Exporting Videos

​

Export Formats

​

MP4 Video

• Default format: Generated automatically
• Resolution: 1080p (1920x1080)
• Audio: Synchronized voice narration
• Animations: Embedded animations
• Compatibility: Plays on all modern devices
• File size: 50-200 MB depending on length

​

PowerPoint (PPTX)

• Manual export: Generated from Slide Editor
• Format: Microsoft PowerPoint 2016+
• Content: Slides with text and images
• Animations: Converted to static images
• Editable: Full editing capability in PowerPoint
• File size: 10-30 MB depending on images

​

Downloading the MP4 Video

​

Exporting to PowerPoint

​

Video Format Details

​

Technical Specifications

• Codec: H.264
• Container: MP4
• Bitrate: Variable (optimized for quality)
• Frame rate: 60 fps for animations, 30 fps for static slides

• Codec: AAC
• Sample rate: 44.1 kHz
• Channels: Stereo
• Bitrate: 128 kbps

• Resolution: 1920x1080 (Full HD)
• Aspect ratio: 16:9
• Progressive scan

​

Compatibility

• Desktop: Windows Media Player, VLC, QuickTime
• Web browsers: Chrome, Firefox, Safari, Edge
• Mobile: iOS, Android native players
• Smart TVs: Most modern smart TV platforms
• Video platforms: YouTube, Vimeo, etc.

​

PowerPoint Format Details

​

Slide Layout

• Presentation topic as title
• Subtitle with generation details
• Themed background

• Slide title at top
• Content text in main area
• Images positioned left or right
• Animation preview images (if applicable)

• Consistent color scheme
• Professional fonts
• Slide numbers
• Background graphics

​

Editing Capabilities

• Edit all text content
• Replace or remove images
• Change theme and colors
• Add new slides
• Reorder slides
• Add PowerPoint animations
• Insert charts and tables
• Export to other formats

​

Animation Handling

• Multiple static images show animation stages
• Images are arranged sequentially
• Notes indicate original animation description
• Consider using PowerPoint’s built-in animations

​

File Management

​

Where Files Are Stored

• Generated videos: backend/outputs/videos/
• Animation renders: backend/outputs/manim/
• Manim code: backend/outputs/manim_code/
• Audio files: backend/outputs/audio/

• Browser downloads folder
• Configurable in browser settings
• Both MP4 and PPTX save here

​

Filename Conventions

{topic}_video.mp4

{topic}_presentation.pptx

• Spaces replaced with underscores
• Illegal filename characters removed
• Maximum length: 30 characters for topic portion

​

Sharing Your Presentation

​

Direct Sharing

• Email as attachment (if under size limit)
• Upload to cloud storage (Google Drive, Dropbox)
• Share via messaging apps
• Post on video platforms

• Email as attachment
• Share via OneDrive/Google Drive
• Present directly in PowerPoint
• Convert to PDF for viewing

​

Online Platforms

• YouTube: Upload for public or private viewing
• Vimeo: Professional video hosting
• Google Drive: Share with view/download links
• Microsoft Stream: Enterprise video platform

• SlideShare: Upload PowerPoint for web viewing
• Google Slides: Import and share PPTX
• Microsoft OneDrive: Cloud storage with preview

​

Embedding

<video width="640" height="360" controls>
  <source src="presentation.mp4" type="video/mp4">
</video>

<iframe width="560" height="315" 
  src="https://www.youtube.com/embed/VIDEO_ID" 
  frameborder="0" allowfullscreen>
</iframe>

​

File Size Optimization

​

Reducing Video Size

• Reduce slide count during generation
• Each slide adds 20-40 MB

• Animations increase file size
• Consider text-only slides
• Use static images instead

• Use video compression tools
• Reduce resolution to 720p
• Lower audio bitrate

​

Reducing PowerPoint Size

• PowerPoint: File > Compress Pictures
• Choose resolution appropriate for use
• Delete cropped areas

• Delete slides not needed
• Remove embedded videos
• Optimize image formats

• Smaller file size
• No editing capability
• Universal compatibility

​

Download Troubleshooting

• Check browser pop-up blocker
• Verify video file exists on server
• Check browser console for errors
• Try different browser
• Check disk space

• Slow connection may timeout
• Check file size matches expected
• Retry download
• Check for browser extensions interfering

• Verify backend server is running
• Check export API endpoint
• Review browser console errors
• Try exporting with fewer slides
• Check server logs

• Verify file downloaded completely
• Check file size is not 0 bytes
• Try different media player
• Check file format is .mp4
• Re-download if corrupted

​

Quality Considerations

​

Video Quality

• Animation complexity
• Image resolution in slides
• Audio recording quality
• Server rendering resources

• Use high-resolution images (1920x1080+)
• Write clear, well-structured slide content
• Choose appropriate voice tone/language
• Review animations before finalizing

​

PowerPoint Quality

• Image compression settings
• Font availability on target system
• Theme consistency
• Animation-to-static conversion

• Keep images uncompressed during edit
• Use standard fonts
• Review layout in PowerPoint
• Test on target presentation system

​

Best Practices

​

Advanced Export Options

​

Custom Video Formats

# Convert to WebM
ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 30 output.webm

# Convert to AVI
ffmpeg -i input.mp4 -c:v mpeg4 output.avi

# Extract audio only
ffmpeg -i input.mp4 -vn -acodec mp3 audio.mp3

​

PowerPoint to PDF

1. File > Export
2. Create PDF/XPS Document
3. Choose options
4. Publish

• Smallpdf.com
• ILovePDF.com
• Zamzar.com

​

Batch Processing

1. Generate multiple videos
2. Download each individually
3. Use scripts to process batch
4. Organize by topic/date

​

Technical Implementation

​

Download Implementation

const response = await fetch(videoUrl);
const blob = await response.blob();
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a');
a.href = url;
a.download = videoFilename;
document.body.appendChild(a);
a.click();
window.URL.revokeObjectURL(url);

​

PowerPoint Generation

from pptx import Presentation
from pptx.util import Inches, Pt

prs = Presentation()
prs.slide_width = Inches(10)
prs.slide_height = Inches(7.5)

# Add slides with content
# Apply theme
# Insert images
# Save file

​

Server API Endpoints

GET /api/video/{filename}

• Returns video file as binary stream
• Content-Type: video/mp4
• Supports range requests

POST /api/export/pptx

• Accepts slide data as JSON
• Generates PPTX file
• Returns file as download

​

Next Steps

• Create a new presentation
• Customize slide content
• Learn about animations