I can play 1080p content on my MDD.

Discussion in 'PowerPC Macs' started by adcx64, Feb 14, 2012.

  1. adcx64 macrumors 65816

    adcx64

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    #1
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    Hey guys,
    I have no problems playing 1080p video on my G4, on the contrary to what a lot of people say. I download a .h264 AAC 1080p MP4 file from YouTube and it plays both in vlc an QuickTime with Perian!
     
  2. ThunderSnake macrumors 6502

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    #2
    Link to the file so we can all play! The last one that I tried on my MDD (for the purpose of tinkering with VLC settings) dropped about 8 or 9 frames per second. It was watchable, I guess, for a short YT video, but not tolerable for an actual movie.
     
  3. adcx64 thread starter macrumors 65816

    adcx64

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    #3
  4. ThunderSnake macrumors 6502

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    I tried the file and was able to play it with QT/Perian at about 16 to 20 fps (out of 29 fps). VLC choked on it for some reason.

    Are you saying that you're able to play this without any dropped frames? Maybe I want that video card back! :)
     
  5. Jethryn Freyman macrumors 68020

    Jethryn Freyman

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  6. Jethryn Freyman macrumors 68020

    Jethryn Freyman

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    OK, it's 3.5Mbit/second, and my dual 1.8GHz G5 can't play it (in VLC) without freezing a lot..... the only piece of hardware that you have that is superior to mine is the graphics card. My CPUs are nearly maxed out.
     
  7. Nova77 Guest

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    #7
    Thanks for posting an actual file. I will test it later on today (I'm on my laptop right now). However from what I've read, what you are saying sounds impossible. CorePlayer chokes on youtube HD 1080p (unless you turn off avc filter), and VLC just can't handle it without dropping frames. To me, it sounds like its fine for you when the video is watcheable.... and it sure is. I remember playing HD 1080p youtube on my MDD back when I had a stock 9000 pro... It worked, it was OK. But frames dropped every now and then. Now its almost OK for my taste, as my computer is able to play it 95 to 105% of original speed.

    For me... to handle HD 1080p means at least being able to play it at 120% of its original speed (preferably 150%) to make sure it NEVER drops a frame. Maybe I have high standards?
     
  8. adcx64 thread starter macrumors 65816

    adcx64

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    Weird.... maybe its the 9800? Maybe someone else with the card can verify?
     
  9. ThunderSnake macrumors 6502

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    #9
    I just tried it on my R9800 machine with about the same results as before (with a FireGL X3). It's watchable for a short clip, but it's not what I would want if watching an actual movie.
     
  10. adcx64 thread starter macrumors 65816

    adcx64

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    #10
    Im really curious as to why this works for me and no one else.. does window size make a difference?
     
  11. Nova77, Feb 15, 2012
    Last edited: Feb 15, 2012

    Nova77 Guest

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    #11
    Just tried it on my MDD (specs above in my signature). Same results as usual from youtube 1080p content. Almost lag-free with CorePlayer, but still not enough for my taste. Oddly enough VLC can't play it very well and quicktime with perian shows better results. If you are seeing what I see (with quicktime), I guess you don't have very high expectations for HD video on your computer.

    There is a reason why I didn't buy an 9800 .... It wasn't the best AGP card -- the 7800 GS is the second best one (first being the 7800 GT 512 MB). Ask any1 arround and you will hear similar input.

    Add to that I have 170 more mhz on each CPU, both of the same type as yours (7455B), cooled proprely (mod).

    I would be really curious to see some numbers to back what you are saying (frames per second played, or some kind of bench), because to me it sounds like you don't care about a little lag.

    ----------

    Do you play it in full screen? Because I do....
    Whats your screen resolution? I think screen res and windows size matters
     
  12. adcx64 thread starter macrumors 65816

    adcx64

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    #12

    Full screen on 1600*900

    how do i get vlc to tell me the framerate and QT?
     
  13. ThunderSnake macrumors 6502

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    #13
    Yeah, same here. Surprised me too.

    Is there that much of a difference for 2D apps, you think? I don't see much of a difference (if any) between my FireGL and R9800 in terms of 2D video frame rates--Even though the FireGL is clearly superior in 3D apps. I don't have much experience with nVidia cards, though.

    Oh well. 720p is plenty for me for now. Even if I could play it, I don't think I'd be willing to push my MDD that hard just to watch a movie.

    ----------

    QT: Window>Show Movie Inspector (while playing)

    VLC: Window>Media Information>Statistics (while playing)
     
  14. Nova77 Guest

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    #14

    Check out the openmark bench result thread. My results -->http://a3.l3-images.myspacecdn.com/images02/114/23cc9f7612aa429fa7ace9085b07b36e/l.jpg

    A guy with a dual 1.25 MDD plus an ATI 9800 -->http://www.petrocksoftware.com/images/random/openmark.png

    Btw, video and game benchs (check out Doom 3 mac benches for example) all favor the 7800 GS. It has more memory, it is newer and uses better technology. In fact, its one of the last AGP cards ever made.

