ช่วยเหลือ

"# Getting started\n\n`Free` `Pro`\n\n1. Install the extension in Chrome or Edge.  \n\n2. Open a video page (e.g. YouTube).  \n\n3. Open the extension from your browser toolbar.  \n\n![Getting started](/assets/images/get-started-1.png)\n\n**If it doesn’t start immediately**\n\n- Refresh the page.  \n\n- Start playback before opening the extension.  \n\n- Ensure your browser is up to date (latest Chrome/Edge).  \n\n> Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.<br/>\n\n> Pro: Available only in Google Chrome on desktop.\n\n<tags>getting started, install, setup</tags>\n\n---\n\n# Where can I find the extension?\n\n`Free` `Pro`\n\nAfter installation:  \n\n1. Open Chrome or Edge.  \n\n2. Click the puzzle-piece icon (Extensions) in the toolbar.  \n\n3. Pin Transpose to keep it visible.  \n\n4. Click the Transpose ▲▼ icon to open it.  \n\n![Transpose extension icon in Chrome/Edge toolbar](/assets/images/extension-icon-toolbar.png)\n\n<tags>install, pin, toolbar, find extension</tags>\n\n---\n\n# Is it free to use?\n\n<!-- id:is-it-free -->\n\n`Free` `Pro`\n\nYes. **Transpose Classic** is free and will remain free forever.  \n\nOur Mission: **Encouraging Music Making**\n\nWe believe that making music is for everyone. That's why the core of Transpose is a powerful, free tool for your daily practice sessions. It is our contribution to the music community, to help as many people as possible grow and enjoy playing.\n\nThe Classic version contains all the features from the original extension, which we've been improving since 2017.\n\n- Works on YouTube, Spotify, SoundCloud, Deezer, and many more.  \n\n- Includes pitch, speed, and loop control.  \n\n- Keeps track of your recent history song settings\n\n**Transpose Pro** is a new, optional upgrade.  \n\nIt adds an improved pitch algorithm, plus extra features like formant control, vocal reducer, advanced loops, clips, and presets.  \n\nUpgrading is not required. Classic users keep the same free experience they always had.\n\n<tags>pricing, cost, free, pro, classic, upgrade</tags>\n\n---\n\n# Can I use Transpose on multiple devices?\n\n`Free` `Pro`\n\nYes.  \n\n- **Classic (Free)** works on any desktop or laptop with Chrome or Edge.  \n\n- **Pro** only needs to be purchased once per Google account.  \n\n  As long as you sign in with the same Google account, your Pro access is valid on all your devices. Pro is only availabe for Chrome desktop.  \n\nTranspose also works in other Chromium-based browsers (Brave, Opera, Vivaldi).  \n\nIt is not available for Android, iOS, Safari, or Firefox.\n\n<tags>devices, sync, account, multiple computers, chrome, edge</tags>\n\n---\n\n# Why do some sites need extra permissions?\n\n`Free` `Pro`\n\nSome sites restrict direct access to their audio/video elements.  \n\nTranspose may request permissions to capture the tab’s audio as fallback.  \n\n- Permissions are required only for media control.  \n\n- No browsing history or personal data is collected.  \n\n- You can revoke site permissions anytime in browser settings.  \n\n<tags>permissions, privacy, security, access</tags>\n\n---\n\n# Is my privacy guaranteed?\n\n`Free` `Pro`\n\nYes.  \n\n- Your history and settings are stored locally or in your Google account.  \n\n- Only aggregated usage statistics (Google Analytics) are collected.  \n\n- No personal data or audio is uploaded.  \n\n- We do not sell your data.\n\nWe comply with [Chrome Web Store policies](https://developer.chrome.com/webstore/program_policies).  \n\nFor Pro features like cloud storage, we use Google Sign-In. Please read our [privacy policy](https://transpose.video/policies) for complete details.\n\n<tags>privacy, security, data, analytics, GDPR</tags>\n\n---\n\n# Troubleshooting: No media - No sound - Connection error\n\n<!-- id:no-media -->\n\n`Free` `Pro`\n\nIf you see **'No media'** or **'Connection error'**, or there is no sound:  \n\n- Refresh the page.  \n\n- Start playback before opening the extension.  \n\n- Open the video on its dedicated page (not embedded).  \n\n- Ensure you are using the latest Chrome or Edge.\n\nIf the problem persists, temporarily disable extensions that may interfere with audio or page execution, such as:\n\n  - VPNs with filtering\n\n  - Audio capture or recording extensions\n\n  - YouTube enhancers or equalizers\n\n  - Exam or proctoring software\n\nSome environments intentionally restrict access to media and advanced browser features. This is common on:\n\n  - School or exam devices\n\n  - Work or enterprise-managed browsers\n\n  - Systems with proctoring or lockdown software\n\nNote that some sites do not allow connection to their media. As a fallback you can use Tab capture mode.\n\nIf none of the above helps, reinstall the extension and try again.\n\n<tags>troubleshooting, no media, no sound, connection error, not working, tab capture</tags>\n\n<!-- suggest screenshot: settings panel with Tab Capture toggle -->\n\n---\n\n# Audio quality issues: glitches, stuttering, distortion\n\n`Free` `Pro`\n\nFree and Pro versions both depend on device performance.  \n\nTips:  \n\n- Close other tabs and applications.  \n\n- Disable unnecessary extensions.  \n\n- Check your task manager for background processes (e.g. updates, backups, virus scans) that may affect audio performance.\n\n- Restart browser or computer.  \n\n- Check sound card sample rate (48kHz recommended).  \n\n**Pro users**:  \n\n- Pro uses an improved algorithm that reduces clicks and noise.  \n\n- Delay is much lower compared to the Free version.  \n\n- On weak PCs, glitches can still occur.  \n\n<tags>troubleshooting, audio quality, glitches, jitter, stuttering, distortion, performance, noise</tags>\n\n---\n\n# Why is there a delay between audio and video?\n\n`Free`\n\nPitch shifting requires buffering the audio (200–400ms).  \n\nThis delay between audio and video is normal in the Free version.  \n\nThe Pro version uses a different audio engine, and has by default a much better latency.\n\n<tags>delay, latency, sync, lag, free version</tags>\n\n---\n\n# Do Pro users have less delay?\n\n`Pro` `Features`\n\nYes.  \n\nTranspose Pro uses a **more advanced algorithm** with:  \n\n- Minimal audio delay (much closer sync with video).  \n\n- Fewer clicks and artifacts.  \n\n- More natural sound, especially at extreme pitch or speed changes.  \n\n<tags>delay, latency, sync, lag, pro version, features</tags>\n\n---\n\n# Can I use local audio files?\n\n`Free` `Pro`\n\nYes.  \n\n1. Open the extension settings (⋮ → *Play File*).  \n\n2. Choose an audio file (mp3, wav, etc.) from your computer.  \n\n3. Play it and adjust pitch/speed/loops.  \n\n<tags>local files, mp3, wav, offline, from computer</tags>\n\n---\n\n# Can I save audio to a file?\n\n`Free` `Pro`\n\nNo.  \n\nSaving audio streams (e.g. from YouTube) is not allowed by their Terms of Service.  \n\nFor offline editing or exporting, use external tools such as **Audacity**, or the audio or video recorder on your device while playing your work.\n\n<tags>save, export, download, record, audacity, mp3</tags>\n\n---\n\n# Can I use Transpose with Chromecast?\n\n`Free` `Pro`\n\nYes, but only when you cast your **desktop**.  \n\n<tags>chromecast, casting, tv</tags>\n\n---\n\n# What is Auto Save?\n\n`Free` `Pro`\n\nWhen a new video start and you make a change to the Transpose controls, it is saved in your Recent history automatically. The video settings are recalled automatically if you play the video later again, and open the Transpose Extension.\n\nYou can disable this in settings.  \n\n<tags>settings, auto save, default</tags>\n\n---\n\n# What is Auto Reset?\n\n`Free` `Pro`\n\nWhen a new video starts:  \n\n- Previous settings are saved, if auto save is on. \n\n- The settings for the video are set to default.