Transcribe long TwitCasting archives ツイキャス casts, word for word.
A TwitCasting (ツイキャス) live cast transcribes from the archive you download and upload here, with Japanese detected automatically, and a 2.5-hour cast comes back in about 5 minutes. The first 20 minutes are free, and three 2.5-hour casts (450 minutes) fit the $6 pack of 500 minutes.
From the archive to the text
Casts are talk-heavy, which makes them good material for text.
Getting the archive
Use the archive of your own cast, downloaded where your account offers it, or the copy your broadcasting app or OBS saved locally. Check the format of what you saved; it is usually a video file. If the upload refuses the archive, convert it to MP3 first.
Chatting casts read well
Many casts are a broadcaster talking to viewers and answering comments for hours. That reads well as text: the brief pulls out what was announced, and the chapters follow each topic change. Comment reading, greetings to regulars and long tangents all stay in the text, so trim what you do not need before posting.
Three casts on one pack
A 2.5-hour cast is 150 minutes. Three of them use 450 minutes of the $6 pack of 500. A daily 2.5-hour cast for a month is about 4,500 minutes, which needs the $24 pack of 5,000. Casting twice a week for 2.5 hours comes to about 1,300 minutes a month, which fits the $12 pack of 2,000.
Uses for the text
Post a summary for viewers who missed the cast, add subtitles to a highlight re-upload, or keep a searchable record of what you promised fans. The chat answers questions such as when you mentioned the next event. Regular viewers can catch up on a missed cast in a few minutes of reading.
Cast archives elsewhere
Most cast archives are watched once, if at all, and never written down.
✗ Without text
Hours of talk with no way to search them.
- OpenAI's Whisper API rejects anything over 25 MB
- Viewers asking what they missed
- Announcements buried in the second hour
- Subtitles done by hand
- Tools that cut the cast short
- No record of answers to comments
✓ With the archive transcribed
Each cast, readable and searchable.
- Japanese detected for you
- About 5 minutes for 2.5 hours
- Chapters for every topic
- Announcements in the brief
- SRT ready for subtitles
- 20 minutes free to try
Sample
A TwitCasting cast, as it comes back.
This sample is illustrative, written for this page and not taken from a real cast. The timestamps follow a 2.5-hour cast.
Export
One transcript. Five clean formats.
Every pack exports all five — no format is held back for a higher tier.
Plain text
De-ummed paragraphs. Ready to paste.
SRT captions
Timed to the speech. Every video editor reads this.
WebVTT
HTML5 player + YouTube uploads.
Show notes
Formatted with chapters and pull-quotes.
Machine-readable
Timestamped text for your own tools.
Pricing
Honest pricing, no surprises.
A pack from $6 (500 minutes) opens the full transcript. After that, no subscription and no auto-renew — every tier is a one-time minute pack, and credits never expire. Buy once, use the minutes whenever you need them.
Casual pack
$6/500 min
8 hours of audio — $0.72 an hour. One-time — credits never expire.
- 500 minutes of audio
- All export formats
- Unlimited AI chat per transcript
- Executive summary & key quote
Best value
$12/2,000 min
33 hours of audio — $0.36 an hour. Credits never expire.
- 2,000 minutes of audio
- Priority queue
- All export formats
- Unlimited AI chat per transcript
Bulk pack
$24/5,000 min
83 hours of audio — $0.29 an hour. Credits never expire.
- 5,000 minutes of audio
- Priority queue
- API access for batch pipelines
- All export formats
FAQ
TwitCasting archives, the common questions.
How long does a 2.5-hour cast take?
About 5 minutes, since processing takes about 2 minutes per audio hour. The proof page shows a 2.48-hour file finished in 200 seconds. On a home connection, sending the file often takes longer than transcribing it.
What does it cost to transcribe my casts?
Your first visit includes 20 free minutes. A 2.5-hour cast uses 150 minutes of the $6 pack of 500. A month of daily casts, about 4,500 minutes, belongs on the $24 pack of 5,000.
Can I paste the TwitCasting URL?
TwitCasting links are not read directly. Download the archive and upload it, or paste a YouTube link if you also streamed there. A cast saved by OBS on your own computer also works, often as an MKV or MP4 depending on its output settings.
Is there a size or length limit?
Each file can be up to 10 hours or 5 GB. Before the first pack, uploads go up to 2 GB, and a cast over 6 hours starts once a pack is on the account. A cast longer than 10 hours goes in as two files.
Does it handle Japanese mixed with English?
Yes. The language is detected automatically from 99, and a cast that switches between Japanese and English is detected on its main language with the switches handled.
Which exports come back, and is the cast kept?
Downloads come as TXT, DOCX, SRT, VTT and JSON. Cast archives are transcribed on our own servers and are never used for training. There is no integration with TwitCasting; it works on the file afterwards, and you should send only casts you have the right to use.
Related
More Japanese and stream pages
Send your cast archive. The first 20 minutes are free.
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