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SKILL.md
npx skills add eachlabs/skills --skill subtitle-generation
Generate subtitles and captions for videos using each::sense AI. Create auto-generated subtitles, multi-language captions, animated TikTok-style text, SRT/VTT exports, speaker diarization, and burned-in subtitles.
npx skills add eachlabs/skills --skill subtitle-generation
Generate professional subtitles and captions for videos using each::sense. This skill creates accurate transcriptions, multi-language subtitles, animated captions, and various export formats optimized for social media, video production, and accessibility.
| Format | Extension | Use Case |
|---|---|---|
| SRT | .srt | Universal, most video players and editors |
| VTT | .vtt | Web video, HTML5 players, YouTube |
| Burned-In | .mp4 | Social media, no player support needed |
| JSON | .json | Custom applications, programmatic access |
| ASS/SSA | .ass | Advanced styling, anime subtitles |
Automatically transcribe speech from a video file with accurate word-level timestamps.
Generate subtitles in multiple languages directly from the audio.
Create eye-catching animated captions with word-by-word highlighting, popular on TikTok and Instagram Reels.
Generate clean subtitle files in standard formats for use in video editors or streaming platforms.
Generate subtitles that identify and label different speakers in conversations, interviews, or podcasts.
Translate existing subtitles from one language to another while preserving timing.
Render subtitles directly into the video file (hardcoded/embedded) so they appear without needing player support.
Create karaoke-style subtitles with word-by-word highlighting, perfect for music videos and lyric content.
Fine-tune subtitle timing for better synchronization with audio.
Generate subtitles for multiple videos in a single workflow.
When requesting subtitles, include these details in your prompt:
Ask your users before generating:
"Do you want fast & cheap, or high quality?"
| Mode | Best For | Speed | Quality |
|---|---|---|---|
max | Final subtitles, professional content, accuracy-critical | Slower | Highest |
eco | Quick drafts, review copies, bulk processing | Faster | Good |
Use session_id to iterate on subtitle generation:
each::sense supports subtitle generation in 50+ languages including:
| Language | Code | Notes |
|---|---|---|
| English | en | US, UK, AU variants |
| Spanish | es | Latin American and European |
| French | fr | France and Canadian |
| German | de | |
| Japanese | ja | |
| Korean | ko | |
| Chinese | zh | Simplified and Traditional |
| Arabic | ar | RTL support |
| Hindi | hi | |
| Portuguese | pt | Brazilian and European |
| Error | Cause | Solution |
|---|---|---|
Failed to create prediction: HTTP 422 | Insufficient balance | Top up at eachlabs.ai |
| Transcription quality low | Poor audio quality | Provide cleaner audio source |
| Language detection failed | Mixed languages or unclear speech | Specify source language explicitly |
| Timeout | Long video or complex processing | Set client timeout to minimum 10 minutes |
Important: Subtitle generation can take significant time for long videos.
each-sense - Core API documentationvideo-generation - Generate videos with built-in captionsvoice-audio - Audio processing and speech synthesisvideo-edit - Video editing and post-productioncurl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Transcribe this video and generate subtitles with accurate timestamps. Output as SRT format. The video contains English speech."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/interview-video.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate subtitles for this video in English, Spanish, and French. Provide separate SRT files for each language. The original audio is in English."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/product-demo.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Add TikTok-style animated captions to this video. Use bold white text with black outline, word-by-word pop animation, centered at the bottom third of the screen. Make it trendy and engaging."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/short-form-content.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Transcribe this video and export subtitles in both SRT and VTT formats. Ensure proper line breaks (max 42 characters per line, 2 lines max). Include timestamps accurate to milliseconds."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/documentary.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate subtitles for this podcast with speaker diarization. There are 2 speakers - identify them as Speaker 1 and Speaker 2 (or Host and Guest if you can determine roles). Format each line with the speaker label."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/podcast-episode.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Translate these English subtitles to Japanese. Preserve the original timing and format. Ensure natural Japanese phrasing rather than literal translation."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/original-subtitles.srt"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate subtitles for this video and burn them directly into the video. Use white text with black background box, Arial font, positioned at bottom center. Output a new video file with embedded subtitles."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/social-media-clip.mp4"]
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Create karaoke-style subtitles for this music video. Display lyrics with word-by-word highlighting as they are sung. Use a gradient color change effect (from white to yellow) for the currently sung word. Center the text on screen."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": ["https://example.com/music-video.mp4"]
}'# First, upload video and generate initial subtitles
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate subtitles for this video"}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"session_id": "subtitle-timing-project",
"file_urls": ["https://example.com/video-with-delay.mp4"]
}'
# Then adjust timing in the same session
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "The subtitles are appearing 500 milliseconds too early. Shift all subtitle timings forward by 500ms and regenerate the SRT file."}],
"model": "eachsense/beta",
"stream": true,
"session_id": "subtitle-timing-project"
}'curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate English subtitles for all these videos. Output SRT files for each. Use consistent formatting across all videos: max 2 lines, 42 characters per line, minimum 1 second display time per subtitle."}],
"model": "eachsense/beta",
"stream": true,
"mode": "max",
"file_urls": [
"https://example.com/episode-01.mp4",
"https://example.com/episode-02.mp4",
"https://example.com/episode-03.mp4"
]
}'"Generate [format] subtitles for this video.
Source language: [language].
[Number] speakers: [roles if known].
Style: [font, color, position requirements].
Special terms to recognize: [names, technical words].
Additional requirements: [line length, timing, etc.]"# Initial subtitle generation
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Generate subtitles for this video with speaker identification"}],
"model": "eachsense/beta",
"stream": true,
"session_id": "subtitle-project-001",
"file_urls": ["https://example.com/interview.mp4"]
}'
# Refine based on feedback
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Change Speaker 1 label to John and Speaker 2 to Sarah. Also fix the spelling of TensorFlow wherever it appears."}],
"model": "eachsense/beta",
"stream": true,
"session_id": "subtitle-project-001"
}'
# Add styling and export
curl -X POST https://eachsense-agent.core.eachlabs.run/v1/chat/completions \
-H "Content-Type: application/json" \
-H "X-API-Key: $EACHLABS_API_KEY" \
-H "Accept: text/event-stream" \
-d '{
"messages": [{"role": "user", "content": "Now create a burned-in version with the corrected subtitles. Use yellow text for John and cyan for Sarah."}],
"model": "eachsense/beta",
"stream": true,
"session_id": "subtitle-project-001"
}'