Failed to build metadata example

[syntheticsh]

I've tied to build example

And got

Compiling ffmpeg v0.2.0-alpha.2 (https://github.com/meh/rust-ffmpeg.git#dc6ace91)
error[E0425]: cannot find value `AVCOL_SPC_YCGCO` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:72:29
   |
72 |             Space::YCGCO => AVCOL_SPC_YCGCO,
   |                             ^^^^^^^^^^^^^^^ did you mean `AVCOL_SPC_YCOCG`?

error[E0425]: cannot find value `AVCOL_SPC_CHROMA_DERIVED_NCL` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:77:40
   |
77 |             Space::ChromaDerivedNCL => AVCOL_SPC_CHROMA_DERIVED_NCL,
   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find value `AVCOL_SPC_CHROMA_DERIVED_CL` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:78:39
   |
78 |             Space::ChromaDerivedCL => AVCOL_SPC_CHROMA_DERIVED_CL,
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find value `AVCOL_SPC_ICTCP` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:79:29
   |
79 |             Space::ICTCP => AVCOL_SPC_ICTCP,
   |                             ^^^^^^^^^^^^^^^ did you mean `AVCOL_SPC_FCC`?

and etc.

Can someone point out what I'm doing wrong?

I'm building inside Dockerfile. And this is my Cargo.toml.

[liushengyu]

I've tied to build example

And got

Compiling ffmpeg v0.2.0-alpha.2 (https://github.com/meh/rust-ffmpeg.git#dc6ace91)
error[E0425]: cannot find value `AVCOL_SPC_YCGCO` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:72:29
   |
72 |             Space::YCGCO => AVCOL_SPC_YCGCO,
   |                             ^^^^^^^^^^^^^^^ did you mean `AVCOL_SPC_YCOCG`?

error[E0425]: cannot find value `AVCOL_SPC_CHROMA_DERIVED_NCL` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:77:40
   |
77 |             Space::ChromaDerivedNCL => AVCOL_SPC_CHROMA_DERIVED_NCL,
   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find value `AVCOL_SPC_CHROMA_DERIVED_CL` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:78:39
   |
78 |             Space::ChromaDerivedCL => AVCOL_SPC_CHROMA_DERIVED_CL,
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope

error[E0425]: cannot find value `AVCOL_SPC_ICTCP` in this scope
  --> /usr/local/cargo/git/checkouts/rust-ffmpeg-9e0ba839e85456a1/dc6ace9/src/util/color/space.rs:79:29
   |
79 |             Space::ICTCP => AVCOL_SPC_ICTCP,
   |                             ^^^^^^^^^^^^^^^ did you mean `AVCOL_SPC_FCC`?

and etc.

Can someone point out what I'm doing wrong?

I'm building inside Dockerfile. And this is my Cargo.toml.

Have you resolved this problem？ I met the same，help~

[tilpner]

If you're building rust-ffmpeg master, you need to make sure your ffmpeg version is up-to-date (6.0+). For older ffmpeg versions, use previous rust-ffmpeg revisions (or crate versions, but those haven't been published in a while).

[kornelski]

BTW, I've raised this issue in the past. This crate is broken by design, and it only works on dev's machine.

It's using bindgen on ffmpeg headers of a whatever version is installed in the OS, but then expects the bindgened result to have very specific symbols existing (and not existing) that has to match the very specific version of ffmpeg that the person who wrote the Rust code had.

You should use ffmpeg-next-sys instead. It puts appropriate #[cfg] on the symbols to support more than dev's own version of ffmpeg.