failed to run custom build command for `ffmpeg-sys v4.0.2

[euppi98]

I try to compile the command - "cargo build --release --features=video" and give this error:

failed to run custom build command for `ffmpeg-sys v4.0.2 (https://github.com/meh/rust-ffmpeg-sys#55323cb9)

[kornelski]

gifski doesn't support ffmpeg 4. It requires ffmpeg 3. AFAIK Homebrew doesn't support ffmpeg 3, and therefore gifski doesn't support video on macOS any more.

[euppi98]

I installed ffmpeg 3, the same error!!!

[kornelski]

As the message says, it can't find libavutil

pkg-config --libs --cflags libavutil

must work, and it must be libavutil that is ffmpeg-3-compatible. Perhaps ffmpeg@3 package has renamed all the libraries, so they're libavutil@3 or such. Alternatively their .pc files are in ffmpeg3 directory, and not in the system-global pkg-config directory, so pkg-config doesn't know about them.

[jayzhan211]

As the message says, it can't find libavutil

pkg-config --libs --cflags libavutil

must work, and it must be libavutil that is ffmpeg-3-compatible. Perhaps ffmpeg@3 package has renamed all the libraries, so they're libavutil@3 or such. Alternatively their .pc files are in ffmpeg3 directory, and not in the system-global pkg-config directory, so pkg-config doesn't know about them.

how to run with command: pkg-config --libs --cflags libavutil in win10?

I use intelliJ in win10 run with cargo run --release --features=video example/001.webm --output example/output.gif

whole error message

C:\Users\JAY\IdeaProjects\gifski>cargo build --release --features=video
   Compiling ffmpeg-sys v4.2.1 (https://github.com/kornelski/rust-ffmpeg-sys#e8a28ab7)
error: failed to run custom build command for `ffmpeg-sys v4.2.1 (https://github.com/kornelski/rust-ffmpeg-sys#e8a28ab7)`

Caused by:
  process didn't exit successfully: `C:\Users\JAY\IdeaProjects\gifski\target\release\build\ffmpeg-sys-b32073d0a692eb21\build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Command { command: "\"pkg-config\" \"--libs\" \"--cflags\" \"libavutil\"", cause: Os { code: 2, kind: NotFound, message: "系統找不到指定的檔案。" } }', C:\Users
\JAY\.cargo\git\checkouts\rust-ffmpeg-sys-cc42c3a8223a62de\e8a28ab\build.rs:533:29
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[kornelski]

Oh, it's going to be a nightmare to try to get ffmpeg working on Windows. I can't help you with that.