2 * Copyright (c) 2012 Martin Storsjo
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/time.h"
25 #include "libavformat/avformat.h"
27 static int usage(const char *argv0, int ret)
29 fprintf(stderr, "%s [-b bytespersec] [-d duration] input_url output_url\n", argv0);
33 int main(int argc, char **argv)
35 int bps = 0, duration = 0, ret, i;
36 const char *input_url = NULL, *output_url = NULL;
37 int64_t stream_pos = 0;
40 AVIOContext *input, *output;
43 avformat_network_init();
45 for (i = 1; i < argc; i++) {
46 if (!strcmp(argv[i], "-b") && i + 1 < argc) {
47 bps = atoi(argv[i + 1]);
49 } else if (!strcmp(argv[i], "-d") && i + 1 < argc) {
50 duration = atoi(argv[i + 1]);
52 } else if (!input_url) {
54 } else if (!output_url) {
57 return usage(argv[0], 1);
61 return usage(argv[0], 1);
63 ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, NULL);
65 av_strerror(ret, errbuf, sizeof(errbuf));
66 fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
69 if (duration && !bps) {
70 int64_t size = avio_size(input);
72 av_strerror(ret, errbuf, sizeof(errbuf));
73 fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf);
76 bps = size / duration;
78 ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, NULL);
80 av_strerror(ret, errbuf, sizeof(errbuf));
81 fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
85 start_time = av_gettime_relative();
89 n = avio_read(input, buf, sizeof(buf));
92 avio_write(output, buf, n);
96 while ((av_gettime_relative() - start_time) * bps / AV_TIME_BASE < stream_pos)
106 avformat_network_deinit();