Is VisualHub seriously the best in converting AVI to MP4?

Discussion in 'Apple TV and Home Theater' started by je1ani, Nov 27, 2007.

  1. macrumors 6502

    Joined:
    Sep 19, 2007
    #1
    I mean seriously isn't there something a little better? The quality is really rediculous and this setting was on "Go Nuts."

    [​IMG]

    I am going to try a little something new.. I am using the advance feature and putting in the original file size in MB and try "Two Pass." Will this help? Thanks!
     
  2. macrumors regular

    Joined:
    Mar 7, 2006
    Location:
    UK
    #2
    I'm using the trial version and so far unimpressed with its attempt to convert .avi to .mp4

    Very blocky on low res stuff on Go Nuts settings with 2-pass. Just about to test a HD 720 mkv conversion
     
  3. Administrator emeritus

    xUKHCx

    Joined:
    Jan 15, 2006
    Location:
    The Kop
    #3
    Is that Machu Picchu on your desktop?
     
  4. macrumors regular

    Joined:
    May 7, 2006
    #4
    I have found VH to be better than QT Pro mainly because of the level of control VH gives you. All you can do in QT Pro is select the AppleTV option and cross your fingers. Unless you want to get into a custom mp4 setting, that is.

    For .mkv files, VH is darn near the only solution on a mac. VLC limits you to a 3072 bitrate or something like that, and FFMPEGX isn't user-friendly enough for my taste.
     
  5. macrumors 68020

    daveL

    Joined:
    Jun 18, 2003
    Location:
    Montana
    #5
    Are you selecting H.264 encoding?
     
  6. macrumors 68000

    Mindflux

    Joined:
    Oct 20, 2007
    Location:
    Austin
    #6
    First: You are transcoding. You will *ALWAYS* lose quality moving from one lossy format (DivX) to another lossy format (MP4).

    This is like converting an mp3 to an ogg, or even an mp3 to another bitrate mp3. You lose data, it's data compression/compromise.

    I wouldn't ever expect to take an AVI, toss it through VH or anything else to convert it to any other format other than VOB, which you would NOT lose any more quality, but you also do not gain quality.
     
  7. macrumors 6502a

    mr_matalino

    Joined:
    Oct 14, 2005
    #7
    It sure looks like it.
     
  8. macrumors 68000

    dextertangocci

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    Apr 2, 2006
    Location:
    Cape Town, South Africa
    #8
    Yes. I swear by it:)
     
  9. thread starter macrumors 6502

    Joined:
    Sep 19, 2007
    #9
    lol yes someone was on my computer and messed with the screensaved and wallpaper
     
  10. macrumors 6502

    Joined:
    Jul 25, 2006
    #10
    Don't use 2 pass encoding. I would have thought that that would actually make the quality better, but it doesn't...

    And definitely make sure you have h.264 selected.
     
  11. macrumors regular

    RubberChicken

    Joined:
    Sep 16, 2003
    Location:
    Australia
    #11
    I usually use High setting for transcoding and make sure you set H.264. Go Nuts should not be necessary in my experience, and may even increase your file size. Your sample shows a much greater loss of quality than I have seen with my conversions. I have noticed the difference in gamma between Standard and High, similar to your sample, with standard showing darker than the original.
     
  12. 7on
    macrumors 601

    7on

    Joined:
    Nov 9, 2003
    Location:
    Dress Rosa
    #12
    I use ffmpeg
     
  13. macrumors 604

    gkarris

    Joined:
    Dec 31, 2004
    Location:
    "No escape from Reality..."
    #13
    Comparing the two looks like your output res is lower...

    Use the custom settings if you are picky about that stuff...
     
  14. macrumors 6502

    Joined:
    Jan 7, 2004
    #14
    No matter what program you use, you are going to loose some quality. But I am still very happy with visual hub. Until AppleTV can accept higher bitrates, you will lose some quality from the source. But it still looks great on a hi-def TV.
    [​IMG]
     
  15. macrumors newbie

    Joined:
    Jun 29, 2007
    #15
    The quality loss you are seeing here is becuase Quicktime plays MP4 files alot DARKER than other players. Open up your original DivX in VLC side by side with your MP4 in VLC and the quality will be alot more similar.

    Background: Quicktime has a bug when decoding MP4 files and causes the output to be alot darker than what it should.

    Keep in mind - your apple TV uses quicktime to play the files aswell :p
     
  16. macrumors 6502

    Joined:
    Jan 7, 2004
    #16
    [​IMG]
    here is a screen from VLC. That is weird that quicktime darkens the image like that. They don't seem darker when playing through the appleTV....
     
  17. macrumors 6502a

    Joined:
    Aug 13, 2003
    Location:
    Thunder Bay, ON
    #17
    Just choose passthrough for video so it doesn't re-encode, it should be very quick too.
     
  18. macrumors regular

    Joined:
    May 7, 2006
    #18
    I wish it was so easy...
     
  19. macrumors 6502a

    Joined:
    Aug 13, 2003
    Location:
    Thunder Bay, ON
    #19
    Here's the settings I use to convert an avi (XviD mpeg4 video & 5.1 ac3 audio) that I made in Handbrake before for my Philips DivX DVD set top player.

    The video is passed through and the audio encoded to stereo aac for playback on an iPhone.

    [​IMG]
     
  20. macrumors 68030

    Joined:
    Dec 17, 2003
    Location:
    Los Angeles, CA
    #20
    This works because Xvid is MPEG4 compliant, or vice versa or whatever, right? So you only have to re-encode the audio, and put the whole thing in a new container.

    I had always wondered if this was possible, I guess it depends on how the original video was encoded. I am gonna try this with a random vid right now...
     
  21. 7on
    macrumors 601

    7on

    Joined:
    Nov 9, 2003
    Location:
    Dress Rosa
    #21
    Did this work?
     
  22. macrumors 68030

    Joined:
    Dec 17, 2003
    Location:
    Los Angeles, CA
    #22
    No. I think there are too many different encoding settings and other variables, so for any given clip may it will work, maybe it won't.

    For example, there are different profiles for H.264 encoding, and the iPods will play certain kinds (the more basic settings.)
     
  23. macrumors regular

    Joined:
    Sep 28, 2004
    #23
    Hiya there.

    I'm using iSquint at the moment, and I too found the AVI -> MP4 conversion to be kinda poor...

    But I'm on an ibook G4 1.33, so I didn't use the H.264 setting, because it jsut seemed to take to long. But like OP, even using 'Go nuts', the result was poor...

    So are people saying that if I use a 'High' setting and H.264, I'll have something that basically looks like my source?

    Because all I want is the quality to be kept the same... nothing more!
     
  24. macrumors 68000

    Joined:
    Jan 26, 2006
    Location:
    Whitehouse, OH
    #24
    The quality will never be the same... at the very least you are converting between two lossy formats. This is even true using Handbrake to go from DVD -> MPEG-4.
     
  25. macrumors 68030

    Joined:
    Dec 17, 2003
    Location:
    Los Angeles, CA
    #25
    Select 2-pass encoding, that will at least help minimize the damage.

    H.264 is better, but probably not worth the wait on a G4.
     

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