Dub a 60-second clip into Hindi: Sume step costs before translation

The steps and the cost

Sume has no single dubbing endpoint, so a dub is a chain: detach the audio ($0.01), transcribe it ($0.01 for one minute), translate the text yourself, then synthesise it in Hindi with TTS. For a 60-second clip and a Hindi script of about 900 characters, the Sume steps total $0.01 + $0.01 + 900 x $0.0475 / 1,000 = $0.01 + $0.01 + $0.04275 = $0.06275, before translation and any editing time.

The 900 characters is an assumption for planning. Count your real translated text and use the exact length.

Step table

Each price comes from the Sume docs or the repository's golden pricing file.

How each step works

Detach the audio from a media.sume.com video as a 16 kHz mono file, or an mp3, then pass its URL to STT with duration_seconds: 60. Use words[] or sentence segmentation to see where each line starts, so your translation can follow the same rhythm.

Translate sentence by sentence, keeping each line close to the original length. Hindi often runs longer than English, so the dub may exceed the slot. Fix that by trimming the translation first, and use generation_config.speed (0.6 to 1.5) as a last resort, since a fast voice sounds hurried.

For the final voice, set language to hi and pick a voice that speaks Hindi. Join per-sentence audio files in order with timeline audio concat, then place the audio back on the video.

Honest limits

This keeps the original timing only as well as your translation allows. It does not change lip movements; if the speaker's face is on screen, the mouth will not match the Hindi. A voiceover over a screen recording or b-roll is the easiest case. Check the result with a Hindi speaker before you publish.

• Keep the original audio file in case you redo the translation.
• Number your sentences so audio files stay in order.
• Keep the translation in a separate file you can edit.
• Never resubmit a paid job that looks slow; poll its status.

Scaling the estimate

The same arithmetic applies to longer clips. A 5-minute video with 4,500 translated characters would cost one detach ($0.01), 5 minutes of STT ($0.05) and 4.5 x $0.0475 = $0.21375 of voice, which is $0.27375 in total. Keep the sources under the limits: audio detach reads up to 1,800 seconds, and each STT job takes at most 600 seconds. Long dubs are best built scene by scene, so one bad translation costs you one scene of voice, not the whole video, and you can send the scenes to a reviewer in parallel.