feat(tests): enhance ffmpeg examples with improved channel layout han… #594

Job	Run time
rust_clippy_check_windows	1m 21s
rust_clippy_check_ubuntu	7m 7s
rustfmt_check (macos-latest)	16s
build_dynamic_and_test_windows_pre	7m 49s
rustfmt_check (windows-latest)	27s
rustfmt_check (ubuntu-latest)	16s
build_static_and_test_ubuntu (release/6.0, 1.81.0, no valgrind)	7m 0s
build_static_and_test_ubuntu (release/6.1, 1.81.0, no valgrind)	6m 30s
docs_rs_check	1m 31s
build_static_and_test_ubuntu (release/7.0, 1.81.0, no valgrind)	8m 17s
build_static_and_test_ubuntu (release/7.0, 1.81.0, valgrind)	7m 41s
build_static_and_test_ubuntu (release/7.0, nightly, no valgrind)	7m 50s
build_static_and_test_ubuntu (release/7.1, 1.81.0, valgrind)	7m 8s
build_static_and_test_ubuntu (release/6.0, nightly, no valgrind)	7m 12s
build_static_and_test_ubuntu (release/6.1, nightly, no valgrind)	8m 23s
build_static_and_test_ubuntu (release/7.1, nightly, no valgrind)	8m 32s
build_static_and_test_ubuntu (release/7.1, 1.81.0, no valgrind)	7m 11s
build_dynamic_and_test_windows (1.81.0)	1m 55s
build_dynamic_and_test_windows (nightly)	1m 43s
	1h 38m 9s

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