resizing avi file...

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  • secotelli
    Gold Member
    Gold Member
    • Dec 2002
    • 100

    resizing avi file...

    I have one DivX movie now, but the quality is so bad. It is one cd and the resolution is 720x480. So I believe the main reason is this.I think if i can reduce the resolution somehow, it can be maybe a little bit better as video quality. So my question is, if there is any tool which helps me to reduce the resolution from .avi and create a new one?? Can Virtualdubmod make this?? any idea pleasee...??
  • Batman
    Lord of Digital Video
    Lord of Digital Video
    • Jan 2002
    • 2317

    #2
    Resizing the avi file is unlikely to improve quality. Re-sizing can be accomplished in virtualdub[mod], by using a resizing filter.

    Comment

    • SKD_Tech
      Lord of Digital Video
      Lord of Digital Video
      • Jan 2003
      • 1512

      #3
      Open the file in VirtualDub(MOD)
      Set Audio to Direct Stream Copy
      Set Video to Full Processing Mode
      Select Filters in the Video drop down menu
      Select the resizing filter and configure it

      And there ya go!

      Comment

      • secotelli
        Gold Member
        Gold Member
        • Dec 2002
        • 100

        #4
        Originally posted by Batman
        Resizing the avi file is unlikely to improve quality. Re-sizing can be accomplished in virtualdub[mod], by using a resizing filter.

        then if it is not possible to improve the quality by that, is it possible with any way?? do you have any suggestion instead of resizing?? i really need help Batman.....

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        • secotelli
          Gold Member
          Gold Member
          • Dec 2002
          • 100

          #5
          By the way SKD_Tech, "configure it" then what?? then i click OK, but after that i dont know what to do... if i try to save as avi, then it says it will be VERY large file.. so i cant do it.. if you explain the end too, i will really appreciate... thanks a lot anyway...
          Last edited by secotelli; 13 Apr 2003, 06:08 AM.

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          • Batman
            Lord of Digital Video
            Lord of Digital Video
            • Jan 2002
            • 2317

            #6
            Filtering is the only other option. However, there are hundreds possibly thousands of different filters and/or combination of filters that can be used either in Virtualdub or AVISYNTH. You may want to describe in detail what the "quality" issue is (e.g. brightness? macroblocks?). Pay a visit to the avisynth page, and research some avisynth plugins in the doom9 forum.

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            • secotelli
              Gold Member
              Gold Member
              • Dec 2002
              • 100

              #7
              Originally posted by Batman
              Filtering is the only other option. However, there are hundreds possibly thousands of different filters and/or combination of filters that can be used either in Virtualdub or AVISYNTH. You may want to describe in detail what the "quality" issue is (e.g. brightness? macroblocks?). Pay a visit to the avisynth page, and research some avisynth plugins in the doom9 forum.

              i dont know how to explain. my english is not good enough for that.. but macroblocks sound like my problem.. not brightness for sure.. i dont know if its called pixels or not, but this things are soo huge.. i cant explaaaaainn huge squares all around the picture.. when scene moves, for example people are dancing, then picture looks like divided into squares.. if you understand my problem, congratulations... then you are really good....

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              • UncasMS
                Super Moderator
                • Nov 2001
                • 9047

                #8
                encode the movie from start and use a resolution of 576-640 but dont go much higher for a 1cd rip.

                i use lanczos resizer in all cases. maybe a smoother like convolution3d might help as well.

                Comment

                • secotelli
                  Gold Member
                  Gold Member
                  • Dec 2002
                  • 100

                  #9
                  Originally posted by UncasMS
                  encode the movie from start and use a resolution of 576-640 but dont go much higher for a 1cd rip.

                  i use lanczos resizer in all cases. maybe a smoother like convolution3d might help as well.
                  Uncas, I didnt encode this movie. I just downloaded it. If I could find the DVD of this movie I would have encoded of course.. and I am your student. You taught me how to encode movies, so there is no chance that my movies come out bad quality.. My master was sooo good.. But this situation is different... I downloaded a movie with e-mule, and wanna know if it is possible to make it a bit better than it is now...

                  Comment

                  • hemmi2
                    Junior Member
                    Junior Member
                    • Apr 2003
                    • 6

                    #10
                    NNNNNoooooooooooo

                    In the avi is an amount of information. And if u dont have more, then there isnt more.

                    Only thing that could work is a little cosmetics. Smoothen it. This wont lead to better pictures. But to less annoying pictures.

                    greetinx Hemmi

                    Comment

                    • Batman
                      Lord of Digital Video
                      Lord of Digital Video
                      • Jan 2002
                      • 2317

                      #11
                      Before filtering try using the FFDSHOW playback filter, there are some options there to remove deringing/macroblocks.

                      Comment

                      • secotelli
                        Gold Member
                        Gold Member
                        • Dec 2002
                        • 100

                        #12
                        Originally posted by Batman
                        FFDSHOW playback filter
                        what is that???

                        Comment

                        • secotelli
                          Gold Member
                          Gold Member
                          • Dec 2002
                          • 100

                          #13
                          Originally posted by hemmi2
                          NNNNNoooooooooooo

                          In the avi is an amount of information. And if u dont have more, then there isnt more.

                          Only thing that could work is a little cosmetics. Smoothen it. This wont lead to better pictures. But to less annoying pictures.

                          greetinx Hemmi

                          Thank you Hemmi, but smoothen with which program and how??

                          Comment

                          • UncasMS
                            Super Moderator
                            • Nov 2001
                            • 9047

                            #14
                            ffdshow is a alternative playback filter(pack)
                            Download ffdshow for free. ffdshow is DirectShow and VFW codec for decoding/encoding many video and audio formats, including DivX and XviD movies using libavcodec, xvid and other opensourced libraries with a rich set of postprocessing filters.


                            ffdshow is a very reliable playback filter and many people use no other filter for playback, since ffdshow does an excellent job.

                            smoothing can be done with noise/antinoise filters like *smoothers* or convolution3d or ......
                            there are numerous vd/avisynth filters for this task

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                            • secotelli
                              Gold Member
                              Gold Member
                              • Dec 2002
                              • 100

                              #15
                              thanks a lot for helping me guys... but i couldnt have figured it out how to install this ffdshow yet... i downloaded it, but i cant make it work...

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