\n\nYou can disable this in settings.  \n\n<tags>settings, auto reset, default</tags>\n\n---\n\n# What is Tab Capture mode?\n\n`Free` `Pro`\n\nTab Capture processes **all audio** from the browser tab.  \n\nUse it when direct access to a video/audio element is blocked.  \n\n<tags>tab capture, tabcapture, troubleshooting, settings, no media</tags>\n\n---\n\n# What is Transpose Pro?\n\n<!-- id:pro-what -->\n\n`Pro` `Features`\n\nTranspose Pro is the next step after **Transpose Classic (Free)**.  \n\nClassic already includes all the functionality of the old one-time-payment Pro — nothing has been removed.  \n\nThe new Pro is a **premium upgrade** on top of Classic, designed for musicians who want higher quality, more precision, and advanced practice tools.  \n\n**Classic (Free) includes:**\n\n- Pitch shift ±12 semitones & fine-tune  \n\n- Speed control from 25% to 400%  \n\n- Unlimited loops  \n\n- Works on YouTube, Spotify, SoundCloud, Deezer, local files & more  \n\n- No account required  \n\n- No ads  \n\n- 1M+ users worldwide — free forever  \n\n**Pro adds all of this on top:**\n\n- **Premium high-quality, low-latency pitch shifter**  \n\n  - More natural sound, less delay, fewer clicks and artifacts  \n\n- **Formant control** — change timbre/voice color without changing pitch  \n\n- **Vocal Reducer** — lower centered vocals in stereo mixes  \n\n- **Advanced looping** with:  \n\n  - High-resolution timeline and draggable markers  \n\n  - Wait-in counts, laps, and more accurate playback  \n\n  - Scrubbing preview when paused  \n\n- **Clips & sequences**  \n\n  - Save fragments with their own pitch, speed, formant, and vocal reducer settings  \n\n  - Chain clips into practice sequences (e.g. slow → medium → original tempo)  \n\n- **Efficient looping station** — rehearse with multiple markers and loop ranges  \n\n- **Save your work in the cloud**  \n\n  - Clips, sequences, and presets sync across devices when you sign in  \n\n- **Custom keyboard shortcuts** for faster control  \n\n- **Side panel UI**  \n\n  - Always on top, no popup interruptions  \n\n  - Easier access to all Pro features  \n\n- **Volume slider & Power toggle** for quick control  \n\n> Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.<br/>\n\n> Pro: Available only in Google Chrome on desktop.\n\n**Summary:**  \n\n- Classic (Free) = everything you know and already use, forever free.  \n\n- Pro = optional upgrade with **better sound quality, less delay, and powerful new tools** for practice and rehearsal.  \n\n👉 Upgrading is never required — but if you want the best experience, Pro is for you.\n\n<tags>pro, features, classic, free, upgrade, pitch, speed, loop, formant, vocal reducer, clips, presets, sync</tags>\n\n---\n\n# How do advanced loops work?\n\n`Pro` `Features`\n\nIn Transpose Pro, loops are much more precise and flexible than in the Free version.  \n\nThey use a higher-accuracy algorithm and frame-based timing for smooth, gapless playback.\n\n**Creating an advanced loop**\n\n- Click the **Range button**.  \n\n- If there are only **two markers**, they are auto-selected as the loop range and the **repeat icon** is enabled.  \n\n- If there are **more markers**, all marker buttons and timeline heads (①, ②, ③ …) start blinking:  \n\n  - Click once to choose the start marker.  \n\n  - Click again to choose the end marker.  \n\n > Long press a marker button to get in to range select mode directly\n\n**Loop playback options**\n\n- **Repeat icon** → toggle the current loop on/off.  \n\n- **Laps icon** → repeat the entire song.  \n\n- **Wait-in count** → insert 1–4 metrical counts before each repeat, based on the tempo setting.  \n\n**Marker interactions**\n\n- **Click a marker** → jump playback to that time.  \n\n- **Long-press a marker** → enter *select range mode*.  \n\n- **Markers button** or **Shift + click** → enter *edit markers mode*, where you can:  \n\n  - Rename the label.  \n\n  - Adjust the exact time (input).  \n\n  - Sync the marker to the current playback position (location icon).  \n\n**Timeline**\n\n- Markers are shown as rounded numbered circles (①, ②, ③ …) in chronological order.  \n\n- Click a circle to jump to that time.  \n\n- Click anywhere on the timeline bar to jump; when paused you get a short (≈300 ms) preview (*scrub time* configurable in Settings).  \n\n- Markers are always sorted by time.  \n\n- Click the **+ button** at the end of the marker list to create a new marker at the current time.  \n\n**Tip:** Combine advanced loops with **clips** (see [What are clips and how do I use them?](#what-are-clips-and-how-do-i-use-them)) to build step-by-step practice sequences.\n\n<tags>pro, features, looping, loops, markers, clips, timeline</tags>\n\n<!-- suggest screenshot: Pro timeline with markers blinking and loop range active -->\n\n---\n\n# How do loops work in the Free version?\n\n`Free` `Features`\n\nThe Free version has a simpler loop system with basic markers.\n\n**Adding markers**\n\n- Click the **bookmark icon** to save the current time as a marker.  \n\n- Each marker shows its time and optional label.  \n\n**Using markers**\n\n- Click the **→ jump icon** to move playback to that marker.  \n\n- If two markers follow each other in time, you can loop that segment by clicking the **repeat icon** between them.  \n\n**Loop toolbar options**\n\n- **Repeat song** → loop the entire track.  \n\n- **Wait-in count** → add a short count-in before repeating.  \n\n- **Sort** → reorder markers chronologically.  \n\n- **Add** → create a new marker at the current time.  \n\nFree loops are handy for quick practice ranges, but they lack the higher precision, editing, and sequencing options of Pro advanced loops.\n\n<tags>free, features, looping, loops, markers</tags>\n\n<!-- suggest screenshot: Pro markers + clips UI -->\n\n---\n\n# Why is there no Varispeed (linked pitch & speed)?\n\n`Free` `Pro`\n\nTranspose intentionally keeps **pitch and speed independent**.  \n\n- Musicians need to slow down fast passages **without changing key**, or change key **without changing tempo**.  \n\n- Linking them (varispeed, like a tape deck) would make practice harder, not easier.  \n\n- Independent control is the core purpose of Transpose.  \n\n<tags>varispeed, pitch, speed, features, linked</tags>\n\n---\n\n# What are clips and how do I use them?\n\n`Pro` `Features`\n\nIn Transpose Pro, practice fragments are stored as **clips**.  \n\nA clip is a saved audio range (loop) with its own playback and effect settings.  \n\nUnlike simple presets, clips are tied to a time range in the track.\n\n**Creating a clip**\n\n1. Select a range by setting start and end markers.  \n\n2. Click the **scissors ✂️ icon** to cut and save the range as a clip.  \n\n**Editing a clip**\n\n- Click **start time**, **end time**, or **name** to edit them directly.  \n\n- Use the **+ menu** inside the clip to add or adjust parameters such as speed, transpose, formant, or vocal reducer depth.  \n\n- Each clip remembers its own parameter values.  \n\n**Playing clips**\n\n- Press **Play** on a clip to start playback from that point; the rest of the sequence continues after it.  \n\n- Clips repeat automatically according to their loop setting.  \n\n- You can insert **wait counts** between clips to pause before the next one starts.  \n\n**Managing clips**\n\n- Duplicate a clip quickly from the **⋮ More menu**.  \n\n- Rename or reorder clips to build your own practice flow.  \n\n- Chain clips together to form a **sequence** (e.g. the same fragment at different speeds or pitches).  \n\nClips let you practice step by step, gradually increasing speed or changing pitch, without having to reset settings manually.\n\n<tags>pro, features, clips, sequences, looping, fragments</tags>\n\n<!