static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type) { OutputStream *ost; AVStream *st = avformat_new_stream(oc, NULL); int idx = oc->nb_streams - 1, ret = 0; char *bsf = NULL, *next, *codec_tag = NULL; AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL; double qscale = -1; char *buf = NULL, *arg = NULL, *preset = NULL; AVIOContext *s = NULL; if (!st) { av_log(NULL, AV_LOG_FATAL, "Could not alloc stream.\n"); exit(1); } if (oc->nb_streams - 1 < o->nb_streamid_map) st->id = o->streamid_map[oc->nb_streams - 1]; output_streams = grow_array(output_streams, sizeof(*output_streams), &nb_output_streams, nb_output_streams + 1); if (!(ost = av_mallocz(sizeof(*ost)))) exit(1); output_streams[nb_output_streams - 1] = ost; ost->file_index = nb_output_files; ost->index = idx; ost->st = st; st->codec->codec_type = type; choose_encoder(o, oc, ost); if (ost->enc) { ost->opts = filter_codec_opts(codec_opts, ost->enc->id, oc, st, ost->enc); } avcodec_get_context_defaults3(st->codec, ost->enc); st->codec->codec_type = type; // XXX hack, avcodec_get_context_defaults2() sets type to unknown for stream copy MATCH_PER_STREAM_OPT(presets, str, preset, oc, st); if (preset && (!(ret = get_preset_file_2(preset, ost->enc->name, &s)))) { do { buf = get_line(s); if (!buf[0] || buf[0] == '#') { av_free(buf); continue; } if (!(arg = strchr(buf, '='))) { av_log(NULL, AV_LOG_FATAL, "Invalid line found in the preset file.\n"); exit(1); } *arg++ = 0; av_dict_set(&ost->opts, buf, arg, AV_DICT_DONT_OVERWRITE); av_free(buf); } while (!s->eof_reached); avio_close(s); } if (ret) { av_log(NULL, AV_LOG_FATAL, "Preset %s specified for stream %d:%d, but could not be opened.\n", preset, ost->file_index, ost->index); exit(1); } ost->max_frames = INT64_MAX; MATCH_PER_STREAM_OPT(max_frames, i64, ost->max_frames, oc, st); MATCH_PER_STREAM_OPT(bitstream_filters, str, bsf, oc, st); while (bsf) { if (next = strchr(bsf, ',')) *next++ = 0; if (!(bsfc = av_bitstream_filter_init(bsf))) { av_log(NULL, AV_LOG_FATAL, "Unknown bitstream filter %s\n", bsf); exit(1); } if (bsfc_prev) bsfc_prev->next = bsfc; else ost->bitstream_filters = bsfc; bsfc_prev = bsfc; bsf = next; } MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st); if (codec_tag) { uint32_t tag = strtol(codec_tag, &next, 0); if (*next) tag = AV_RL32(codec_tag); st->codec->codec_tag = tag; } MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st); if (qscale >= 0) { st->codec->flags |= CODEC_FLAG_QSCALE; st->codec->global_quality = FF_QP2LAMBDA * qscale; } if (oc->oformat->flags & AVFMT_GLOBALHEADER) st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER; av_opt_get_int(sws_opts, "sws_flags", 0, &ost->sws_flags); ost->pix_fmts[0] = ost->pix_fmts[1] = AV_PIX_FMT_NONE; return ost; }