FLV (Flash Video) was designed for desktop web browsers running the Flash Player plugin — it was never intended for mobile playback. Mobile Video conversion produces an MP4 file with conservative H.264 encoding (Baseline Profile, Level 3.0) and AAC-LC audio, targeting the broadest possible mobile device compatibility. This covers Android phones, iPhones, Windows phones, basic feature phones, and portable media players manufactured in the last decade.

Mobile devices have diverse hardware capabilities — from flagship smartphones to budget feature phones. A universally compatible mobile video format must use the lowest common denominator of codec profiles. FLV's Sorenson Spark and VP6 codecs are not supported by any mobile hardware decoder. Converting to Mobile Video ensures playback on any phone or tablet regardless of manufacturer, operating system, or age.

FFmpeg encodes to H.264 Baseline Profile Level 3.0 — the most widely supported mobile video profile. Maximum resolution is 720p (1280x720) at 30 fps to ensure smooth decoding on low-power processors. Audio is AAC-LC at 96-128 kbps mono or stereo. The output bitrate is typically 800-1500 kbps to balance quality and file size for mobile data. Faststart is enabled for progressive download playback.

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

Mobile Video uses H.264 Baseline Profile with conservative resolution and bitrate settings, ensuring compatibility with even the oldest and cheapest mobile devices. Regular MP4 might use High Profile or H.265, which older phones cannot decode.

Yes. H.264 Baseline Profile MP4 is supported by every iPhone ever made and every Android phone running Android 3.0+ (2011). It is the universal mobile video format.

720p (1280x720) is optimal for most mobile screens. 480p is fine for phones with screens under 5 inches or for minimizing data usage. 1080p is overkill for most mobile viewing but appropriate for large tablets.

At typical mobile settings (720p, 1 Mbps), one minute of video uses approximately 7.5 MB. A 30-minute episode would be about 225 MB. At 480p with 500 kbps, the same content would be roughly 112 MB.

Yes. Both WhatsApp (16 MB limit for inline video, 64 MB as document) and Telegram (2 GB limit) accept H.264 MP4. The mobile-optimized settings produce compact files well within these limits.

Basic feature phones typically support 3GP rather than MP4. If you need feature phone compatibility, convert to 3GP instead. Mobile Video targets smartphones and tablets from the last decade.

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

Caracteristică	FLV	Mobile Video
Nume complet	Flash Video	Mobile Device Video
Extensie	.flv	.mp4
Cel mai potrivit pentru	Small file size	Universal mobile

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