What is VOB?

DVD Video Object (VOB) is the container format for DVD-Video discs, containing MPEG-2 video, audio, and subtitles.

What is 3G2?

3GPP2 (3G2) is a multimedia container format developed for CDMA mobile networks, supporting video and audio streaming.

When Should You Use VOB vs 3G2?

VOB vs 3G2: Key Differences

• •VOB and 3G2 diverge on compression: lossy compression for the source, lossy compression for the target.
• •Both formats share lossy compression, so quality behavior is similar across the two — file size differences come from algorithm efficiency rather than compression philosophy.
• •Alpha channel support: 3G2 lacks transparency support.
• •VOB files are typically 1-2GB per hour of DVD video while 3G2 files range Small, optimized for mobile
• •VOB is optimized for dvd movies, legacy video archives while 3G2 is designed for legacy mobile video, mms messages — choose based on your specific workflow needs

Advantages of VOB

• ✓VOB applies lossy compression specifically calibrated for DVD movies, legacy video archives.
• ✓VOB enjoys broad native support across operating systems, browsers, and creative tools alike.
• ✓VOB delivers impressive compression ratios, shrinking files dramatically while keeping visual quality high.
• ✓You will find VOB support built into virtually every tool that handles DVD movies, legacy video archives — no plugins or converters needed.

Advantages of 3G2

• ✓3G2 compresses data using lossy methods, keeping file sizes manageable for Legacy mobile video, MMS messages.
• ✓Industry-wide support means 3G2 files open anywhere — from legacy systems to the latest devices.
• ✓Small file sizes make 3G2 ideal for email, web uploads, and cloud storage.
• ✓From professional software to open-source alternatives, 3G2 works out of the box.

Common Use Cases for VOB to 3G2 Conversion

• Video archiving
• Broadcast production
• Video game cutscenes
• Product demonstrations
• Webinar recordings
• Animated explainers

Industry Applications

Best Practices for VOB to 3G2 Conversion

• →For VOB to 3G2: encode at the target platform's native resolution — upscaling or downscaling adds unnecessary artifacts
• →Test a short clip before converting the entire VOB file — this confirms 3G2 settings produce acceptable quality
• →3G2 is widely supported but choose bitrate carefully to balance quality and file size
• →Use constant bitrate (CBR) for streaming delivery and variable bitrate (VBR) for archival storage
• →Keep the original file in case you need to re-encode with different settings
• →Check audio sync after conversion — container changes can sometimes cause drift

Related Article

Troubleshooting VOB to 3G2 Conversion

• !3G2 won't play on target device → check codec compatibility (H.264 has broadest support)
• !Audio out of sync after VOB to 3G2 conversion → try re-muxing with a different container format
• !3G2 quality is too low → increase the bitrate; for 1080p video, 8-15 Mbps is recommended
• !File size increased converting VOB to 3G2 → lossless or higher-bitrate outputs naturally produce larger files

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