can not find the h264 encoder by avcodec_find_encoder

[kyrosle]

• main.rs

fn main() {
  unsafe {
    let ptr = ffmpeg_sys_next::avcodec_find_encoder(
      ffmpeg_sys_next::AVCodecID::AV_CODEC_ID_H264
    );
    assert!(!ptr.is_null())
  }
}

• Carog.toml

[package]
name = "setting_test"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
ffmpeg-sys-next = { path = "../", features = [ // this example writing inside the ffmpeg-sys-next repo
  "build",
  "build-license-gpl",
  "build-license-nonfree",
  "build-lib-x264"
] }

console out:

Caused by:
  process didn't exit successfully: `/Users/kyros/MyProject/libs/rust-ffmpeg-sys/target/debug/build/ffmpeg-sys-next-ee8dfd2e99237b2f/build-script-build` (exit status: 101)
  --- stdout
  cargo:rustc-link-search=native=/Users/kyros/MyProject/libs/rust-ffmpeg-sys/target/debug/build/ffmpeg-sys-next-d76d0e8e39f17cc2/out/dist/lib
  cargo:rustc-link-lib=static=avcodec
  cargo:rustc-link-lib=static=avdevice
  cargo:rustc-link-lib=static=avfilter
  cargo:rustc-link-lib=static=avformat
  cargo:rustc-link-lib=static=avutil
  cargo:rustc-link-lib=static=swresample
  cargo:rustc-link-lib=static=swscale
  configure: ERROR: x264 not found using pkg-config

  If you think configure made a mistake, make sure you are using the latest
  version from Git.  If the latest version fails, report the problem to the
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
  Include the log file "ffbuild/config.log" produced by configure as this will help
  solve the problem.


  --- stderr
  Cloning into 'ffmpeg-6.1'...
  thread 'main' panicked at build.rs:657:21:
  called `Result::unwrap()` on an `Err` value: Custom { kind: Other, error: "configure failed " }
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

rust version:

rustup 1.26.0 (5af9b9484 2023-04-05)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.75.0 (82e1608df 2023-12-21)`

platform:

• macos 14.3.1 23D60 arm64

[dmtrKovalenko]

you need to

1. install all the libraries requied for x264 including nasm checkout full list in ffmpeg compilation guide https://trac.ffmpeg.org/wiki/CompilationGuide/macOS:

brew install automake fdk-aac git lame libass libtool libvorbis libvpx \
opus sdl shtool texi2html theora wget x264 x265 xvid nasm

verify that pkg-config can resolve x264 by running:

pkg-config --libs x264
# -L/opt/homebrew/Cellar/x264/r3108/lib -lx264

2. You need to build it and in theory it should work but in practice it doesn't because of rust-ffmepg-sys not reading all the linker flags from the ffmpeg output file. I fixed it here fix: Missing extra libs linker flags #88