Best Video Format for Face Swap on Android

The filename extension is only one part of video compatibility. A file called MP4 is a container that can hold different video and audio codecs. Two MP4 files can therefore behave differently on the same Android phone.

The safest starting point

For FacePika, a standard MP4 file with H.264 video and AAC audio is the safest input to try first. Android devices commonly support this combination, and it matches the app's MP4/H.264 output path. This is a recommendation rather than a universal guarantee because hardware codec support varies by device.

What the FacePika client actually accepts

The Android media picker shows videos from the system media library instead of enforcing a small extension whitelist. FacePika reads the source MIME type and asks Android's MediaCodec system for a compatible decoder. A video can be visible in the gallery but still fail if its codec, profile, resolution, or color format is unsupported by the device.

Recommended preparation settings

• Container: MP4.
• Video codec: H.264/AVC.
• Audio codec: AAC when retaining audio matters.
• Resolution: 720p or 1080p for an initial test, depending on the phone.
• Orientation: Landscape or portrait are both usable when rotation metadata is valid.
• Clip length: Start short, then process a longer version after confirming quality.

How FacePika exports the result

The current Android pipeline exports H.264 video in an MP4 container. It targets 15 FPS and a 4 Mbps bitrate. It tries to retain the source width and height, then adjusts the dimensions to meet the phone's encoder alignment and maximum-size requirements. If encoder setup fails, the app can lower the bitrate and reduce the dimensions before retrying.

Why a high-resolution source can still be reduced

Android phones expose different hardware encoder capabilities. A device may decode a large source file but reject that same width, height, bitrate, or profile during encoding. FacePika adapts to the reported hardware range so it can favor a completed video over an export that fails entirely.

What to do when a video does not open

1. Convert the source to H.264 MP4 with AAC audio.
2. Try 720p if the source is 4K or unusually wide.
3. Remove damaged metadata by exporting the clip from a trusted editor.
4. Test a shorter segment to rule out storage or memory pressure.
5. Keep the original file until you have reviewed the generated result.

For the complete workflow, follow how to face swap a video on Android or open the FacePika video face swap app page.