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Download and Transcoding

What container formats and audio/video codecs do we support for transcoding?

We support the following video input formats:
Container Format
Video Codec
Audio Codec
MP4
H.264 and H.265
AAC
FLV
H.264 and H.265
AAC
MOV
H.264, H.265, and MPEG4
AAC
WMV
WMV1 and WMV2
WMA1 and WMA2
MKV
H264, VP8, and MPEG4
AAC
AVI
H264, WMV1, WMV2, and MPEG4
AAC, WMA1, and WMA2
RMVB
RV series
RAAC and RACP
TS
H.264, MP1V, and MP4V
MP1, MP2, MP3, and MP4A
MPG
MPEG1 and MPEG2
MP2
3GP
H263 and MPEG4
AMR and AAC
We support the following video output formats:
Container Format
Video Codec
Audio Codec
MP4
H.264 and H.265
AAC
HLS
H.264 and H.265
AAC
TS
H.264 and H.265
AAC
FLV
H.264 and H.265
AAC
DASH
H.264 and H.265
AAC
We support the following audio input formats:
Container Format
Audio Codec
SILK
SILK
AMR
AMR
We support the following audio output formats:
Container Format
Audio Codec
M4A
AAC
MP3
LAME

Why wasn’t transcoding initiated?

Possible reasons and troubleshooting methods include:
Upload failed: File upload through a Tencent Cloud COS SDK or in the COS Console failed, and an HTTP error code was returned (e.g., 4XX or 5XX). In this case, no COS event notification will be triggered, and MPS will not initiate a transcoding task. Please check whether the file is successfully uploaded.
Upload succeeded but did not trigger transcoding: Possible reasons include: No workflow was set up, or the workflow was not set up correctly. Please check and make sure that the workflow is set up properly.

Why did the transcoding initiation fail?

Possible reasons and troubleshooting methods include:
Incorrect request parameters: If the API returns an error, please check the API parameters and make sure that the API call is successful.
No authorization: If the API returns a permission-related error, please check whether you have granted MPS permissions to COS and CMQ resources.

Why did transcoding fail?

Transcoding failure refers to a failure that occurs during any subtask. This includes transcoding, screencapturing, watermarking, content recognition and content analysis. You can determine the error type based on the returned error code and message, as shown below:
Incorrect source file metadata or unsupported format.
Failed screencapturing (due to lack of video stream), unknown errors, etc.
If the error is relevant to the source file, please check the file metadata and encoding parameters. For other error types, please submit a ticket.