Function main

doc/examples/qsv_transcode.c:341–440

}

int main(int argc, char **argv)
{
    const AVCodec *enc_codec;
    int ret = 0;
    AVPacket *dec_pkt = NULL;

    if (argc < 5 || (argc - 5) % 2) {
        av_log(NULL, AV_LOG_ERROR, "Usage: %s <input file> <encoder> <output file>"
               " <\"encoding option set 0\"> [<frame_number> <\"encoding options set 1\">]...\n", argv[0]);
        return 1;
    }
    setting_number = (argc - 5) / 2;
    dynamic_setting = av_malloc(setting_number * sizeof(*dynamic_setting));
    if (!dynamic_setting) {
        ret = AVERROR(ENOMEM);
        goto end;
    }
    current_setting_number = 0;
    for (int i = 0; i < setting_number; i++) {
        dynamic_setting[i].frame_number = atoi(argv[i*2 + 5]);
        dynamic_setting[i].optstr = argv[i*2 + 6];
    }

    ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_QSV, NULL, NULL, 0);
    if (ret < 0) {
        fprintf(stderr, "Failed to create a QSV device. Error code: %s\n", av_err2str(ret));
        goto end;
    }

    dec_pkt = av_packet_alloc();
    if (!dec_pkt) {
        fprintf(stderr, "Failed to allocate decode packet\n");
        goto end;
    }

    if ((ret = open_input_file(argv[1])) < 0)
        goto end;

    if (!(enc_codec = avcodec_find_encoder_by_name(argv[2]))) {
        fprintf(stderr, "Could not find encoder '%s'\n", argv[2]);
        ret = -1;
        goto end;
    }

    if ((ret = (avformat_alloc_output_context2(&ofmt_ctx, NULL, NULL, argv[3]))) < 0) {
        fprintf(stderr, "Failed to deduce output format from file extension. Error code: "
                "%s\n", av_err2str(ret));
        goto end;
    }

    if (!(encoder_ctx = avcodec_alloc_context3(enc_codec))) {
        ret = AVERROR(ENOMEM);
        goto end;
    }

    ret = avio_open(&ofmt_ctx->pb, argv[3], AVIO_FLAG_WRITE);
    if (ret < 0) {
        fprintf(stderr, "Cannot open output file. "