-- suggest screenshot: Pro Clips panel with multiple clips, showing start/end, speed, transpose -->\n\n---\n\n# What is Formant control?\n\n`Pro` `Features`\n\nFormant control changes the **timbre** (voice color) without affecting pitch.  \n\n- Useful for adapting male ↔ female voice range.  \n\n- Can make instruments sound darker or brighter.  \n\n<tags>pro, features, formant, timbre, voice, sound quality</tags>\n\n---\n\n# What is the Vocal Reducer?\n\n`Pro` `Features`\n\nThe Vocal Reducer uses **Mid-Side processing** to isolate and reduce the center channel of a stereo track, where vocals are typically placed.  \n\nIt is not perfect on every song, but it can lower vocals in many cases. Results depend on how the track is mixed.\n\n**Main controls:**\n\n- **Vocal reducer (Depth)**  \n\n  Master dry/wet control.  \n\n  - At **0%** the original signal passes through.  \n\n  - At **100%** you only hear the fully processed signal.  \n\n  - Default 80% = strong but blended effect.  \n\n- **Vocal Cut (vocalCut)**  \n\n  Crossfades between two reduction techniques:  \n\n  - **0%** → multi-band notch filters (precise, cleaner).  \n\n  - **100%** → phase cancellation (L–R subtraction, more aggressive, may add artifacts).  \n\n- **Center Focus (centerFocus)**  \n\n  Shifts the stereo focus of the reduction.  \n\n  - Useful if vocals are not perfectly centered.  \n\n  - Move slightly left or right to better target vocals before Mid-Side processing.  \n\n- **Precision (Q)**  \n\n  Controls the filter sharpness:  \n\n  - High Q = very narrow, surgical cuts.  \n\n  - Low Q = broader cuts, better for variable vocals but may affect nearby instruments.  \n\n- **Low Cut / High Cut**  \n\n  Pre-filters to clean the signal before reduction:  \n\n  - **Low Cut**: removes rumble below e.g. 100 Hz.  \n\n  - **High Cut**: removes hiss/“air” above e.g. 8000 Hz, helps reduce artifacts from cymbals/hi-hats.  \n\n**Tips:**  \n\n- Start with - **Vocal reducer (Depth)**   first, then fine-tune the other controls.  \n\n- Works best on stereo mixes where vocals are centered.  \n\n- May not fully remove vocals; it is designed for practice and karaoke use, not for studio-quality separation.  \n\n<tags>pro, features, vocal reducer, karaoke, mid-side, remove vocals</tags>\n\n<!-- suggest screenshot: Pro settings panel with Vocal Reducer controls -->\n\n---\n\n# How do I save presets?\n\n`Pro` `Features`\n\nSave your favorite pitch/speed/loop settings as presets.  \n\n- Presets appear as quick-select chips.  \n\n- Useful to recall your practice settings instantly.  \n\n<tags>pro, features, presets, settings, save</tags>\n\n---\n\n# Do my settings sync between devices?\n\n`Pro` `Features`\n\nYes.  \n\n- Sign in with your Google account.  \n\n- Enable sync in Chrome/Edge.  \n\n- Your presets, loops, and history will follow you across devices.  \n\n<tags>pro, sync, account, devices, cloud save</tags>\n\n---\n\n# Can I also use the popup instead of the side panel?\n\n`Pro` `Features`\n\nYes, you can easily switch between the two user interfacese. Open the Settings page (icon at the top right), then choose **Open in popup** or **Open in side panel**. \n\nPro keeps the improved audio engine in popup mode.\n\n<tags>pro, sidepanel, side panel, popup, ui</tags>\n\n---\n\n# How do I start the free trial?\n\n<!-- id:pro-trial -->\n\n`Pro` `Account`\n\nClick **Try Pro** in the extension.  \n\n- Sign in with Google.  \n\n- The side panel opens and activates your 1-week trial.  \n\n- No payment is required until the trial ends.  \n\n> Free: Works on desktop Chrome, Edge, and most Chromium-based browsers.<br/>\n\n> Pro: Available only in Google Chrome on desktop.\n\n<tags>pro, trial, account, free trial</tags>\n\n---\n\n# Why do I need to sign in with Google?\n\n`Pro` `Account`\n\nTranspose uses Google Sign-In to provide a secure and simple login experience.