base on This plugin generates thumbnail from video file or URL. It returns image in memory or writes into a file. It offers rich options to control the image format, resolution and quality. Supports iOS and Android. # video_thumbnail This plugin generates thumbnail from video file or URL. It returns image in memory or writes into a file. It offers rich options to control the image format, resolution and quality. Supports iOS and Android. [](https://pub.dev/packages/video_thumbnail) [](https://github.com/justsoft/)   ## Methods |function|parameter|description|return| |--|--|--|--| |thumbnailData|String `[video]`, optional Map<String, dynamic> `[headers]`, ImageFormat `[imageFormat]`(JPEG/PNG/WEBP), int `[maxHeight]`(0: for the original resolution of the video, or scaled by the source aspect ratio), [maxWidth]`(0: for the original resolution of the video, or scaled by the source aspect ratio), int `[timeMs]` generates the thumbnail from the frame around the specified millisecond, int `[quality]`(0-100)|generates thumbnail from `[video]`|`[Future<Uint8List>]`| |thumbnailFile|String `[video]`, optional Map<String, dynamic> `[headers]`, String `[thumbnailPath]`(folder or full path where to store the thumbnail file, null to save to same folder as the video file), ImageFormat `[imageFormat]`(JPEG/PNG/WEBP), int `[maxHeight]`(0: for the original resolution of the video, or scaled by the source aspect ratio), int `[maxWidth]`(0: for the original resolution of the video, or scaled by the source aspect ratio), int `[timeMs]` generates the thumbnail from the frame around the specified millisecond, int `[quality]`(0-100)|creates a file of the thumbnail from the `[video]` |`[Future<String>]`| Warning: > Giving both the `maxHeight` and `maxWidth` has different result on Android platform, it actually scales the thumbnail to the specified maxHeight and maxWidth. > To generate the thumbnail from a network resource, the `video` must be properly URL encoded. ## Usage **Installing** add [video_thumbnail](https://pub.dev/packages/video_thumbnail) as a dependency in your pubspec.yaml file. ```yaml dependencies: video_thumbnail: ^0.5.3 ``` **import** ```dart import 'package:video_thumbnail/video_thumbnail.dart'; ``` **Generate a thumbnail in memory from video file** ```dart final uint8list = await VideoThumbnail.thumbnailData( video: videofile.path, imageFormat: ImageFormat.JPEG, maxWidth: 128, // specify the width of the thumbnail, let the height auto-scaled to keep the source aspect ratio quality: 25, ); ``` **Generate a thumbnail file from video URL** ```dart final fileName = await VideoThumbnail.thumbnailFile( video: "https://flutter.github.io/assets-for-api-docs/assets/videos/butterfly.mp4", thumbnailPath: (await getTemporaryDirectory()).path, imageFormat: ImageFormat.WEBP, maxHeight: 64, // specify the height of the thumbnail, let the width auto-scaled to keep the source aspect ratio quality: 75, ); ``` **Generate a thumbnail file from video Assets declared in pubspec.yaml** ```dart final byteData = await rootBundle.load("assets/my_video.mp4"); Directory tempDir = await getTemporaryDirectory(); File tempVideo = File("${tempDir.path}/assets/my_video.mp4") ..createSync(recursive: true) ..writeAsBytesSync(byteData.buffer.asUint8List(byteData.offsetInBytes, byteData.lengthInBytes)); final fileName = await VideoThumbnail.thumbnailFile( video: tempVideo.path, thumbnailPath: (await getTemporaryDirectory()).path, imageFormat: ImageFormat.PNG, quality: 100, ); ``` ## Notes Fork or pull requests are always welcome. Currently it seems have a little performance issue while generating WebP thumbnail by using libwebp under iOS. ", Assign "at most 3 tags" to the expected json: {"id":"13000","tags":[]} "only from the tags list I provide: [{"id":77,"name":"3d"},{"id":89,"name":"agent"},{"id":17,"name":"ai"},{"id":54,"name":"algorithm"},{"id":24,"name":"api"},{"id":44,"name":"authentication"},{"id":3,"name":"aws"},{"id":27,"name":"backend"},{"id":60,"name":"benchmark"},{"id":72,"name":"best-practices"},{"id":39,"name":"bitcoin"},{"id":37,"name":"blockchain"},{"id":1,"name":"blog"},{"id":45,"name":"bundler"},{"id":58,"name":"cache"},{"id":21,"name":"chat"},{"id":49,"name":"cicd"},{"id":4,"name":"cli"},{"id":64,"name":"cloud-native"},{"id":48,"name":"cms"},{"id":61,"name":"compiler"},{"id":68,"name":"containerization"},{"id":92,"name":"crm"},{"id":34,"name":"data"},{"id":47,"name":"database"},{"id":8,"name":"declarative-gui "},{"id":9,"name":"deploy-tool"},{"id":53,"name":"desktop-app"},{"id":6,"name":"dev-exp-lib"},{"id":59,"name":"dev-tool"},{"id":13,"name":"ecommerce"},{"id":26,"name":"editor"},{"id":66,"name":"emulator"},{"id":62,"name":"filesystem"},{"id":80,"name":"finance"},{"id":15,"name":"firmware"},{"id":73,"name":"for-fun"},{"id":2,"name":"framework"},{"id":11,"name":"frontend"},{"id":22,"name":"game"},{"id":81,"name":"game-engine "},{"id":23,"name":"graphql"},{"id":84,"name":"gui"},{"id":91,"name":"http"},{"id":5,"name":"http-client"},{"id":51,"name":"iac"},{"id":30,"name":"ide"},{"id":78,"name":"iot"},{"id":40,"name":"json"},{"id":83,"name":"julian"},{"id":38,"name":"k8s"},{"id":31,"name":"language"},{"id":10,"name":"learning-resource"},{"id":33,"name":"lib"},{"id":41,"name":"linter"},{"id":28,"name":"lms"},{"id":16,"name":"logging"},{"id":76,"name":"low-code"},{"id":90,"name":"message-queue"},{"id":42,"name":"mobile-app"},{"id":18,"name":"monitoring"},{"id":36,"name":"networking"},{"id":7,"name":"node-version"},{"id":55,"name":"nosql"},{"id":57,"name":"observability"},{"id":46,"name":"orm"},{"id":52,"name":"os"},{"id":14,"name":"parser"},{"id":74,"name":"react"},{"id":82,"name":"real-time"},{"id":56,"name":"robot"},{"id":65,"name":"runtime"},{"id":32,"name":"sdk"},{"id":71,"name":"search"},{"id":63,"name":"secrets"},{"id":25,"name":"security"},{"id":85,"name":"server"},{"id":86,"name":"serverless"},{"id":70,"name":"storage"},{"id":75,"name":"system-design"},{"id":79,"name":"terminal"},{"id":29,"name":"testing"},{"id":12,"name":"ui"},{"id":50,"name":"ux"},{"id":88,"name":"video"},{"id":20,"name":"web-app"},{"id":35,"name":"web-server"},{"id":43,"name":"webassembly"},{"id":69,"name":"workflow"},{"id":87,"name":"yaml"}]" returns me the "expected json"