How to Transcribe an X Space into Text and SRT Captions

A useful X Space can contain an hour of product decisions, technical explanations, interview answers, or community questions. Audio is difficult to search and quote accurately. A transcript turns the replay into notes you can review, edit, caption, and summarize.

Downloader NX can transcribe a public recorded Space when its replay media is still available. The free workflow is designed for recordings up to 90 minutes and performs speech recognition on temporary audio that is deleted after processing.

Step 1: verify the replay before transcribing

Paste the Space URL into the X Spaces replay checker. Transcription is available only when the result is recorded. A scheduled or live Space has no completed replay yet. An unavailable Space has no public audio for the speech model to process.

Step 2: choose the spoken language

Use automatic detection when the conversation has one dominant language. Select English, Chinese, Japanese, or Spanish when you already know the primary language. Supplying the correct language reduces false words, especially for short introductions, names, and technical terms.

Mixed-language Spaces are harder. Automatic detection normally chooses one main language for the file, so code-switching and short phrases in another language may need manual correction.

Step 3: create the transcript

Select Create transcript. The server first retrieves and joins the public replay audio, then runs a local speech-to-text model. A one-hour Space on a small CPU server can take several minutes. Keep the page open and avoid launching duplicate jobs.

The result includes:

• editable plain text for notes and search;
• timestamped segments;
• detected language and duration;
• SRT captions suitable for many video editors and media players.

Step 4: review the transcript

Automatic speech recognition is a draft, not an authoritative record. Review names, numbers, product terms, URLs, acronyms, and statements where speakers interrupt each other. Headphones make it easier to compare uncertain segments with the original audio.

For a publishable transcript, add speaker labels manually. X replay media does not always expose clean speaker changes to the speech model, so assigning names automatically can create confident but incorrect attribution.

Step 5: export text or SRT

Use Download TXT for notes, search indexing, or summarization. Use Download SRT when you need captions. SRT contains a numbered sequence of start and end timestamps followed by the recognized text.

If captions drift later in the recording, check whether the editor changed playback speed or removed silence after the transcript was generated. Generate captions from the final audio cut when precise synchronization matters.

How to improve transcription accuracy

• Use the original replay instead of a screen recording with notification sounds.
• Select the known language instead of automatic detection for short recordings.
• Correct a glossary of names, companies, products, and technical abbreviations first.
• Split very long editorial work into logical sections after export.
• Mark uncertain words rather than inventing a polished sentence.
• Keep timestamps when the transcript will be used for quotations or review.

Common errors

No public replay: check whether the Space is live, expired, deleted, or unrecorded. Read the recording availability guide.

Processing limit reached: the free endpoint limits repeated high-cost jobs from one network. Wait for the stated window instead of resubmitting.

Model unavailable: the speech model may still be downloading or the server may not have enough temporary resources. Audio export can still work independently.

Empty or inaccurate text: the replay may contain music, long silence, overlapping speakers, poor microphones, or a language different from the selected option.

Privacy and publication checklist

1. Confirm you may process and store the speakers' words.
2. Remove private information before sharing the transcript.
3. Verify quotations against the audio and preserve context.
4. State that automated transcription was edited when accuracy matters.
5. Credit the host and speakers when republishing authorized material.

If you only need the replay file, use the X Spaces audio download guide. Transcribe when searchable text, captions, accessibility, or structured notes provide additional value.