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Poboljšanje kvalitete videa skinutog sa interneta ?

 
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pape



Joined: 20 Aug 2008
Posts: 24

PostPosted: 13.01.2010 10:08    Post subject: Poboljšanje kvalitete videa skinutog sa interneta ? Add user to your forum ignore list Reply with quote

Skinuo sam više video clipova sa interneta slijedećih karakteristika:
Bit rate: 999 Kbps Resolution 320 x 240 pixels
Htio bi to da gledam na kućnome dvd playeru te sam konvertirao na 640 x 480 i normalno slika je loša.
Da li je moguće popraviti kvalitetu slike.
Znam da če sad mnogi kazati da tražim nemoguće, ali ipak me zanima, postoji li program kojim bi mogao bar malo popraviti sliku.
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LifeCanBeFun



Joined: 28 Apr 2006
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PostPosted: 13.01.2010 13:59    Post subject: Add user to your forum ignore list Reply with quote

ne postoji

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adam|bar



Joined: 28 Jun 2005
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PostPosted: 13.01.2010 15:05    Post subject: Add user to your forum ignore list Reply with quote

Postoji.
Može se u većini programa (Premiere, AE, Sony Vegas) za video obradu nešto malo slika popraviti i izoštriti. No pitanje je koliko je isplativo, jer treba utrošiti dosta vremena i truda, a poboljšanje neće biti značajno. Za početak bi trebalo znati raditi u tim aplikacijama.

Pristup rješavanju problema je jednostavan. Radi se slično kao i kada se mora pročistiti ili upscale-ati fotografija.
1. čišćenje artefakta kompresije
2. upscaling na željenu rezoluciju (vjerojatno 720*576 ili WS ekvivalent, ukoliko će se gledati na DVD playeru)
3. primjena filtera za izoštravanje
4. pohranjivanje tako editiranog videa sa što slabijom kompresijom, da se ne gube detalji.

E sad, početniku bi vjerojatno bilo najbrže to napraviti u VirtualDub-u koji je besplatan. Po defaultu VirtualDub može sve osim eliminiranja artefakata kompresije , ali to se može riješiti ovim pluginom:
http://compression.ru/video/deblocking/index_en.html

Kao što rekoh, slika se može na taj način minimalno popraviti, ali velikih promjena neće biti.

Last edited by adam|bar on 01.02.2010 23:29; edited 1 time in total

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gOrangutan



Joined: 28 Sep 2005
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PostPosted: 14.01.2010 20:12    Post subject: Add user to your forum ignore list Reply with quote

nemoš od male kobasice napravit velku

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adam|bar



Joined: 28 Jun 2005
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PostPosted: 14.01.2010 20:22    Post subject: Add user to your forum ignore list Reply with quote

Može se. Ukoliko su ciljevi realni.
Čovječe, pa danas od žemlje kobasicu rade.

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gOrangutan



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PostPosted: 14.01.2010 20:35    Post subject: Add user to your forum ignore list Reply with quote

sumnjam

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pape



Joined: 20 Aug 2008
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PostPosted: 01.02.2010 20:48    Post subject: Add user to your forum ignore list Reply with quote

Ajoj ljudi ne mogu vjerovat, kakvi odgovori (nepostoji, nemoš od male kobasice napravit veliku itd.)
Pa ljudi moji, znam da ne mogu dobiti neku super kvalitetu.
Bilo kakva bolja kvaliteta bi me zadovoljila.
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adam|bar



Joined: 28 Jun 2005
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PostPosted: 01.02.2010 20:52    Post subject: Add user to your forum ignore list Reply with quote

Pa nisu baš svi odgovori takvi. Ja sam ti dao i detaljne upute, samo, uzlaud mi trud, čini mi se.

