diff options
| author | Gyan Doshi <ffmpeg@gyani.pro> | 2021-07-16 17:59:39 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-07-17 20:34:21 +0530 |
| commit | c320b78e95bab2a71a636dc4da905522c4646b35 (patch) | |
| tree | 55053642cd89687b0e6072a3a83846b8219c2e60 /fftools/ffmpeg_opt.c | |
| parent | 075157ec867e0bf8d500bbbd23fee86f37eff45a (diff) | |
ffmpeg: add option readrate
Allows to read inputs at arbitrary rates.
-re is equivalent to -readrate 1
Tested with -copyts {+ start_at_zero}, -ss, streamcopied & decoded streams.
Diffstat (limited to 'fftools/ffmpeg_opt.c')
| -rw-r--r-- | fftools/ffmpeg_opt.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index cb7d6ceefc..9558bcaeb2 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -1286,6 +1286,17 @@ static int open_input_file(OptionsContext *o, const char *filename) f->loop = o->loop; f->duration = 0; f->time_base = (AVRational){ 1, 1 }; + + f->readrate = o->readrate ? o->readrate : 0.0; + if (f->readrate < 0.0f) { + av_log(NULL, AV_LOG_ERROR, "Option -readrate for Input #%d is %0.3f; it must be non-negative.\n", nb_input_files, f->readrate); + exit_program(1); + } + if (f->readrate && f->rate_emu) { + av_log(NULL, AV_LOG_WARNING, "Both -readrate and -re set for Input #%d. Using -readrate %0.3f.\n", nb_input_files, f->readrate); + f->rate_emu = 0; + } + f->pkt = av_packet_alloc(); if (!f->pkt) exit_program(1); @@ -3507,7 +3518,10 @@ const OptionDef options[] = { "when dumping packets, also dump the payload" }, { "re", OPT_BOOL | OPT_EXPERT | OPT_OFFSET | OPT_INPUT, { .off = OFFSET(rate_emu) }, - "read input at native frame rate", "" }, + "read input at native frame rate; equivalent to -readrate 1", "" }, + { "readrate", HAS_ARG | OPT_FLOAT | OPT_OFFSET | + OPT_EXPERT | OPT_INPUT, { .off = OFFSET(readrate) }, + "read input at specified rate", "speed" }, { "target", HAS_ARG | OPT_PERFILE | OPT_OUTPUT, { .func_arg = opt_target }, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\" or \"dv50\" " "with optional prefixes \"pal-\", \"ntsc-\" or \"film-\")", "type" }, |