The iPhone Video preset generates H.264 1080p video with AAC audio at 192 kbps, tailored for the iPhone's OLED display and A-series hardware decoder. ASF files carrying WMV content cannot be played by the iPhone's native video apps. This conversion produces an MP4 file that leverages the iPhone's hardware video pipeline for smooth, battery-efficient playback at a resolution that matches the phone's screen.

iPhones do not include Windows Media codecs. While VLC for iOS can decode ASF files via software, this bypasses the hardware decoder, causing higher CPU usage, faster battery drain, and potential frame drops on complex content. Converting to the iPhone preset enables native playback through the Photos, TV, or Files app with full system integration — AirPlay, SharePlay, Lock Screen controls, and Picture-in-Picture.

The preset uses H.264 High Profile Level 4.0 at up to 1920x1080 resolution with a target bitrate of 4-6 Mbps. Audio is encoded as AAC-LC at 192 kbps stereo. The output is an MP4 container with the moov atom at the file start for instant playback. The encoder uses reference frames and B-frames appropriate for the iPhone's hardware decoder capabilities.

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Resolution: 1280x720

Bitrate: 4 Mbps

8MB free, 50MB Nitro

Yes. H.264 High Profile 1080p has been supported since iPhone 5 (2012). All iPhones currently in use handle this preset with hardware acceleration.

Yes. MP4/H.264 files are recognized by Photos and can be organized in albums, shared via iMessage, and synced across iCloud.

Yes. H.264 MP4 files AirPlay flawlessly to Apple TV. The Apple TV's hardware decoder handles 1080p H.264 natively.

HEVC produces smaller files at the same quality but is only supported on iPhone 7 and later. H.264 provides broader compatibility across all iPhones.

At 4-6 Mbps, expect roughly 30-45 MB per minute of 1080p video. A 60-minute ASF recording converts to approximately 2-2.7 GB.

Device	ASF	iPhone Video
Windows PC	Partial	Partial
macOS	Partial	Partial
iPhone/iPad	Partial	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No	No

Egenskap	ASF	iPhone Video
Fullt navn	Advanced Systems Format	iPhone Compatible Video
Filendelse	.asf	.mp4
Best egnet for	Streaming optimized	iPhone optimized

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