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https://github.com/alfg/mp4-rust.git
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b5367032a7
* Add ReadBox trait * Add boxtype macro * Remove offset in BoxHeader * Fix parsing error when box has largesize * Remove duplicated codes reading version and flags * Update examples * Fix test failure Co-authored-by: Byungwan Jun <unipro.kr@gmail.com>
80 lines
2.1 KiB
Rust
80 lines
2.1 KiB
Rust
use std::env;
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use std::fs::File;
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use std::io::prelude::*;
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use std::io::{self, BufReader};
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use std::path::Path;
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use mp4::{Mp4Track, Result, TrackType};
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() < 2 {
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println!("Usage: mp4info <filename>");
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std::process::exit(1);
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}
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if let Err(err) = info(&args[1]) {
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let _ = writeln!(io::stderr(), "{}", err);
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}
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}
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fn info<P: AsRef<Path>>(filename: &P) -> Result<()> {
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let f = File::open(filename)?;
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let size = f.metadata()?.len();
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let reader = BufReader::new(f);
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let mp4 = mp4::Mp4Reader::read_header(reader, size)?;
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println!("Metadata:");
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println!(" size : {}", mp4.size());
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println!(" major_brand : {}", mp4.major_brand());
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let mut compatible_brands = String::new();
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for brand in mp4.compatible_brands().iter() {
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compatible_brands.push_str(&brand.to_string());
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compatible_brands.push_str(",");
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}
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println!(" compatible_brands: {}", compatible_brands);
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println!("Duration: {:?}", mp4.duration());
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for track in mp4.tracks().iter() {
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let media_info = match track.track_type()? {
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TrackType::Video => video_info(track)?,
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TrackType::Audio => audio_info(track)?,
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};
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println!(
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" Track: #{}({}) {}: {}",
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track.track_id(),
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track.language(),
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track.track_type()?,
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media_info
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);
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}
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Ok(())
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}
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fn video_info(track: &Mp4Track) -> Result<String> {
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Ok(format!(
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"{} ({}) ({:?}), {}x{}, {} kb/s, {:.2} fps",
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track.media_type()?,
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track.video_profile()?,
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track.box_type()?,
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track.width(),
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track.height(),
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track.bitrate() / 1000,
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track.frame_rate_f64()
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))
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}
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fn audio_info(track: &Mp4Track) -> Result<String> {
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Ok(format!(
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"{} ({}) ({:?}), {} Hz, {}, {} kb/s",
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track.media_type()?,
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track.audio_profile()?,
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track.box_type()?,
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track.sample_freq_index()?.freq(),
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track.channel_config()?,
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track.bitrate() / 1000
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))
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}
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