    ----------

    1280x1024 here. It is harder to draw more horizontal lines or what?
     
  15. adcx64 thread starter macrumors 65816

    adcx64

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    #15
    26 fps in QT
    19 in VLC (it played better first time i tried xD)

    And 1600*900 is all my monitor can support Nova...
     
  16. Nova77 Guest

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    8-15 fps in Quicktime (20+ for text at the beginning....)
    ???? in VLC (can't get it working at all lol...)
    probably 27-29 with CorePlayer (don't know how to show info but as I said earlier bench shows more than 100% average playback speed)

    1280x1024, OS 10.5.8, Nvidia 7800 GS


    Little comment: What the ****??? Maybe has to do with Nvidia drivers being not quicktime friendly?
     
  17. adcx64 thread starter macrumors 65816

    adcx64

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    #17
    I would say that maybe its because im using a SATA drive, but your using an SSD. This is really odd!

    Also ThunderSnake, is this is a flashed PC card or a Mac edition?
     
  18. ThunderSnake, Feb 16, 2012
    Last edited: Feb 16, 2012

    ThunderSnake macrumors 6502

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    It's flashed. I flashed it myself, cleaned the GPU, applied some fresh thermal compound, and installed a new fan. Also, FYI, I removed R2 & R4 because I don't like messing with tape. I'm not good at it and I tend to forget about it until a piece of tape comes off in an AGP slot and screws things up for hours until I remember that tape might be involved. I'm done with tape. Period. Tape is for fascists. Hitler used tape. Anyway, I mention this because you'll need to bridge R2 & R4 if you ever want to run it in a G5 (I saw you mention recently that you were thinking about getting a G5).

    And WOW, yes, 26 fps is GOOD! I'm amazed. We've got to figure out what is different about your setup. I don't think it's the GPU, though. I'll test on my R9800 shortly.
     
  19. adcx64 thread starter macrumors 65816

    adcx64

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    #19
    Yeah I did notice the resistors were removed. When I got it, three small metal washers holding the hearsing onto the die fell off, but it still holds fine.


    Does the PC card have a higher core clock than the Mac one? This could be the explanation!
     
  20. ThunderSnake macrumors 6502

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    #20
    Oh, I'm sorry about that. It was fine that way when my friend was using it. I had to use retention parts from another card and the springs were not very tight so I used the washers to approximate the tension that it would normally have. I found that card in the bottom of a box of cables that I got at a thrift store for $4. The heatsink was hanging by a wire.

    I'm using a flashed card too.
     
  21. adcx64 thread starter macrumors 65816

    adcx64

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    Its no problem haha! It still holds on just fine. Its crazy what you find in a thrift store!

    Let me know your results on your machine!
     
  22. ThunderSnake macrumors 6502

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    #22
    Heh. I think I'm going backwards. I just upgraded Perian (been clicking the "remind me later" button for about 18 months) and disconnected my second display only to lose two frames per second. :confused:

    No difference between the R9800 and FireGL, though.
     
  23. Nova77 Guest

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    Duddeee SSD is only my boot drive, I'm using a 2 TB SATA for data... plus SSD is faster than HDD. Btw someone please solve this HD playback mystery!! loll
     
  24. Lord Blackadder macrumors G5

    Lord Blackadder

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    Not to be a party pooper, but I am baffled as to how you can get smooth 1080p video on any G4. Video decoding on these machines is all about CPU power, and the consensus seems to be that a G4 CPU (even a pair of them) cannot handle 1080p at any reasonable frame rate, with 720p performance being marginal at best, even on the fastest G4s. Even G5s can struggle with HD video playback, particularly 1080p at higher frame rates.

    More power to you if you got this working, but I have never heard that is was actually possible, anywhere, and my own experience with G4 towers and HD video has been entirely negative. I hope you forgive me if I remain a skeptic. ;)
     
  25. thorns macrumors member

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    #25
    The showstopper isn't resolution, but video bandwidth. 3,5MBit/sec isn't too much. DVDs have around 4MBit/s, typically. A typical 1080p BluRay Rip has around 20-30MBit/sec. So it's quite misleading to interpret a Youtube "1080p" vid as the typical 1080p case. Moreover, the GPU has nothing to do with decoding video. People seem to get Quartz acceleration mixed up with actual GPU decoding. The concept was first implemented in Windows machines in the ATI HD Series (after the X19xx series).
     

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