diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index a2ecddae71..58ec13e5a8 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -1103,9 +1103,22 @@ static int open_input_file(OptionsContext *o, const char *filename) } } + if (o->start_time != AV_NOPTS_VALUE && o->start_time_eof != AV_NOPTS_VALUE) { + av_log(NULL, AV_LOG_WARNING, "Cannot use -ss and -sseof both, using -ss for %s\n", filename); + o->start_time_eof = AV_NOPTS_VALUE; + } + if (o->start_time_eof != AV_NOPTS_VALUE) { - if (ic->duration>0) { + if (o->start_time_eof >= 0) { + av_log(NULL, AV_LOG_ERROR, "-sseof value must be negative; aborting\n"); + exit_program(1); + } + if (ic->duration > 0) { o->start_time = o->start_time_eof + ic->duration; + if (o->start_time < 0) { + av_log(NULL, AV_LOG_WARNING, "-sseof value seeks to before start of file %s; ignored\n", filename); + o->start_time = AV_NOPTS_VALUE; + } } else av_log(NULL, AV_LOG_WARNING, "Cannot use -sseof, duration of %s not known\n", filename); }