add help

[nihav-encoder.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index ac5a92c91610c43738129346e38609051bae06a6..6b9086f08913a4a15023ffcdb51fb31342c7185c 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -185,6 +185,23 @@ impl Transcoder {
             } else if oval.len() == 2 {
 //todo parse encoder options, store, init later
                 match oval[0] {
+                    "timebase" => {
+                        let mut parts = oval[1].split('/');
+                        let num = parts.next().unwrap();
+                        let den = parts.next();
+                        if let Some(den) = den {
+                            let rnum = num.parse::<u32>();
+                            let rden = den.parse::<u32>();
+                            if let (Ok(num), Ok(den)) = (rnum, rden) {
+                                ostr.enc_params.tb_num = num;
+                                ostr.enc_params.tb_den = den;
+                            } else {
+                                println!("invalid timebase value");
+                            }
+                        } else {
+                            println!("invalid timebase format (should be num/den)");
+                        }
+                    },
                     "encoder" => {
                         if enc_reg.find_encoder(oval[1]).is_some() {
                             ostr.enc_name = oval[1].to_string();
@@ -636,7 +653,30 @@ fn main() {
     let args: Vec<_> = env::args().collect();
 
     if args.len() == 1 {
-        println!("usage: nihav-encoder [-noout] [-vn] [-an] input [lastpts]");
+        println!("usage: nihav-encoder [options] --input inputfile --output outputfile");
+        println!(" use nihav-encoder --help to list all available options");
+        return;
+    }
+    if args.len() == 2 && (args[1] == "--help" || args[1] == "-h") {
+        println!("usage: nihav-encoder [options] --input inputfile --output outputfile");
+        println!(" query options:");
+        println!("  --list-{{decoders,encoders,demuxers,muxers}} - lists all available decoders/encoders/demuxers/muxers");
+        println!("  --query-{{decoder,encoder,demuxer,muxer}}-options name - lists all options recognized by that decoder/encoder/demuxer/muxer");
+        println!(" processing options:");
+        println!("  --input inputfile           - set input file");
+        println!("  --input-format fmt          - force input format");
+        println!("  --demuxer-options options   - set input demuxer options");
+        println!("  --output outputfile         - set output file");
+        println!("  --output-format fmt         - force output format");
+        println!("  --muxer-options options     - set output muxer options");
+        println!("  --no-audio                  - do not decode audio streams");
+        println!("  --no-video                  - do not decode video streams");
+        println!("  --start starttime           - start decoding from given position");
+        println!("  --end endtime               - end decoding at given position");
+        println!("  --istreamX options          - set options for input stream X");
+        println!("  --ostreamX options          - set options for output stream X");
+        println!();
+        println!(" (de)muxer and stream options are passed as comma-separated list e.g. --ostream0 width=320,height=240,flip");
         return;
     }