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  1. I am having a very confusing and frustrating issue with getting videos to play back on Youtube without camera movement being choppy.

    Example: https://www.youtube.com/watch?v=ll0FxgP4vcg&feature=youtu.be

    The videos play smoothly on Premiere CS5, smoothly with only the occasional stutter on long track shots on WMV and VLC when compressed and streamed on Vimeo. However, on Youtube camera movement is very choppy on my computer. I have asked various people to watch the video both in Australia and overseas, with some finding it choppy like me and others saying it is smooth.

    What could possibly be causing this? Is it something I'm doing wrong in my settings, if so what? Is this an issue with Adobe flash interacting with computers/Internet/video card? If so, can I change something in my settings to stop the issue? I've tried so many tests, with no success.

    Video and test details below:

    Original footage: Recorded from a video game with graphics settings on high as individual jpeg images at 120 fps, 1280x720, sound clips mostly 44100 with some higher/lower.
    Original footage converted into uncompressed video with Lagarith codec on Virtualdub.
    Premiere sequence settings: 59.94 fps, 1280x720, square pixels, progressive, 48000hz, stereo

    I then have two copies that I encode using x264/AAC. One is a downloadable version at 59.94 fps, the other is downscaled to 29.97 fps for Youtube/Vimeo.

    GENERAL X264 RENDERING SETTINGS:

    Avisynth:

    AVISource("J:\Final Youtube Tests\Test 7\Test 7.avi", audio=false).AssumeFPS (30000,1001)
    #deinterlace
    #crop
    #resize
    #denoise
    ConvertToYV12(matrix="rec601")

    X264 Megui settings:

    http://imgur.com/Mg7vSV5
    http://imgur.com/YrERgbM
    http://imgur.com/ZpzH5qb
    http://imgur.com/iEA0Lzg
    http://imgur.com/BehBhVj

    TESTS:

    Rendered in the following formats, but all have provided same choppy Youtube playback:
    • x264/AAC mp4 through Premiere CS5
    • WMV through Premiere CS5
    • Uncompressed render from Premiere CS5 and x264/AAC through Avisynth/Megui

    Experimented with many different settings, but all have provided same choppy Youtube playback:
    • Rendering new footage out at 30 fps instead of 120/sequence settings/export all at 30 fps
    • Putting a 59.94 fps version on Youtube instead of downscaling to 29.97 fps
    • x264 levels (3.2 and 4.1)
    • 300 max keyframe interval, 30 minimum keyframe interval GOP settings
    • 0 vbv buffsize and 0 vbv maxrate
    • 78125 vbv bufsize and 62500 vbv maxrate

    You can see my most recent tests on my Youtube channel (encoder details in 'About' section of most of the vids):

    https://www.youtube.com/channel/UCfcDkRl0ftLBO-ErMcSCbTg

    Very frustrated and no clue how to fix this issue. I can provide more details if needed.
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  2. I'm a MEGA Super Moderator Baldrick's Avatar
    Join Date: Aug 2000
    Location: Sweden
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    The example is smooth here. I'm using Chrome's built in flash player.

    Have you tried download the youtube video and try play in vlc? Just too see how it plays.
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  3. Originally Posted by Baldrick View Post
    The example is smooth here. I'm using Chrome's built in flash player.

    Have you tried download the youtube video and try play in vlc? Just too see how it plays.
    Thanks for the reminder. I forgot to add in my first post that if I stream the video through VLC or download and play in VLC it is smooth, which has only added to my confusion as you can imagine.

    I'm using Firefox Adobe Flash. I've tried in Internet Explorer but the camera movement still stutters/jerks.

    I downloaded Google Chrome and the video plays smoother, although there is still jittery playback in parts of the camera pan on the example video.
    Last edited by Skysaberer; 9th Apr 2014 at 04:49.
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  4. Member
    Join Date: Jul 2007
    Location: England
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    Originally Posted by Skysaberer View Post
    on Youtube camera movement is very choppy on my computer.
    It seemed to play OK for me.

    I'd be more concerned about the character who went up those 3 steps - it looked like he was sliding along rather than walking.
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  5. Originally Posted by mike20021969 View Post
    Originally Posted by Skysaberer View Post
    on Youtube camera movement is very choppy on my computer.
    It seemed to play OK for me.

    I'd be more concerned about the character who went up those 3 steps - it looked like he was sliding along rather than walking.
    That's game-side. It's an old game from 2003.
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