在 PHP 中將 PowerPoint 簡報轉換為影片
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簡介
透過將 PowerPoint 簡報轉換為影片，您將獲得
- 可及性提升：相較於開啟簡報的應用程式，所有裝置（不論平台）皆預設配備影片播放器，使用者更容易開啟或播放影片。
- 更廣的觸及範圍：透過影片，您可以觸及大量觀眾，並以資訊針對他們，這些資訊在簡報中可能顯得冗長。大多數調查與統計顯示，觀看與消費影片的人數超過其他形式的內容，且普遍較偏好此類內容。
您可能想要查看我們的PowerPoint 轉影片線上轉換器，因為它是此處所描述流程的即時且有效的實作。
Aspose.Slides 中的 PowerPoint 轉影片轉換
Aspose.Slides 支援簡報轉影片的轉換。
- 使用 Aspose.Slides 產生一組畫格（來自簡報投影片），其對應特定的 FPS（每秒畫格數）
- 使用第三方工具，如 ffmpeg（for java），根據畫格建立影片。
將 PowerPoint 轉換為影片
- 將以下內容加入您的 POM 檔案：
<dependency>
<groupId>net.bramp.ffmpeg</groupId>
<artifactId>ffmpeg</artifactId>
<version>0.7.0</version>
</dependency>
```php
-
Download ffmpeg here.
-
Run the PowerPoint to video PHP code.
This PHP code shows you how to convert a presentation (containing a figure and two animation effects) to a video:
$presentation = new Presentation();
try {
# 新增笑臉形狀並對其進行動畫
$smile = $presentation->getSlides()->get_Item(0)->getShapes()->addAutoShape(ShapeType::SmileyFace, 110, 20, 500, 500);
$mainSequence = $presentation->getSlides()->get_Item(0)->getTimeline()->getMainSequence();
$effectIn = $mainSequence->addEffect($smile, EffectType::Fly, EffectSubType::TopLeft, EffectTriggerType::AfterPrevious);
$effectOut = $mainSequence->addEffect($smile, EffectType::Fly, EffectSubType::BottomRight, EffectTriggerType::AfterPrevious);
$effectIn->getTiming()->setDuration(2.0);
$effectOut->setPresetClassType(EffectPresetClassType::Exit);
$fps = 33;
class FrameTick {
function invoke($sender, $arg) {
try {
$frame = sprintf("frame_%04d.png", $sender->getFrameIndex());
$arguments->getFrame()->save($frame, ImageFormat::Png);
$frames->add($frame);
} catch (JavaException $e) {
}
}
}
$frames = new Java("java.util.ArrayList");
$animationsGenerator = new PresentationAnimationsGenerator($presentation);
try {
$player = new PresentationPlayer($animationsGenerator, $fps);
try {
$frameTick = java_closure(new FrameTick(), null, java("com.aspose.slides.PresentationPlayerFrameTick"));
$player->setFrameTick($frameTick);
$animationsGenerator->run($presentation->getSlides());
} finally {
if (!java_is_null($player)) {
$player->dispose();
}
}
} finally {
if (!java_is_null($animationsGenerator)) {
$animationsGenerator->dispose();
}
}
# Configure ffmpeg binaries folder. See this page: https://github.com/rosenbjerg/FFMpegCore#installation
$ffmpeg = new Java("net.bramp.ffmpeg.builder.FFmpeg", "path/to/ffmpeg");
$ffprobe = new Java("net.bramp.ffmpeg.builder.FFprobe", "path/to/ffprobe");
$builder = (new Java("net.bramp.ffmpeg.builder.FFmpegBuilder"))->addExtraArgs("-start_number", "1")->setInput("frame_%04d.png")->addOutput("output.avi")->setVideoFrameRate(FFmpeg->FPS_24)->setFormat("avi")->done();
$executor = new Java("net.bramp.ffmpeg.builder.FFmpegExecutor", $ffmpeg, $ffprobe);
$executor->createJob($builder)->run();
} catch (JavaException $e) {
$e->printStackTrace();
}
Video Effects
You can apply animations to objects on slides and use transitions between slides.
