Převod prezentací PowerPoint na video v PHP
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Úvod
Převodem vaší prezentace PowerPoint na video získáte
- Zvýšení přístupnosti: Všechna zařízení (bez ohledu na platformu) jsou ve výchozím nastavení vybavena video přehrávači, na rozdíl od aplikací pro otevírání prezentací, takže uživatelům je snazší otevřít nebo přehrát videa.
- Větší dosah: Pomocí videí můžete oslovit široké publikum a cílit na něj s informacemi, které by v prezentaci mohly působit nudně. Většina průzkumů a statistik naznačuje, že lidé sledují a konzumují videa více než jiné formy obsahu a obecně upřednostňují právě takový obsah.
Možná budete chtít vyzkoušet náš PowerPoint to Video Online Converter, protože je to živá a efektivní implementace procesu popsaného zde.
Převod PowerPoint na video v Aspose.Slides
Aspose.Slides podporuje převod prezentace na video.
- Použijte Aspose.Slides k vygenerování sady snímků (z prezentace) odpovídajících určitému počtu FPS (snímků za sekundu)
- Použijte nástroj třetí strany, jako je ffmpeg (pro java), k vytvoření videa ze snímků.
Převod PowerPoint na video
- Přidejte toto do souboru POM:
<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 {
# Adds a smile shape and then animates it
$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:
# Adds a smile shape and animates it
# ...
# Adds a new slide and animated transition
$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 {
# Adds text and animations
$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 {
# Adds a smile shape and animates it
$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();
}
}
Poté lze vygenerované snímky zkompilovat do videa. Viz sekce [Convert PowerPoint to Video](https://docs.aspose.com/slides/cs/php-java/convert-powerpoint-to-video/#convert-powerpoint-to-video).
## **Podporované animace a efekty**
**Vstup**:
| Typ animace | Aspose.Slides | PowerPoint |
|---|---|---|
| **Appear** |  |  |
| **Fade** |  |  |
| **Fly In** |  |  |
| **Float In** |  |  |
| **Split** |  |  |
| **Wipe** |  |  |
| **Shape** |  |  |
| **Wheel** |  |  |
| **Random Bars** |  |  |
| **Grow & Turn** |  |  |
| **Zoom** |  |  |
| **Swivel** |  |  |
| **Bounce** |  |  |
**Zdůraznění**:
| Typ animace | Aspose.Slides | PowerPoint |
|---|---|---|
| **Pulse** |  |  |
| **Color Pulse** |  |  |
| **Teeter** |  |  |
| **Spin** |  |  |
| **Grow/Shrink** |  |  |
| **Desaturate** |  |  |
| **Darken** |  |  |
| **Lighten** |  |  |
| **Transparency** |  |  |
| **Object Color** |  |  |
| **Complementary Color** |  |  |
| **Line Color** |  |  |
| **Fill Color** |  |  |
**Odchod**:
| Typ animace | Aspose.Slides | PowerPoint |
|---|---|---|
| **Disappear** |  |  |
| **Fade** |  |  |
| **Fly Out** |  |  |
| **Float Out** |  |  |
| **Split** |  |  |
| **Wipe** |  |  |
| **Shape** |  |  |
| **Random Bars** |  |  |
| **Shrink & Turn** |  |  |
| **Zoom** |  |  |
| **Swivel** |  |  |
| **Bounce** |  |  |
**Cesty pohybu:**:
| Typ animace | Aspose.Slides | PowerPoint |
|---|---|---|
| **Lines** |  |  |
| **Arcs** |  |  |
| **Turns** |  |  |
| **Shapes** |  |  |
| **Loops** |  |  |
| **Custom Path** |  |  |
## **Často kladené otázky**
**Je možné převést prezentace chráněné heslem?**
Ano, Aspose.Slides umožňuje práci s [prezentacemi chráněnými heslem](/slides/cs/php-java/password-protected-presentation/). Při zpracování takových souborů je nutné zadat správné heslo, aby knihovna mohla získat přístup k obsahu prezentace.
**Podporuje Aspose.Slides použití v cloudových řešeních?**
Ano, Aspose.Slides lze integrovat do cloudových aplikací a služeb. Knihovna je navržena tak, aby fungovala v serverových prostředích, zajišťujíc vysoký výkon a škálovatelnost při zpracování souborů ve skupinách.
**Existují omezení velikosti prezentací při převodu?**
Aspose.Slides dokáže zpracovat prakticky jakoukoli velikost prezentace. Při práci s velmi velkými soubory však mohou být vyžadovány další systémové prostředky a někdy se doporučuje prezentaci optimalizovat pro zlepšení výkonu.