phronmophobic / clj-media Goto Github PK

I think there's still a few transformation steps that still rely on insert-last like transcoding video.

For whatever reason, allocing a bunch of frames, then freeing them in bulk has much worse memory usage than freeing frames as you go. Setting things up so frames can be 1) reused and 2) freed as you go is probably the better design anyways.

I just want to try out clj-media to probe the aspect ratio of input videos. However, I am getting an error when I try to use it.

I use leiningen. In :dependencies in my project.clj:

;;;;;; everything else
[com.phronemophobic/clj-media "2.3"]

attempting use in an ns:

(ns test.ns
  (:require
   [com.phronemophobic.clj-media :as cljm]
  ) ;; attempting to evaluate the ns statement:
  ;; => namespace 'com.phronemophobic.clj-media.impl.raw' not found

I have checked the maven repository and verified that the downloaded jar DOES include the impl.raw ns, so perhaps the error is not what it says it is. fwiw, I do have ffmpeg installed on my system and can use it from the CLI. Why can't I use clj-media?

edit: I restarted my system repl and found a more instructive error:

Syntax error (UnsatisfiedLinkError) compiling at (com/phronemophobic/clj_media/impl/raw.clj:61:1).
~/.javacpp/cache/ffmpeg-6.0-1.5.9-linux-x86_64.jar/org/bytedeco/ffmpeg/linux-x86_64/libjniavdevice.so: libxcb.so.1: cannot open shared object file: No such file or directory

it looks like a system error of some kind. I see I am not alone with similar errors: https://stackoverflow.com/questions/72554450/aws-ec2-linux-cannot-open-shared-object-file

The solution is to make a bunch of system upgrades, which are apparently needed so that the latest xcb version is viable. For clj-media, I guess the docs should mention that a recent libxcb library is needed so that the C-linker has what it needs when Clong does its thing.

I'm trying to update things so that it works. I'm leaving this message here so that others might find it when necessary.