Animations and transitions make slideshows more engaging and interesting—and they do the same thing for videos. Let’s add another slide and transition to the code for the previous presentation:
# 新增笑臉形狀並對其進行動畫
# ...
# 新增投影片與動畫過場效果
$newSlide = $presentation->getSlides()->addEmptySlide($presentation->getSlides()->get_Item(0)->getLayoutSlide());
$newSlide->getBackground()->setType(BackgroundType::OwnBackground);
$newSlide->getBackground()->getFillFormat()->setFillType(FillType::Solid);
$newSlide->getBackground()->getFillFormat()->getSolidFillColor()->setColor(java("java.awt.Color")->MAGENTA);
$newSlide->getSlideShowTransition()->setType(TransitionType::Push);
Aspose.Slides also supports animation for texts. So we animate paragraphs on objects, which will appear one after the other (with the delay set to a second):
$presentation = new Presentation();
try {
# 新增文字與動畫
$autoShape = $presentation->getSlides()->get_Item(0)->getShapes()->addAutoShape(ShapeType::Rectangle, 210, 120, 300, 300);
$para1 = new Paragraph();
$para1->getPortions()->add(new Portion("Aspose Slides for Java"));
$para2 = new Paragraph();
$para2->getPortions()->add(new Portion("convert PowerPoint Presentation with text to video"));
$para3 = new Paragraph();
$para3->getPortions()->add(new Portion("paragraph by paragraph"));
$paragraphCollection = $autoShape->getTextFrame()->getParagraphs();
$paragraphCollection->add($para1);
$paragraphCollection->add($para2);
$paragraphCollection->add($para3);
$paragraphCollection->add(new Paragraph());
$mainSequence = $presentation->getSlides()->get_Item(0)->getTimeline()->getMainSequence();
$effect1 = $mainSequence->addEffect($para1, EffectType::Appear, EffectSubType::None, EffectTriggerType::AfterPrevious);
$effect2 = $mainSequence->addEffect($para2, EffectType::Appear, EffectSubType::None, EffectTriggerType::AfterPrevious);
$effect3 = $mainSequence->addEffect($para3, EffectType::Appear, EffectSubType::None, EffectTriggerType::AfterPrevious);
$effect4 = $mainSequence->addEffect($para3, EffectType::Appear, EffectSubType::None, EffectTriggerType::AfterPrevious);
$effect1->getTiming()->setTriggerDelayTime(1.0);
$effect2->getTiming()->setTriggerDelayTime(1.0);
$effect3->getTiming()->setTriggerDelayTime(1.0);
$effect4->getTiming()->setTriggerDelayTime(1.0);
$fps = 33;
class FrameTick {
function invoke($sender, $arg) {
try {
$frame = sprintf("frame_%04d.png", $sender->getFrameIndex());
$arguments->getFrame()->save($frame, ImageFormat::Png);
$frames->add($frame);
} catch (JavaException $e) {
}
}
}
$frames = new Java("java.util.ArrayList");
$animationsGenerator = new PresentationAnimationsGenerator($presentation);
try {
$player = new PresentationPlayer($animationsGenerator, $fps);
try {
$frameTick = java_closure(new FrameTick(), null, java("com.aspose.slides.PresentationPlayerFrameTick"));
$player->setFrameTick($frameTick);
$animationsGenerator->run($presentation->getSlides());
} finally {
if (!java_is_null($player)) {
$player->dispose();
}
}
} finally {
if (!java_is_null($animationsGenerator)) {
$animationsGenerator->dispose();
}
}
# Configure ffmpeg binaries folder. See this page: https://github.com/rosenbjerg/FFMpegCore#installation
$ffmpeg = new Java("net.bramp.ffmpeg.builder.FFmpeg", "path/to/ffmpeg");
$ffprobe = new Java("net.bramp.ffmpeg.builder.FFprobe", "path/to/ffprobe");
$builder = (new Java("net.bramp.ffmpeg.builder.FFmpegBuilder"))->addExtraArgs("-start_number", "1")->setInput("frame_%04d.png")->addOutput("output.avi")->setVideoFrameRate(FFmpeg->FPS_24)->setFormat("avi")->done();
$executor = new Java("net.bramp.ffmpeg.builder.FFmpegExecutor", $ffmpeg, $ffprobe);
$executor->createJob($builder)->run();
} catch (JavaException $e) {
$e->printStackTrace();
}
Video Conversion Classes
To allow you to perform PowerPoint to video conversion tasks, Aspose.Slides provides the PresentationAnimationsGenerator and PresentationPlayer classes.
