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/*
* Copyright (C) 2020 Norbert Schlia (nschlia@oblivion-software.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* On Debian systems, the complete text of the GNU General Public License
* Version 3 can be found in `/usr/share/common-licenses/GPL-3'.
*/
#include <stdio.h>
#include <libavformat/avformat.h>
#include <libavutil/dict.h>
#include <libavutil/ffversion.h>
int main (int argc, char **argv)
{
if (argc != 2)
{
fprintf(stderr, "usage: %s <input_file>\n"
"Print all file meta data to screen.\n"
"\n", argv[0]);
fprintf(stderr, "ERROR: Exactly one parameter required\n\n");
return 1;
}
if (!strcmp(argv[1], "-v"))
{
printf("FFmpeg " FFMPEG_VERSION "\n");
return 0;
}
#if (LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(58, 9, 0))
av_register_all();
#endif
const char *filename = argv[1];
AVFormatContext *format_ctx = NULL;
int ret = avformat_open_input(&format_ctx, filename, NULL, NULL);
if (ret)
{
char error[AV_ERROR_MAX_STRING_SIZE];
av_strerror(ret, error, AV_ERROR_MAX_STRING_SIZE);
fprintf(stderr, "avformat_open_input() returns error for file '%s'\n%s\n", filename, error);
return ret;
}
ret = avformat_find_stream_info(format_ctx, NULL);
if (ret < 0)
{
av_log(NULL, AV_LOG_ERROR, "Cannot find stream information\n");
return ret;
}
for (unsigned int streamno = 0; streamno < format_ctx->nb_streams; streamno++)
{
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(format_ctx->streams[streamno]->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)) != NULL)
{
printf("%s=%s\n", tag->key, tag->value);
}
}
{
AVDictionaryEntry *tag = NULL;
while ((tag = av_dict_get(format_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)) != NULL)
{
printf("%s=%s\n", tag->key, tag->value);
}
}
avformat_close_input(&format_ctx);
return 0;
}
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