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examples/metadata: cleanup and find best streams

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This commit is contained in:
meh 2015-08-28 16:33:19 +02:00
parent 549727b084
commit 13c9f8e5ab
1 changed files with 35 additions and 17 deletions
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52
examples/metadata.rs
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@ -7,6 +7,19 @@ fn print_metadata(context: &ffmpeg::format::Context) {
for (k, v) in context.metadata().iter() {
println!("{}: {}", k, v);
}
if let Some(stream) = context.streams().best(ffmpeg::media::Type::Video) {
println!("Best video stream index: {}", stream.index());
}
if let Some(stream) = context.streams().best(ffmpeg::media::Type::Audio) {
println!("Best audio stream index: {}", stream.index());
}
if let Some(stream) = context.streams().best(ffmpeg::media::Type::Subtitle) {
println!("Best subtitle stream index: {}", stream.index());
}
for stream in context.streams() {
println!("stream index {}:", stream.index());
println!("\ttime_base: {}", stream.time_base());
@ -22,9 +35,9 @@ fn print_metadata(context: &ffmpeg::format::Context) {
println!("\tid: {:?}", codec.id());
println!("\tbit_rate: {}", codec.bit_rate());
println!("\tdelay: {}", codec.delay());
if let Ok(decoder) = codec.decoder() {
if let Ok(video) = decoder.video() {
if let Ok(decoder) = codec.decoder() {
if let Ok(video) = decoder.video() {
println!("\tvideo.width: {}", video.width());
println!("\tvideo.height: {}", video.height());
println!("\tvideo.format: {:?}", video.format());
@ -37,10 +50,11 @@ fn print_metadata(context: &ffmpeg::format::Context) {
println!("\tvideo.chroma_location: {:?}", video.chroma_location());
println!("\tvideo.references: {}", video.references());
println!("\tvideo.intra_dc_precision: {}", video.intra_dc_precision());
}
}
if let Ok(decoder) = codec.decoder() {
if let Ok(audio) = decoder.audio() {
}
}
if let Ok(decoder) = codec.decoder() {
if let Ok(audio) = decoder.audio() {
println!("\taudio.rate: {}", audio.rate());
println!("\taudio.channels: {}", audio.channels());
println!("\taudio.format: {:?}", audio.format());
@ -50,18 +64,22 @@ fn print_metadata(context: &ffmpeg::format::Context) {
println!("\taudio.max_rate: {}", audio.max_rate());
println!("\taudio.frame_start: {:?}", audio.frame_start());
}
}
}
}
}
}
fn main() {
if let Ok(()) = ffmpeg::init() {
if let Some(file) = env::args().nth(1) {
let path = Path::new(&file);
match ffmpeg::format::open(&path) {
Err(error) => println!("Error: {}", error),
Ok(context) => print_metadata(&context),
}
} else { println!("Usage: metadata path/to/file") }
ffmpeg::init().unwrap();
if let Some(file) = env::args().nth(1) {
let path = Path::new(&file);
match ffmpeg::format::open(&path) {
Ok(context) => print_metadata(&context),
Err(error) => println!("error: {}", error),
}
}
else {
println!("Usage: metadata <path>")
}
}