PresentationAnimationsGenerator allows you to set the frame size for the video (that will be created later) through its constructor. If you pass an instance of the presentation, Presentation::getSlideSize will be used and it generates animations that PresentationPlayer uses.
When animations are generated, a NewAnimation event is generated for each subsequent animation, which has the presentation animation player parameter. The latter is a class that represents a player for a separate animation.
To work with the presentation animation player, the getDuration (the full duration of the animation) and setTimePosition methods are used. Each animation position is set within the 0 to duration range, and then the getFrame method will return a BufferedImage that corresponds to the animation state at that moment:
use aspose\slides\Presentation;
use aspose\slides\PresentationPlayer;
use aspose\slides\PresentationAnimationsGenerator;
use aspose\slides\ImageFormat;
use aspose\slides\ShapeType;
use aspose\slides\EffectType;
use aspose\slides\EffectSubtype;
use aspose\slides\EffectTriggerType;
use aspose\slides\EffectPresetClassType;
class PresentationAnimationPlayer {
function invoke($animationPlayer) {
echo(sprintf("Animation total duration: %f", $animationPlayer->getDuration()));
$animationPlayer->setTimePosition(0);// initial animation state
try {
# initial animation state bitmap
$animationPlayer->getFrame()->save("firstFrame.png", ImageFormat::Png);
} catch (JavaException $e) {
}
$animationPlayer->setTimePosition($animationPlayer->getDuration());// final state of the animation
try {
# last frame of the animation
$animationPlayer->getFrame()->save("lastFrame.png", ImageFormat::Png);
} catch (JavaException $e) {
}
}
}
$presentation = new Presentation();
try {
# 新增笑臉形狀並對其進行動畫
$smile = $presentation->getSlides()->get_Item(0)->getShapes()->addAutoShape(ShapeType::SmileyFace, 110, 20, 500, 500);
$mainSequence = $presentation->getSlides()->get_Item(0)->getTimeline()->getMainSequence();
$effectIn = $mainSequence->addEffect($smile, EffectType::Fly, EffectSubtype::TopLeft, EffectTriggerType::AfterPrevious);
$effectOut = $mainSequence->addEffect($smile, EffectType::Fly, EffectSubtype::BottomRight, EffectTriggerType::AfterPrevious);
$effectIn->getTiming()->setDuration(2.0);
$effectOut->setPresetClassType(EffectPresetClassType::Exit);
$animationsGenerator = new PresentationAnimationsGenerator($presentation);
$presentationAnimation=java_closure(new PresentationAnimationPlayer(), null, java("com.aspose.slides.PresentationAnimationsGeneratorNewAnimation"));
try {
$animationsGenerator->setNewAnimation($presentationAnimation);
} finally {
if (!java_is_null($animationsGenerator)) {
$animationsGenerator->dispose();
}
}
} finally {
if (!java_is_null($presentation)) {
$presentation->dispose();
}
}
