Can I merge subtitles with MP4 in AWS transcribe?

Question

I created a transcription JSON file (not sure what I can do with it; but I am still learning) and SRT subtitles for MP4 file in S3 bucket. Now, I obviously want to merge the two, so I can show the video with subtitles.
Can I do it inside Amazon Transcribe? I know there are third-party tools to do that; but I would prefer to have a single workflow to do everything. I couldn't find anything in the docs - just a very short section on how to generate subtitles.

UPDATE: I tried to create a job in AWS Elemental MediaConvert, and got the following error: Media target [1] cannot convert non-EIA-608 to EIA-608 (invalid conversion from SRT to Embedded attempted)

Pedro_F · Answer

Hi,

You cannot do it directly from Transcribe, you would need to use AWS Elemental MediaConvert (Caption Selector, external file) to do that : https://docs.aws.amazon.com/mediaconvert/latest/ug/set-up-captions-in-outputs.html

Please refer to this document for a list of supported caption workflows for sidecar captions support : https://docs.aws.amazon.com/mediaconvert/latest/ug/sidecar-captions-support-tables-by-container-type.html. You can see that the supported caption output formats are all text-based (IMSC, WebVTT, TTML for example), not embedded like EIA-608.

You can automate this workflow using EventBridge to trigger the MediaConvert job as soon as the Transcribe job is finished : https://aws.amazon.com/eventbridge/features/

Can I merge subtitles with MP4 in AWS transcribe?

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