Fix: single autogenerated subtitle, better GraphQL support, proper audio file previews, improved documentation

.gitignore

@@ -58,6 +58,7 @@ yalc.lock
 
 # Compiled plugin
 lib
+dist
 
 .env
 .env.local

README.md

@@ -185,9 +185,16 @@ export default function MuxVideo({playbackId, title}: {playbackId?: string; titl
 
 ### Signed URLs (private playbacks)
 
-To enable [signed urls](https://docs.mux.com/docs/security-signed-urls) with content uploaded to Mux, you will need to check the "Enable Signed Urls" option in the Mux Plugin configuration. Assuming that the API Access Token and Secret Key are set (as per the [Quick start](#quick-start) section).
+To enable [signed URLs](https://docs.mux.com/docs/security-signed-urls) with content uploaded to Mux, you will need to check the "Enable Signed Urls" option in the Mux Plugin configuration. This feature requires you to set the API Access Token and Secret Key (as per the [Quick start](#quick-start) section).
 
-More information on this feature is available on Mux's [docs](https://docs.mux.com/docs/headless-cms-sanity#advanced-signed-urls)
+📌 **Note**: When the signed URL option is triggered, the plugin will cache a `signingKeyPrivate` in a private document in the dataset. This key is used by Mux to sign the uploads, and if it's incorrect your uploads will fail. If that's the case, you can delete the secrets document and try again:
+
+```bash
+# Using the Sanity CLI, delete the secrets, then re-open the plugin and configure it again
+sanity documents delete secrets.mux
+```
+
+More information on signed URLs is available on Mux's [docs](https://docs.mux.com/docs/headless-cms-sanity#advanced-signed-urls)
 
 ### MP4 support (downloadable videos or offline viewing)
 
@@ -235,6 +242,27 @@ If `encoding_tier: 'smart'`, editors can still choose to use the `baseline` enco
 
 More information on the feature is available on Mux's [documentation](https://docs.mux.com/guides/use-encoding-tiers). Also, read more on the feature announcement on Mux's [blog](https://www.mux.com/blog/our-next-pricing-lever-baseline-on-demand-assets-with-free-video-encoding)
 
+### Auto-generated subtitles and captions
+
+If you've enabled smart encoding, you can use Mux's [auto-generated subtitles](https://docs.mux.com/guides/video/auto-generated-subtitles) feature. Unless you pass `disableTextTrackConfig: true` to the configuration, users will be able to choose a language to auto-generate subtitles for uploaded videos. Refer to Mux's documentation for the list of supported languages.
+
+You can also define a default language for the upload configuration form:
+
+```js
+import {muxInput} from 'sanity-plugin-mux-input'
+
+export default defineConfig({
+  plugins: [
+    muxInput({
+      encoding_tier: 'smart',
+      defaultAutogeneratedSubtitleLang: 'en', // choose from one of the supported languages
+    }),
+  ],
+})
+```
+
+If your videos are always spoken in a specific language and you want to include captions by default, you can use `disableTextTrackConfig: true` together with `defaultAutogeneratedSubtitleLang` to transcribe captions for every uploaded asset without needing user interaction.
+
 ## Contributing
 
 Issues are actively monitored and PRs are welcome. When developing this plugin the easiest setup is: