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Unable to generate graph for video inputs
Hello, I have been unable to get the graphing feature (-g) to work on Arch Linux. The command I used was ssimulacra2_rs video source.mkv encoded.mkv -g -f 20. I have made sure install all the dependencies listed in the README but I run into a panic from the plotters library. I initially tried using the AUR package but when I ran into this issue I attempted to clone from GitHub and build manually. I used cargo --frozen --release to build, I made one change to the Cargo.toml to get more information in the backtrace.
[profile.release]
lto = "thin"
codegen-units = 1
+debug=true
Here is the backtrace I got using RUST_BACKTRACE=full, it appears to be a font issue of some kind. I installed some additional fonts along the way (and rebuilt font cache and restarted a few times as well) but that did not seem to resolve the issue. I believe only stack frames 15-25 are relevant but I posted the full backtrace just in case.
thread 'main' panicked at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/style/font/mod.rs:75:9:
The font implementation is unable to draw text
stack backtrace:
0: 0x5ddfbcbcd70b - std::backtrace_rs::backtrace::libunwind::trace::h3a9fba4a6e9efa3f
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x5ddfbcbcd70b - std::backtrace_rs::backtrace::trace_unsynchronized::h1b343a341f1987fa
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x5ddfbcbcd70b - std::sys_common::backtrace::_print_fmt::h1e2e48e8548e08f3
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:68:5
3: 0x5ddfbcbcd70b - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h2fe490803af88cd5
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:44:22
4: 0x5ddfbca6d9b0 - core::fmt::rt::Argument::fmt::hd7b7dd73d09b2e4a
at /usr/src/debug/rust/rustc-1.77.2-src/library/core/src/fmt/rt.rs:142:9
5: 0x5ddfbca6d9b0 - core::fmt::write::h0e806f9ceb53dc01
at /usr/src/debug/rust/rustc-1.77.2-src/library/core/src/fmt/mod.rs:1120:17
6: 0x5ddfbcbcb392 - std::io::Write::write_fmt::hc993ca4907c5591c
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/io/mod.rs:1846:15
7: 0x5ddfbcbcd4a4 - std::sys_common::backtrace::_print::haba7adce0567c729
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:47:5
8: 0x5ddfbcbcd4a4 - std::sys_common::backtrace::print::h7188c066e4378df6
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:34:9
9: 0x5ddfbcbcee40 - std::panicking::default_hook::{{closure}}::hdc0fc6164adc38ae
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:272:22
10: 0x5ddfbcbceb5f - std::panicking::default_hook::h42848e1a5516cbc3
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:292:9
11: 0x5ddfbcbcf35e - std::panicking::rust_panic_with_hook::h37f14317b32091f5
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:781:13
12: 0x5ddfbcb51f1d - std::panicking::begin_panic::{{closure}}::hfdf0a5695ea254f4
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:689:9
13: 0x5ddfbcb45036 - std::sys_common::backtrace::__rust_end_short_backtrace::h4ae1d371af835fb6
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:171:18
14: 0x5ddfbca0ea2a - std::panicking::begin_panic::h0729d57528276add
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:688:12
15: 0x5ddfbcb7828f - plotters::style::font::FontData::draw::h2f2fdc16719b9fe7
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/style/font/mod.rs:75:9
16: 0x5ddfbcb7828f - plotters::style::font::font_desc::FontDesc::draw::ha43101427b481abe
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/style/font/font_desc.rs:168:29
17: 0x5ddfbcb7828f - <plotters::style::text::TextStyle as plotters_backend::text::BackendTextStyle>::draw::h4e91a0ba26ad7a7e
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/style/text.rs:322:9
18: 0x5ddfbcb7828f - plotters_backend::DrawingBackend::draw_text::h5e700ae2755da5e6
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-backend-0.3.5/src/lib.rs:250:15
19: 0x5ddfbcb7828f - plotters::drawing::area::DrawingArea<DB,plotters::coord::Shift>::titled::{{closure}}::h8751180af9f91d0d
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/drawing/area.rs:496:13
20: 0x5ddfbcb7828f - plotters::drawing::area::DrawingArea<DB,CT>::backend_ops::h0835a25e43ebb6ae
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/drawing/area.rs:282:13
21: 0x5ddfbcb7828f - plotters::drawing::area::DrawingArea<DB,plotters::coord::Shift>::titled::h8fccb641644ba503
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/drawing/area.rs:495:9