\n\n- **No new password to remember**: You can sign in with your existing Google account without creating a new password just for Transpose.\n\n- **Secure**: We rely on Google's trusted authentication system to protect your account.\n\n- **Cross-device access**: Your Pro subscription is linked to your Google account, so it works automatically on any computer where you're signed in.\n\nWe do not currently support other login methods like email and password.\n\n<tags>login, account, password, security, authentication</tags>\n\n---\n\n# How do I subscribe to Pro?\n\n`Pro` `Account`\n\nAfter your trial you can pick:  \n\n- **Monthly** subscription  \n\n- **Annual** subscription (discounted)  \n\n- **Lifetime access** (one-time payment)  \n\nPayments are processed by **Paddle**.  \n\n<tags>pro, subscribe, payment, paddle, billing, buy, purchase</tags>\n\n---\n\n# Do I need to pay again for another computer?\n\n`Pro` `Account`\n\nNo.  \n\nA single Transpose Pro subscription is linked to your **Google account**, not to a specific device.  \n\n- Sign in with the same Google account on each computer.  \n\n- Your Pro access and all saved clips, loops, and presets will be available.  \n\n👉 You only need **one subscription per Google account**, even if you use multiple devices.\n\n<tags>pro, subscribe, payment, account, devices, license</tags>\n\n---\n\n# How do I manage or cancel my subscription?\n\n<!-- id:pro-manage -->\n\n`Pro` `Account`\n\nUse the official Paddle **Customer Portal**:  \n\n👉 [Open Customer Portal](https://transpose.video/pro/customer-portal)  \n\nFrom there you can:  \n\n- Cancel your subscription  \n\n- Update payment method  \n\n- View/download invoices  \n\n<tags>pro, subscribe, cancel, paddle, billing, account, manage subscription</tags>\n\n---\n\n# How do I update my payment method?\n\n`Pro` `Account`\n\nIn the [Customer Portal](https://transpose.video/pro/customer-portal) → *Payment methods* → **Update**.  \n\n<tags>pro, payment, paddle, billing, account, credit card</tags>\n\n---\n\n# How do I view or download invoices?\n\n`Pro` `Account`\n\nInvoices are available in the [Customer Portal](https://transpose.video/pro/customer-portal).  \n\n- Go to **Payments** → **View Invoice**.  \n\n- Download PDF or request an updated invoice.  \n\n<tags>billing, invoice, paddle, receipt</tags>\n\n---\n\n# How does the lifetime plan work?\n\n`Pro` `Account`\n\n- One-time payment.  \n\n- Permanent access to all Pro features.  \n\n- No recurring charges.  \n\n- Invoices remain available in the Customer Portal.  \n\n<tags>pro, lifetime, payment, billing, one-time</tags>\n\n---\n\n# What happens after the free trial?\n\n`Pro` `Account`\n\n- Trial lasts 7 days.  \n\n- After that, Pro features stop unless you subscribe.  \n\n- The Classic version continues to work for free.  \n\n<tags>pro, trial, subscribe, expired</tags>\n\n---\n\n# What happened to the old Pro version?\n\n`Free` `Pro`  `Account`\n\nIn 2021, the Chrome Web Store removed support for paid extensions.\n\nAs a result, the original one-time-payment Pro version was made free for everyone.\n\nThat version is now called **Transpose Classic (Free)**.  \n\nWe believe that making music is for everyone. That's why the core of Transpose is a powerful, free tool for your daily practice sessions. It is our contribution to the music community, to help as many people as possible grow and enjoy playing.\n\nThe Classic version contains all the features from the original extension.\n\nThe new **Transpose Pro** is an upgraded edition with more advanced features and separate licensing.\n\nIf you once bought the old Pro, you now effectively have the same version with Classic.\n\nUpgrading is not required. With Classic you keep the same experience you've always had.\n\n<tags>classic, free, pro, history, legacy, old version</tags>"