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Do not fail if media info fails (#70)

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Data Retriever 2022-04-21 01:43:18 +00:00 committed by GitHub
parent 93dbb56464
commit 084381bde5
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1 changed files with 12 additions and 13 deletions
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25
examples/mp4info.rs
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@ -4,7 +4,7 @@ use std::io::prelude::*;
use std::io::{self, BufReader};
use std::path::Path;
use mp4::{Mp4Track, Result, TrackType, Error};
use mp4::{Error, Mp4Track, Result, TrackType};
fn main() {
let args: Vec<String> = env::args().collect();
@ -38,7 +38,10 @@ fn info<P: AsRef<Path>>(filename: &P) -> Result<()> {
println!("Movie:");
println!(" version: {}", mp4.moov.mvhd.version);
println!(" creation time: {}", creation_time(mp4.moov.mvhd.creation_time));
println!(
" creation time: {}",
creation_time(mp4.moov.mvhd.creation_time)
);
println!(" duration: {:?}", mp4.duration());
println!(" fragments: {:?}", mp4.is_fragmented());
println!(" timescale: {:?}\n", mp4.timescale());
@ -46,16 +49,17 @@ fn info<P: AsRef<Path>>(filename: &P) -> Result<()> {
println!("Found {} Tracks", mp4.tracks().len());
for track in mp4.tracks().values() {
let media_info = match track.track_type()? {
TrackType::Video => video_info(track)?,
TrackType::Audio => audio_info(track)?,
TrackType::Subtitle => subtitle_info(track)?,
TrackType::Video => video_info(track),
TrackType::Audio => audio_info(track),
TrackType::Subtitle => subtitle_info(track),
};
println!(
" Track: #{}({}) {}: {}",
track.track_id(),
track.language(),
track.track_type()?,
media_info
media_info.unwrap_or_else(|e| e.to_string())
);
}
Ok(())
@ -89,7 +93,6 @@ fn video_info(track: &Mp4Track) -> Result<String> {
fn audio_info(track: &Mp4Track) -> Result<String> {
if let Some(ref mp4a) = track.trak.mdia.minf.stbl.stsd.mp4a {
if mp4a.esds.is_some() {
let profile = match track.audio_profile() {
Ok(val) => val.to_string(),
_ => "-".to_string(),
@ -124,11 +127,7 @@ fn audio_info(track: &Mp4Track) -> Result<String> {
fn subtitle_info(track: &Mp4Track) -> Result<String> {
if track.trak.mdia.minf.stbl.stsd.tx3g.is_some() {
Ok(format!(
"{} ({:?})",
track.media_type()?,
track.box_type()?,
))
Ok(format!("{} ({:?})", track.media_type()?, track.box_type()?,))
} else {
Err(Error::InvalidData("tx3g box not found"))
}
@ -141,4 +140,4 @@ fn creation_time(creation_time: u64) -> u64 {
} else {
creation_time
}
}
}