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|
let () =
if Array.length Sys.argv < 2 then (
Printf.printf "usage: %s input_file\n" Sys.argv.(0);
exit 0);
Avutil.Log.set_level `Debug;
Avutil.Log.set_callback print_string;
let src = Av.open_input Sys.argv.(1) in
let audio, audio_frame =
try
let audio_idx, audio_src, _ = Av.find_best_audio_stream src in
let audio_dst = Avdevice.open_default_audio_output () in
let _, audio_stream, _ = List.hd (Av.get_audio_streams audio_dst) in
(Some (audio_idx, audio_dst, audio_stream), [audio_src])
with Avutil.Error _ -> (None, [])
in
let video, video_frame =
try
let video_idx, video_src, _ = Av.find_best_video_stream src in
let video_dst = Avdevice.open_video_output "xv" in
let _, video_stream, _ = List.hd (Av.get_video_streams video_dst) in
(Some (video_idx, video_dst, video_stream), [video_src])
with Avutil.Error _ -> (None, [])
in
let rec f () =
match (Av.read_input ~audio_frame ~video_frame src, audio, video) with
| `Audio_frame (i, frame), Some (idx, _, stream), _ when i = idx ->
Av.write_frame stream frame;
f ()
| `Video_frame (i, frame), _, Some (idx, _, stream) when i = idx ->
Av.write_frame stream frame;
f ()
| exception Avutil.Error `Eof -> ()
| _ -> f ()
in
f ();
Av.close src;
let () = match audio with Some (_, dst, _) -> Av.close dst | None -> () in
let () = match video with Some (_, dst, _) -> Av.close dst | None -> () in
Gc.full_major ();
Gc.full_major ()
|
