FFmpeg - How can I get progress of transcode? - ffmpeg

Question

I'm using fffmpeg to do some video work,and now I get some troulbe.
I don't know how to get the progress of transcode.
I check ffmpeg.c and found that most time cost is 'transcode',
here is the source code of ffmpeg.c#transcode:
static int transcode(void)
{
XLOGD("==========transcode==========");
...
XLOGD("start transcode");
while (!received_sigterm) {
int64_t cur_time= av_gettime_relative();
/* if 'q' pressed, exits */
if (stdin_interaction)
if (check_keyboard_interaction(cur_time) < 0)
break;
/* check if there's any stream where output is still needed */
if (!need_output()) {
av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write
to, finishing.\n");
break;
}
ret = transcode_step();
if (ret < 0 && ret != AVERROR_EOF) {
av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n",
av_err2str(ret));
break;
}
/* dump report by using the output first video and audio streams */
print_report(0, timer_start, cur_time);
}
return ret;
}
I called ffmpeg like this:
int execute(int argc, char **argv)
{
if CONFIG_AVDEVICE
/* parse options and open all input/output files */
ret = ffmpeg_parse_options(argc, argv);
if (ret < 0){
return exit_program(1);
}
if (nb_output_files <= 0 && nb_input_files == 0) {
show_usage();
av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
return exit_program(1);
}
/* file converter / grab */
if (nb_output_files <= 0) {
av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
return exit_program(1);
}
if (nb_input_files == 0) {
av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
return exit_program(1);
}
for (i = 0; i < nb_output_files; i++) {
if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
want_sdp = 0;
}
current_time = ti = getutime();
if (transcode() < 0){
return exit_program(1);
}
return main_return_code;
}
Any ideas anyone?
Many thanks in advance.
#
many thanks, now I figure it out.
in ffmpeg.c, function
print_report(int is_last_report, int64_t timer_start, int64_t cur_time),
there I got some code block:
secs = FFABS(pts) / AV_TIME_BASE;
us = FFABS(pts) % AV_TIME_BASE;
mins = secs / 60;
secs %= 60;
hours = mins / 60;
mins %= 60;
from this I can know the duration that had been transcode.

Answer 1

First get duration of the movie :
int64_t duration = output_files[0]->ctx->duration;
Second in while loop :
You can calculate the percent with this formule :
int percent = (int)(((double)(cur_time - timer_start) / (double)(duration )) * 100);