SSTV Encoder
SSTV Encoder is a free, open-source app for Android. Image encoder for Slow-Scan Television (SSTV) audio signals. It has 252 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid and Google Play.
github.com/olgamiller/SSTVEncoder2 (opens in a new tab)
Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error
About SSTV Encoder
Modes Supported SSTV modes: Martin Modes: Martin 1, Martin 2 PD Modes: PD 50, PD 90, PD 120, PD 160, PD 180, PD 240, PD 290 Robot Modes: Robot 36 Color, Robot 72 Color Scottie Modes: Scottie 1, Scottie 2, Scottie DX Wraase Modes: Wraase SC2 180 The mode specifications are taken from the Dayton Paper, JL Barber, "Proposal for SSTV Mode Specifications", 2000: Image To load an image: tap "Take Picture" or "Pick Picture" menu button, or use the Share option of an app like e.g. Gallery. To keep the aspect ratio, black borders will be added if necessary. Original image can be resend using another mode without reloading.
Privacy and F-Droid
F-Droid builds SSTV Encoder from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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Is SSTV Encoder free and open source?
Yes. SSTV Encoder's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install SSTV Encoder?
You can install SSTV Encoder from F-Droid (package om.sstvencoder) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: Version2.14).
Is SSTV Encoder still maintained?
The repository's most recent commit was on Aug 25, 2026. Its F-Droid listing was last updated on Aug 27, 2026. appsgit only lists apps whose repository had a commit in the last six months.