
HandBrake
Shutter Encoder
Format Factory
Freemake Video Converter
File Converter
Avidemux
VidCoder
Open source multimedia suite for conversion, playback, profiling, and streaming.

Substack
Formo.so
Advanced analytics for Substack writers. Runs 100% locally, no cloud, no subscription. Discover your superfans, churn risk, and cohort retention.
Which is more popular?
Based on our record, FFmpeg should be more popular than StackStats.app. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | ffmpeg.org | stackstats.app |
| Pricing | — | |
| Company | — | Startup from the United Arab Emirates · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of FFmpeg yet.
StackStats is a local desktop app for serious Substack writers. Import your CSV exports and get analytics Substack doesn't show you: bot-filtered open rates, cohort retention, dead subscriber detection, superfan ID, content-to-growth correlation, and an optional AI layer (supports Ollama,...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How to use FFMPEG
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FFmpeg and StackStats.app.
StackStats.app's answer:
I built StackStats because Substack's native analytics weren't cutting it. I wanted cohort data, real open rates (not bot-inflated), and a way to identify which posts were actually driving subscriber growth — but every tool I found was either cloud-based or required migrating off Substack entirely. So I built a local app that works with Substack's own CSV exports. No migration, no cloud, no subscription.
StackStats.app's answer:
StackStats runs 100% locally on your machine — your subscriber data never touches a server. It also goes far beyond what Substack shows natively: bot-filtered open rates, cohort retention, superfan identification, dead subscriber detection, and content-to-growth correlation. No subscription, no account, no cloud. Pay once, own it forever.
StackStats.app's answer:
Most newsletter analytics tools are cloud-based SaaS with monthly subscriptions. StackStats is a one-time purchase that runs entirely on your device. For Substack writers who care about privacy — especially those with paid subscribers — that's a meaningful difference. You also get analytics features that don't exist anywhere else, like bot-filtered open rates and cohort retention, without having to migrate away from Substack.
StackStats.app's answer:
Serious Substack writers who are frustrated by Substack's shallow native analytics and want real data to drive growth — without moving their subscriber data to the cloud.
StackStats.app's answer:
Electron (macOS + Windows), HTML/CSS/JavaScript, Chart.js, PapaParse. Optional AI layer supports Ollama, Claude, GPT-4, Gemini, Groq, and OpenRouter. Licensing via Cloudflare Workers + D1. Payments via Gumroad.
Share your experience with using FFmpeg and StackStats.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


FFmpeg is the best free video converter software for advanced users or engineers who know a command-line environment. It doesn't come with the GUI. So you can't convert videos by simple clicks as what you're doing...
If you’re not comfortable with using a command line to operate your software, then you may want to stop reading right now. FFmpeg is incredibly powerful, available for all major platforms, and best of all, it’s free –...
FFmpeg is an open source project that develops libraries and programs for handling multimedia data. FFmpeg is the home to libavcodec, a codec library used by a large spectrum of programs, and libavformat, a mux and...
We have no reviews of StackStats.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


With over 100 codecs supported, that same seven-stop pipeline is how ffmpeg decodes, encodes, transcodes, filters, and plays basically any multimedia file that exists. Source: ffmpeg.org/about.html. - Source: dev.to / about 2 months ago
The combination of Node.js and FFmpeg represents the most flexible and customizable approach to video streaming. This setup gives you complete control over the video streaming process. - Source: dev.to / over 1 year ago
The fact that Handbrake doesn't expose the same features as the ffmpeg CLI tool is frankly irrelevant. It's not just relevant, it's the whole thing. They asked for an ffmpeg GUI and someone recommended a GUI that doesn't use... - Source: Hacker News / over 2 years ago
I'm working on 3 products now: 1. FormBeep(https://formbeep.com) at $38 MRR now - A form to Whatsapp tool. Stack is mainly CF workers with Clerk Auth. 2. SlashLink(https://slashlink.app) $0 - A simple pay as you go amazon link localizer.... - Source: Hacker News / 3 days ago
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HandBrake allows users to easily convert video files into a wide variety of different formats.
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With Substack, anyone can start a publication that combines a personal website, blog, and email newsletter or podcast. It's quick and simple.
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Open source software without any restriction - converter all formats video|audio|image professionnals codecs and standards - swiss knife tool Windows, OSX and Linux
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Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
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Freemake Video Converter Converts 500+ Formats & Gadgets FREE! Convert to MP4, AVI, MKV, WMV, DVD, Xvid. FREE Download. **Voted Best of 2018** Comes with FREE…
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