Works really well. It does say "100% local. Data never leaves your browser." but indeed, a icon that does not a cloud-upload would be clearer.
senshi001 13 hours ago [-]
Just a thought - is the text “Click to upload” with a cloud icon perhaps a bit misleading?
If it’s fully client side, then you are just opening a file in essence - no clouds in sight!
hdb2 11 hours ago [-]
Yeah, if the author sees this, it would be best to change this to "Click to Open". We can argue about the icon (I would say the floppy image), but seeing the word "upload" with a cloud icon 1000% means "send this up to the Internet."
pooploop64 13 hours ago [-]
I agree something like a folder or file icon would be more accurate.
shevy-java 12 hours ago [-]
I guess UI-wise some changes wouldn't be bad, but I am
just glad it works. I am currently converting an ancient
.mpg into a .mp4; I could do so via ffmpeg from the
commandline, but I always forget which options to use,
so a GUI kind of frees brain space here.
arpadav 10 hours ago [-]
this might be an extremely stupid question, but is this just a demo project of https://github.com/ffmpegwasm/ffmpeg.wasm? or is this bringing forth some other utility that im not seeing?
majorchord 12 hours ago [-]
vibe-coded, and the github repo does not even contain the sources, just a single 'server.js' that is only for the documentation
fastily 10 hours ago [-]
Yup the readme reeks of llm generated fluff. Lately I find myself getting more and more suspicious whenever I see lots of emojis in markdown headers..
rmast 10 hours ago [-]
It looks like most of the sources might be under the “docs” subfolder.
rvz 11 hours ago [-]
Just look at the descriptive commit messages. /s
Tells you that most here just read the headline and not the code or commits any-more and this will just become abandonware.
ale42 13 hours ago [-]
Nice interface at a first glance, for sure can be useful for users who would find using the actual thing too cumbersome. How does performance compare to the native app? Is any form of hardware decoding/encoding like h264_nvenc available? (I guess not?)
dtf 13 hours ago [-]
I would imagine the only way to use NVENC directly from a browser would be via WebCodecs.
jamal-kumar 13 hours ago [-]
Any chance those AVX-512 optimizations they released a while ago work within this? [1]
Note those only apply to scene_sad which is used for scene change detection and freeze detection and a few other things like mpdecimate -- it's a very specific use case
colek42 10 hours ago [-]
In 2016 I was working for an organization that wanted a video streaming web app, but could not tolerate any latency. In the past, we solved this with an NAPI extension in Firefox. They removed this for good security reasons, but it left our users without an option. They would have to move to an electron app. Distributing this app and updating it across 1000s of terminals worldwide was not something we were set up to do. I hacked together something like this and could not believe how well it worked. The initial POC is here: https://github.com/colek42/streamingDemo.
bxclltkfz 11 hours ago [-]
I love this, be interesting if this could make an in-browser video editor
mdswanson 11 hours ago [-]
I find it fascinating that we keep trying to build things that already exist, but on top of another app (web browser). I mean, it's cool to see, and it will have its use-cases, but I wonder where we'd be if we didn't have to do this.
zuzululu 12 hours ago [-]
this is ffmpeg running inside the browser am I correct? did not know this was possible. wonder what else we can run via webassembly
rmast 10 hours ago [-]
The things that are harder to get running in a browser via webassembly tend to have a GUI, network communication, or system calls that browsers don’t provide the APIs that are needed to support. But I’ve seen workarounds using websocket proxy servers to get around the lack of raw TCP or UDP socket access.
I’ve been surprised how easy it can be to get Python and C# code running in a browser.
theturtletalks 11 hours ago [-]
FFmpeg is so useful for TTS
shevy-java 12 hours ago [-]
Interesting idea - must have been a lot of work to add
all those features. I just tried it and it works locally
too, which is pretty epic.
Works really well. It does say "100% local. Data never leaves your browser." but indeed, a icon that does not a cloud-upload would be clearer.
If it’s fully client side, then you are just opening a file in essence - no clouds in sight!
Tells you that most here just read the headline and not the code or commits any-more and this will just become abandonware.
[1] https://www.phoronix.com/news/FFmpeg-July-2025-AVX-512
I’ve been surprised how easy it can be to get Python and C# code running in a browser.
> Objective metrics and tools for video encoding and source signal quality: netflix/vmaf, easyVmaf, psy-ex/metrics, ffmpeg-quality-metrics,
netflix/vmaf: https://GitHub.com/netflix/vmwaf
gdavila/easyVmaf: https://github.com/gdavila/easyVmaf
psy-ex/metrics: https://github.com/psy-ex/metrics/
slhck/ffmpeg-quality-metrics: Calculate quality metrics with FFmpeg (SSIM, PSNR, VMAF, VIF) https://github.com/slhck/ffmpeg-quality-metrics
Something like this would be great too:
The Ardour Manual > Loudness Analyzer and Normalizer: https://manual.ardour.org/mixing/basic-mixing/loudness-analy...