22: 0x5ddfbcb7828f - plotters::chart::builder::ChartBuilder<DB>::build_cartesian_2d::ha4e0469ed722b6be
at /home/tbejos/.cargo/registry/src/index.crates.io-6f17d22bba15001f/plotters-0.3.5/src/chart/builder.rs:332:28
23: 0x5ddfbcb94c61 - ssimulacra2_rs::video::compare_videos_inner::hd282572a05a9f33a
at /home/tbejos/Videos/testing/ssimulacra2_bin/src/video.rs:454:29
24: 0x5ddfbcb94c61 - ssimulacra2_rs::video::compare_videos::h35e00759f84ce118
at /home/tbejos/Videos/testing/ssimulacra2_bin/src/video.rs:263:5
25: 0x5ddfbcb9ebc9 - ssimulacra2_rs::main::h5dfd29969b29ba45
at /home/tbejos/Videos/testing/ssimulacra2_bin/src/main.rs:134:13
26: 0x5ddfbcb45043 - core::ops::function::FnOnce::call_once::hcb9495672c777a38
at /usr/src/debug/rust/rustc-1.77.2-src/library/core/src/ops/function.rs:250:5
27: 0x5ddfbcb45043 - std::sys_common::backtrace::__rust_begin_short_backtrace::h1a0b6f9ea116d60a
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/sys_common/backtrace.rs:155:18
28: 0x5ddfbcb4e5f9 - std::rt::lang_start::{{closure}}::h7ab8da793ff261eb
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/rt.rs:166:18
29: 0x5ddfbcbc3025 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6a5f00ab1c581878
at /usr/src/debug/rust/rustc-1.77.2-src/library/core/src/ops/function.rs:284:13
30: 0x5ddfbcbc3025 - std::panicking::try::do_call::h710f22b7f4c6868f
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:554:40
31: 0x5ddfbcbc3025 - std::panicking::try::h4011a8d70837f180
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:518:19
32: 0x5ddfbcbc3025 - std::panic::catch_unwind::h46d9bc1e1fef08b6
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panic.rs:142:14
33: 0x5ddfbcbc3025 - std::rt::lang_start_internal::{{closure}}::h876504adee55eae2
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/rt.rs:148:48
34: 0x5ddfbcbc3025 - std::panicking::try::do_call::hcbcce42fa17f59ba
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:554:40
35: 0x5ddfbcbc3025 - std::panicking::try::hf60b1f3f8d6a4862
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panicking.rs:518:19
36: 0x5ddfbcbc3025 - std::panic::catch_unwind::h9e9ddc06c0f56cbe
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/panic.rs:142:14
37: 0x5ddfbcbc3025 - std::rt::lang_start_internal::he5e87cd982b6a812
at /usr/src/debug/rust/rustc-1.77.2-src/library/std/src/rt.rs:148:20
38: 0x5ddfbcbabcac - main
39: 0x72c72cb1bcd0 - <unknown>
40: 0x72c72cb1bd8a - __libc_start_main
41: 0x5ddfbca14dd5 - _start
42: 0x0 - <unknown>
Is there a dependency that I am missing? From what I can tell I believe I have followed all of the steps to build as intended. Has anyone else been able to graph successfully recently, or is this not an issue for anyone else? Thanks!
I can reproduce this. Maybe it's because of the "sans-serif" font being used? I don't have a font with that exact name installed
I see that in the README it has ttf-bitstream-vera as a dependency but I can see that isn't the default font on my system
$ fc-match "sans-serif"
NotoSans-Regular.ttf: "Noto Sans" "Regular"
maybe that is related? Although maybe you can't just match based on font-family like you mention
I'll be honest, I don't know much about how fonts are selected/loaded. If fc-match correctly represents the font selection done by the system, I'd honestly expect "sans-serif" to just work given that it also returns a font for me.
Okay so I was able to fix it by making the following change, however it made some changes to Cargo.lock as well, I am not familiar with rust development, if I make a PR should I also include the changes to Cargo.lock, or is that auto-generated/populated by something like GitHub Actions?
diff --git a/Cargo.toml b/Cargo.toml
index 6c2e003..55ee868 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ features = ["png", "jpeg", "webp", "hdr", "exr"]
[dependencies.plotters]
version = "0.3.4"
default-features = false
-features = ["bitmap_backend", "area_series"]
+features = ["bitmap_backend", "area_series", "ttf"]
optional = true
[profile.release]
Based on this change fixing it looks like the issue is that it might not support ttf fonts by default, I wonder if setting the default to a bitmap font instead would work. I am not sure if this would break it for people using non-ttf fonts or not
if I make a PR should I also include the changes to Cargo.lock, or is that auto-generated/populated by something like GitHub Actions?
Yes, please add those aswell. There's no auto-updater on this repo, and the change to Cargo.lock is directly caused by your change to the Cargo.toml file, so it's part of the change.