To make all animations in a presentation play at once, the PresentationPlayer class is used. This class takes a PresentationAnimationsGenerator instance and FPS for effects in its constructor and then calls the FrameTick event for all the animations to get them played:
class FrameTick {
function invoke($sender, $arg) {
try {
$arguments->getFrame()->save("frame_" . $sender->getFrameIndex() . ".png", ImageFormat::Png);
} catch (JavaException $e) {
}
}
}
$presentation = new Presentation("animated.pptx");
try {
$animationsGenerator = new PresentationAnimationsGenerator($presentation);
try {
$player = new PresentationPlayer($animationsGenerator, 33);
try {
$frameTick = java_closure(new FrameTick(), null, java("com.aspose.slides.PresentationPlayerFrameTick"));
$player->setFrameTick($frameTick);
$animationsGenerator->run($presentation->getSlides());
} finally {
if (!java_is_null($player)) {
$player->dispose();
}
}
} finally {
if (!java_is_null($animationsGenerator)) {
$animationsGenerator->dispose();
}
}
} finally {
if (!java_is_null($presentation)) {
$presentation->dispose();
}
}
然後產生的畫格可編譯成影片。請參閱[將 PowerPoint 轉換為影片](https://docs.aspose.com/slides/zh-hant/php-java/convert-powerpoint-to-video/#convert-powerpoint-to-video) 章節。
## **支援的動畫與效果**
**進入**：
| 動畫類型 | Aspose.Slides | PowerPoint |
|---|---|---|
| **Appear** |  |  |
| **Fade** |  |  |
| **Fly In** |  |  |
| **Float In** |  |  |
| **Split** |  |  |
| **Wipe** |  |  |
| **Shape** |  |  |
| **Wheel** |  |  |
| **Random Bars** |  |  |
| **Grow & Turn** |  |  |
| **Zoom** |  |  |
| **Swivel** |  |  |
| **Bounce** |  |  |
**強調**：
| 動畫類型 | Aspose.Slides | PowerPoint |
|---|---|---|
| **Pulse** |  |  |
| **Color Pulse** |  |  |
| **Teeter** |  |  |
| **Spin** |  |  |
| **Grow/Shrink** |  |  |
| **Desaturate** |  |  |
| **Darken** |  |  |
| **Lighten** |  |  |
| **Transparency** |  |  |
| **Object Color** |  |  |
| **Complementary Color** |  |  |
| **Line Color** |  |  |
| **Fill Color** |  |  |
**退出**：
| 動畫類型 | Aspose.Slides | PowerPoint |
|---|---|---|
| **Disappear** |  |  |
| **Fade** |  |  |
| **Fly Out** |  |  |
| **Float Out** |  |  |
| **Split** |  |  |
| **Wipe** |  |  |
| **Shape** |  |  |
| **Random Bars** |  |  |
| **Shrink & Turn** |  |  |
| **Zoom** |  |  |
| **Swivel** |  |  |
| **Bounce** |  |  |
**動作路徑**：
| 動畫類型 | Aspose.Slides | PowerPoint |
|---|---|---|
| **Lines** |  |  |
| **Arcs** |  |  |
| **Turns** |  |  |
| **Shapes** |  |  |
| **Loops** |  |  |
| **Custom Path** |  |  |
## **常見問題**
**是否可以轉換受密碼保護的簡報？**
是的，Aspose.Slides 支援處理[受密碼保護的簡報](/slides/zh-hant/php-java/password-protected-presentation/)。在處理此類檔案時，您需要提供正確的密碼，以便函式庫能存取簡報內容。
**Aspose.Slides 是否支援在雲端解決方案中使用？**
是的，Aspose.Slides 可以整合至雲端應用程式與服務。此函式庫設計於伺服器環境下運作，確保高效能與可擴充性，適合批次處理檔案。
**在轉換過程中，簡報是否有大小限制？**
Aspose.Slides 能處理實質上任意大小的簡報。然而，對於極大型檔案，可能需要額外的系統資源，有時建議先最佳化簡報以提升效能。