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Show HN: LLMpeg

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Re: Show HN: LLMpeg

#31

Post by sdesol »

minimaxir wrote: post #8

The system prompt may be a bit too simple, especially when using gpt-4o-mini as the base LLM that doesn't adhere to prompts well. > You write ffmpeg commands based on the description from the user. You should only respond with a command line command for ffmpeg, never any additional text. All responses should be a single line without any line breaks. I recently tried to get Claude 3.5 Sonnet to solve an FFmpeg problem…

I asked your question across multiple LLMs and had them reviewed by multiple LLMs. DeepSeek Chat said Claude 3.5 Sonnet produced an invalid command. Here is my chat.

https://beta.gitsense.com/?chats=197c53ab-86e9-43d3-92dd-df8...

Scroll to the bottom on the left window to see that Claude acknowledges that the command that DeepSeek produced was accurate. In the right window, you'll find the conversation I had with DeepSeek chat about all the commands.

I then asked all the models again if the DeepSeek generated command was correct and they all said no. And when I asked them to compare all the "correct" commands, Sonnet and DeepSeek said Sonnet was the accurate one:

https://beta.gitsense.com//?chat=47183567-c1a6-4ad5-babb-9bb...

That command did not work but I got the impression that DeepSeek could probably get me a working solution, so after telling it the errors I keep getting, it got to a point where it could write a bash script for me to get 5 equally spaced frames.

I guess the long story short is, changing the prompt probably won't be enough and you will need to constantly shop around to see which LLM will most likely give the correct response based on the question you are asking.

Re: Show HN: LLMpeg

#33

Post by fastily »

PaulKeeble wrote: post #13

FFMpeg is one of those tools that is really quite hard to use. The sheer surface area of the possible commands and options is incredible and then there is so much arcane knowledge around the right settings. Its defaults aren't very good and lead to poor quality output in a lot of cases and you can get some really weird errors when you combine certain settings. Its an amazingly capable tool but its equipped with every…

ffmpeg has abysmal defaults. I've always been of the opinion that CLI utilities should have sane defaults useful to a majority of users. As someone who has used ffmpeg for well over a decade, I find it baffling that you have to pass so many arguments to get an even remotely usable result

Re: Show HN: LLMpeg

#34

Post by yreg »

mochajocha wrote: post #21
yreg wrote: post #6

FFmpeg is a tool that I now use purely with LLM help (and it is the only such tool for me). I do however want to read the explanation of what the AI-suggested command does and understand it instead of just YOLO running it like in this project. I have had the experience where GPT/LLAMA suggested parameters that would have produced unintended consequences and if I haven't read their explanation I would never know (resu…

[flagged]

If I have to find it in the manual myself then I don't need an LLM assistant to begin with.

Re: Show HN: LLMpeg

#35

Post by yreg »

fourthark wrote: post #16
yreg wrote: post #6

FFmpeg is a tool that I now use purely with LLM help (and it is the only such tool for me). I do however want to read the explanation of what the AI-suggested command does and understand it instead of just YOLO running it like in this project. I have had the experience where GPT/LLAMA suggested parameters that would have produced unintended consequences and if I haven't read their explanation I would never know (resu…

I always wonder what's the difference between LLMing shell commands and curl https://example.com | sh

The difference is in reviewing the output. And the LLM is not a conscious malicious actor.

Re: Show HN: LLMpeg

#37

Post by sitkack »

davmar wrote: post #9

i think this type of interaction is the future in lots of areas. i can imagine we replace API's completely with a single endpoint where you hit it up with a description of what you want back. like, hit up 'news.ycombinator.com/api' with "give me all the highest rated submissions over the past week about LLMs". a server side LLM translates that to SQL, executes the query, returns the results. this approach is broadly…

Do you envision the LLMs creating a protocol? Would the caller supply the schema for the response?

Re: Show HN: LLMpeg

#38

Post by Vampiero »

fastily wrote: post #33
PaulKeeble wrote: post #13

FFMpeg is one of those tools that is really quite hard to use. The sheer surface area of the possible commands and options is incredible and then there is so much arcane knowledge around the right settings. Its defaults aren't very good and lead to poor quality output in a lot of cases and you can get some really weird errors when you combine certain settings. Its an amazingly capable tool but its equipped with every…

ffmpeg has abysmal defaults. I've always been of the opinion that CLI utilities should have sane defaults useful to a majority of users. As someone who has used ffmpeg for well over a decade, I find it baffling that you have to pass so many arguments to get an even remotely usable result

it should really just have an interactive mode that supports batching. It would cover 99% of use cases.

I recommend everyone ITT to just use Handbrake (a GUI) unless they have extremely niche use cases. What's the point of using a LLM? You just need one person who knows ffmpeg better than you to write a GUI. And someone did. So use that.

If Handbrake doesn't solve your problem please just go to Stack Overflow. The LLM was trained there anyway, and your use case is not novel.

Re: Show HN: LLMpeg

#40

Post by varenc »

mochajocha wrote: post #21
yreg wrote: post #6

FFmpeg is a tool that I now use purely with LLM help (and it is the only such tool for me). I do however want to read the explanation of what the AI-suggested command does and understand it instead of just YOLO running it like in this project. I have had the experience where GPT/LLAMA suggested parameters that would have produced unintended consequences and if I haven't read their explanation I would never know (resu…

[flagged]

serious ffmpeg users know it's "man ffmpeg-all"
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