Pengumuman: Semua project nonkomersial yang terdaftar untuk menggunakan Earth Engine sebelum
15 April 2025 harus
memverifikasi kelayakan nonkomersial untuk mempertahankan akses Earth Engine.
REST Resource: projects.locations.videoThumbnails
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Resource: VideoThumbnail
Informasi tentang thumbnail video.
| Kolom |
name |
string
Nama resource yang mewakili thumbnail video, dalam bentuk "projects/*/videoThumbnails/**" (misalnya, "projects/earthengine-legacy/videoThumbnails/").
|
expression |
object (Expression)
Ekspresi yang akan dihitung. Harus dievaluasi ke ImageCollection.
|
videoOptions |
object (VideoOptions)
Opsi untuk animasi.
|
fileFormat |
enum (VideoFileFormat)
Encoding output tempat thumbnail video yang dihasilkan. Saat ini, hanya GIF yang didukung.
|
grid |
object (PixelGrid)
Petak piksel opsional yang menjelaskan cara gambar yang dihitung oleh expression diproyeksikan ulang dan dipangkas.
|
VideoOptions
Opsi dasar untuk membuat video.
| Representasi JSON |
{
"framesPerSecond": number,
"maxFrames": integer,
"maxPixelsPerFrame": string
} |
| Kolom |
framesPerSecond |
number
Kecepatan frame video yang diekspor. Harus berupa nilai antara 0,1 dan 120. Default-nya adalah 5,0.
|
maxFrames |
integer
Jumlah maksimum frame video yang akan dihitung dan diekspor. Ini adalah pengaman untuk mencegah Anda memulai ekspor yang lebih besar dari yang Anda inginkan secara tidak sengaja. Nilai defaultnya adalah 1.000 frame, tetapi Anda dapat menetapkan nilai secara eksplisit untuk menaikkan atau menurunkan batas ini.
|
maxPixelsPerFrame |
string (Int64Value format)
Jumlah maksimum piksel yang akan dihitung dan diekspor per frame. Ini adalah pengaman untuk mencegah Anda memulai ekspor yang lebih besar dari yang Anda inginkan secara tidak sengaja. Nilai defaultnya adalah 1e8 piksel, tetapi Anda dapat menetapkan nilai secara eksplisit untuk menaikkan atau menurunkan batas ini.
|
Metode |
|
|
Membuat ID yang dapat digunakan untuk merender gambar yang berisi animasi beberapa gambar dari koleksi. |
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-25 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-25 UTC."],[[["\u003cp\u003eVideoThumbnail is a resource that allows you to create an animation from an ImageCollection in Earth Engine.\u003c/p\u003e\n"],["\u003cp\u003eIt uses an \u003ccode\u003eexpression\u003c/code\u003e to define the ImageCollection, \u003ccode\u003evideoOptions\u003c/code\u003e for animation settings like frame rate and maximum frames, and \u003ccode\u003efileFormat\u003c/code\u003e to specify the output format (GIF, MP4, or VP9).\u003c/p\u003e\n"],["\u003cp\u003eYou can optionally define a \u003ccode\u003egrid\u003c/code\u003e for reprojection and clipping of the images within the animation.\u003c/p\u003e\n"],["\u003cp\u003eSafety guards like \u003ccode\u003emaxFrames\u003c/code\u003e and \u003ccode\u003emaxPixelsPerFrame\u003c/code\u003e prevent unintentionally large exports by limiting the number of frames and pixels.\u003c/p\u003e\n"]]],["This documentation details creating video thumbnails from image collections. Key information includes: `name` (resource identifier), `expression` (image collection source), `videoOptions` (animation settings), `fileFormat` (output format, GIF currently supported), and `grid` (image reprojection/clipping). `VideoOptions` specify `framesPerSecond`, `maxFrames`, and `maxPixelsPerFrame` to control animation quality and size. Supported video formats are MP4, GIF, and VP9. The `create` method generates an ID to render the video.\n"],null,["# REST Resource: projects.locations.videoThumbnails\n\nResource: VideoThumbnail\n------------------------\n\nInformation about a video thumbnail.\n\n| JSON representation |\n|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ``` { \"name\": string, \"expression\": { object (/earth-engine/reference/rest/v1/Expression) }, \"videoOptions\": { object (/earth-engine/reference/rest/v1/projects.locations.videoThumbnails#VideoThumbnail.VideoOptions) }, \"fileFormat\": enum (/earth-engine/reference/rest/v1/projects.locations.videoThumbnails#VideoThumbnail.VideoFileFormat), \"grid\": { object (/earth-engine/reference/rest/v1/PixelGrid) } } ``` |\n\n| Fields ||\n|----------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `name` | `string` The resource name representing the video thumbnail, of the form \"projects/\\*/videoThumbnails/\\*\\*\" (e.g. \"projects/earthengine-legacy/videoThumbnails/\"). |\n| `expression` | `object (`[Expression](/earth-engine/reference/rest/v1/Expression)`)` The expression to compute. Must evaluate to an ImageCollection. |\n| `videoOptions` | `object (`[VideoOptions](/earth-engine/reference/rest/v1/projects.locations.videoThumbnails#VideoThumbnail.VideoOptions)`)` Options for the animation. |\n| `fileFormat` | `enum (`[VideoFileFormat](/earth-engine/reference/rest/v1/projects.locations.videoThumbnails#VideoThumbnail.VideoFileFormat)`)` The output encoding in which to generate the resulting video thumbnail. Currently only GIF is supported. |\n| `grid` | `object (`[PixelGrid](/earth-engine/reference/rest/v1/PixelGrid)`)` An optional pixel grid describing how the images computed by `expression` are reprojected and clipped. |\n\n### VideoOptions\n\nBasic options for generating videos.\n\n| JSON representation |\n|------------------------------------------------------------------------------------------|\n| ``` { \"framesPerSecond\": number, \"maxFrames\": integer, \"maxPixelsPerFrame\": string } ``` |\n\n| Fields ||\n|---------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `framesPerSecond` | `number` The frame rate of the exported video. Must be a value between 0.1 and 120. Defaults to 5.0. |\n| `maxFrames` | `integer` The maximum number of video frames to compute and export. This is a safety guard to prevent you from accidentally starting a larger export than you had intended. The default value is 1000 frames, but you can set the value explicitly to raise or lower this limit. |\n| `maxPixelsPerFrame` | `string (`[Int64Value](https://developers.google.com/discovery/v1/type-format)` format)` The maximum number of pixels to compute and export per frame. This is a safety guard to prevent you from accidentally starting a larger export than you had intended. The default value is 1e8 pixels, but you can set the value explicitly to raise or lower this limit. |\n\n### VideoFileFormat\n\nSelects a video file format in which to encode a sequence of images.\n\n| Enums ||\n|---------------------------------|------------------------|\n| `VIDEO_FILE_FORMAT_UNSPECIFIED` | Unspecified. |\n| `MP4` | MPEG-4 Part 14 format. |\n| `GIF` | Animated GIF. |\n| `VP9` | WEBM/VP9 |\n\n| Methods ------- ||\n|-----------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------|\n| ### [create](/earth-engine/reference/rest/v1/projects.locations.videoThumbnails/create) | Creates an ID that can be used to render an image containing an animation of multiple images from a collection. |"]]