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pape



Joined: 20 Aug 2008
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PostPosted: 01.02.2010 21:02    Post subject: Add user to your forum ignore list Reply with quote

Izvinjavam se nisam mislio na sve, samo na negativce.
Ok probat ču sa VirtualDubom.
Thanks
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Nyo



Joined: 15 Nov 2007
Posts: 408
Location: Subspace

PostPosted: 01.02.2010 21:04    Post subject: Add user to your forum ignore list Reply with quote

pape wrote:
Ajoj ljudi ne mogu vjerovat, kakvi odgovori (nepostoji, nemoš od male kobasice napravit veliku itd.)
Pa ljudi moji, znam da ne mogu dobiti neku super kvalitetu.
Bilo kakva bolja kvaliteta bi me zadovoljila.

čitaš ti postove??
evo ako si preskočio, adam|bar ti je sasvim dobar savjet dao:

adam|bar wrote:
Postoji.
Može se u većini programa (Premiere, AE, Sony Vegas) za video obradu nešto malo slika popraviti i izoštriti. No pitane je koliko je isplativo, jer treba utrošiti dosta vremena i truda, a poboljšanje neće biti značajno. Za početak bi trebalo znati raditi u tim aplikacijama.

Pristup rješavanju problema je jednostavan. Radi se slično kao i kada se mora pročistiti ili upscale-ati fotografija.
1. čišćenje artefakta kompresije
2. upscaling na željenu rezoluciju (vjerojatno 720*576 ili WS ekvivalent, ukoliko će se gledati na DVD playeru)
3. primjena filtera za izoštravanje
4. pohranjivanje tako editiranog videa sa što slabijom kompresijom, da se ne gube detalji.

E sad, početniku bi vjerojatno bilo najbrže to napraviti u VirtualDub-u koji je besplatan. Po defaultu VirtualDub može sve osim eliminiranja artefakata kompresije , ali to se može riješiti ovim pluginom:
http://compression.ru/video/deblocking/index_en.html

Kao što rekoh, slika se može na taj način minimalno popraviti, ali velikih promjena neće biti.

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pape



Joined: 20 Aug 2008
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PostPosted: 01.02.2010 21:06    Post subject: Add user to your forum ignore list Reply with quote

Ok hvala na pomoći, probaču i to šta adam|bar kaže
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pape



Joined: 20 Aug 2008
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PostPosted: 01.02.2010 21:24    Post subject: Add user to your forum ignore list Reply with quote

Evo mene opet, downloadovao sam taj filter (VirtualDub MSU Deblocking Filter) i extractovao ga u plugin folder VirtualDuba.
Otvorio sam video u VirtualDub-u i pod video/filters uradio add ali toga filtera nigdje na spisku ??
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adam|bar



Joined: 28 Jun 2005
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PostPosted: 01.02.2010 21:29    Post subject: Add user to your forum ignore list Reply with quote

Video>Filters>Add...>MSU Deblocking 2.2 i pojavi ti se interface.

Meni fino radi i na 32bit i na x64 verziji VirtualDub-a 1.9.1.
AKo ti ne radi možda imaš neku prastaru verziju?

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pape



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PostPosted: 01.02.2010 21:39    Post subject: Add user to your forum ignore list Reply with quote

Kočega razumijet, restartao sam comp i sad se napokon pojavio taj filter.
Thanks idem ga probat

Last edited by pape on 01.02.2010 21:48; edited 1 time in total
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adam|bar



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PostPosted: 01.02.2010 21:45    Post subject: Add user to your forum ignore list Reply with quote

Upravo sam isprobao na 1.9.7 32bit i radi bez problema.
Nešto krivo radiš.

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pape



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PostPosted: 01.02.2010 21:49    Post subject: Add user to your forum ignore list Reply with quote

Thanks, evo ga sad se pojavio napokon, nakon restarta.
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gOrangutan



Joined: 28 Sep 2005
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PostPosted: 02.02.2010 12:43    Post subject: Add user to your forum ignore list Reply with quote

i kakav je rezultat?

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pape



Joined: 20 Aug 2008
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PostPosted: 02.02.2010 23:03    Post subject: Add user to your forum ignore list Reply with quote

Da ti pravo kažem zadovoljan sam.
Slika je znatno bolja
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