
    /s/<value>
    /autoscale/<value>
    /autofill/<value>
    /GOPInterval/<value>
    /rotate/<value>
    /an/<value>
    /vn/<value>
    /moovToFront/<value>
    /sar/<value>
    /preset/<value>
|saveas/<Urlsafe_Base64_Encode(bucket:savedfilename)>

Video Transcoding Fops Parameters

HLS Presets

Request Example

Example Request 1: Converting an MP4 Video to FLV

The following example demonstrates how to transcode a video named test.mp4 from the vod-wcs-test001 bucket into an FLV format with a bitrate of 128K. The resulting video will be named test_file.flv and will be saved in the same vod-wcs-test001 bucket.
Pseudocode format for the request:

curl -v -X POST 
–d "bucket=Urlsafe_Base64_Encode(vod-wcs-test001)&key=Urlsafe_Base64_Encode(test.mp4)&fops=Urlsafe_Base64_Encode(avthumb/flv/vb/128k|saveas/Urlsafe_Base64_Encode(vod-wcs-test001:test_file.flv))&force=1&separate=1" 
–H "Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"

Actual request format:

curl -v -X POST 
-d "bucket=dm9kLXdjcy10ZXN0MDAx&key=dGVzdC5tcDQ=&fops=YXZ0aHVtYi9mbHYvdmIvMTI4a3xzYXZlYXMvZG05a0xYZGpjeTEwWlhOME1EQXhPblJsYzNSZlptbHNaUzVtYkhZPQ==&force=1&separate=1" 
-H "Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"

Example Request 2: Converting an MP4 Video to HLS

This example shows how to transcode a test.mp4 video from the vod-wcs-test001 bucket into HLS format. The output video will have a bitrate of 150K, an aspect ratio of 16:9, and a resolution of 400x224. The HLS manifest file will be named test.m3u8 and saved in the same vod-wcs-test001 bucket.
Pseudocode format for the request:

curl -v -X POST 
–d "bucket=Urlsafe_Base64_Encode(vod-wcs-test001)&key=Urlsafe_Base64_Encode(test.mp4)&fops=Urlsafe_Base64_Encode(avthumb/m3u8/preset/video_16x9_150k|saveas/Urlsafe_Base64_Encode(vod-wcs-test001:test.m3u8))&force=1&separate=1" 
–H "Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"

Actual request format:

curl -v -X POST 
-d "bucket=dm9kLXdjcy10ZXN0MDAx&key=dGVzdC5tcDQ=&fops=YXZ0aHVtYi9tM3U4L3ByZXNldC92aWRlb18xNng5XzE1MGt8c2F2ZWFzL2RtOWtMWGRqY3kxMFpYTjBNREF4T25SbGMzUXViVE4xT0E9PQ==&force=1&separate=1" 
-H "Authorization:Authorization:AccessKey:EncodeSign" 
--url "http://mgrDomain/fops"