Tulisan ini berisi panduan praktis atau tips dan tricks untuk merubah multi file dari format shockwave SWF menjadi multi file dalam format PDF. Dengan mengunakan panduan ini diharapkan pembaca, khususnya pengguna linux dapat memahami bagaimana cara men-download multi SWF files dan mengkonversinya menjadi satu file PDF.
Pendahuluan
File shockwave (SWF) selalu dipergunakan dalam mempresentasikan berbagai media seperti buku, menjadi media yang mudah diakses dan dibaca oleh para pengguna web (flippingbooks). Buku ini hanya bisa dibaca jikalau kita terkoneksi dengan situs tersebut. Oleh karena itu, penggunaan SWF menjadi terasa membosankan. Dilain fihak, tidak semua pengguna komputer selalu terkoneksi ke internet. Karena alasan inilah penulis berusaha untuk membantu netter untuk mengetahui bagaimana cara kita mendapatkan multi file SWF setelah itu merubah file ini menjadi bentuk satu file PDF.
Adapun software pendukung nya adalah sebagai berikut,
1. cget
2. gnash
3. convert
4. pdfsam
Dengan menggunakan ke-4 program ini, kita dapat men-download dan merubah SWF menjadi PDF dengan mudah. Cara penggunaan program di atas dapat dilihat pada diagram sebagai berikut,
1. Men-download multi file SWF
Multi file SWF dapat didownload (diunduh) dengan menggunakan sintaks sbb:
cget -O page1.swf http://……/page_1.swf
cget -O page1.swf http://……/page_2.swf
…
cget -O page1.swf http://……/page_n.swf
Susunan perintah di atas dapat dibuat dengan menggunakan bantuan excel lalu menyimpannya dalam format text. Dengan cara mengcopy sintaks di atas dan menempelkannya (paste) ke dalam terminal, maka file page1.swf, page2.swf,…, page_n.swf dapat didownload dengan cepat.
2. Mengkonversi SWF menjadi PNG
Dari multi file SWF yang sudah di-download, sebelum di-convert menjadi PDF, harus dirobah terlebih dahulu menjadi file dalam format PNG. Sintaks atau perintah (command line) yang harus dibuat lebih kurang adalah seperti berikut,
gnash -s 4 page_1.swf –screenshot 1 -t 5
gnash -s 4 page_2.swf –screenshot 1 -t 5
…
gnash -s 4 page_n.swf –screenshot 1 -t 5
Susunan perintah di atas juga dapat dibuat dengan menggunakan bantuan excel lalu disimpan dalam format text. Dengan cara mengcopy sintaks di atas dan menempelkannya (paste) ke dalam terminal maka file page_1.swf, page_2.swf, …, page_n.swf akan discan/dirobah bentuk menjadi file sbb: screenshot-page_1.swf-1.png, screenshot-page_2.swf-1.png,…, screenshot-page_n.swf-1.png. Jumlah sintaks yang disusun harus sama dengan jumlah file SWF yang sudah di-download. Bilangan 5 pada command line ini menunjukkan lama waktu scanning dalam detik. Bila gambar SWF yang di-scan cukup besar, 5 dapat dibesarkan menjadi 15 atau 20 (detik).
3. Mengkonversi PNG menjadi PDF
Multi file PNG yang sudah dihasilkan dapat di-convert menjadi PDF dengan menggunakan sintaks sebagai berikut,
convert screenshot-page_1.swf-1 page_1.pdf
convert screenshot-page_2.swf-1 page_2.pdf
…
convert screenshot-page_n.swf-1 page_n.pdf
Dengan cara yang sama seperti cara di atas maka dari file PNG dapat dihasilkan PDF files.
Dengan menggunakan program pdfsam, file PDF yang sudah tersusun berdasarkan urutan nomornya dapat dikonversi atau di merger menjadi 1(satu) file PDF.
Walaupun SWF dapat dirobah menjadi file PDF, tetap saja isi dokumen PDF ini tidak dapat di block untuk di copy dan paste ke dokumen lain. Hal ini karena dokumen yang dihasilkan sama dengan kwalitas dokumen hasil scan.
Dari penjelasan di atas, kiranya ini dapat memberikan sedikit pengetahuan bagi pengguna linux yang sangat menginginkan file dokumen dalam format PDF yang asalnya dari file dalam format SWF.
Untuk jelasnya dokumen dapat didownload dari ilmukomputer.com. atau dari sini.
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