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Thread: Corel VideoStudio 4 - poor render quality problem

  1. #1
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    Default Corel VideoStudio 4 - poor render quality problem

    Hello everyone,

    Im using trial version of VideoStudio (version 14.1.0.150) I faced a big problem with render quality. For testing purposes I took small video recorded by Panasonic SD90 camera - pies.m2ts - (link to samples at the end of this post) As you can see, original raw file has perfect quality everything is sharp and no pixels can be spotted)

    My changes done in VideoStudio are simple. I just divided video into two parts and added simple transition effect between them. Finally I created video using "same as in first video" preferences. I turned off smart rendering. In main VideoStudio option I just disabled color filter. Final video (pies_corel.m2ts) quality is poor, pixels are everywhere, its maily visible on grass...

    Am i doing something wrong? I thought setting "same as in first video" will use parameters equal to original file... I really like VideoStudio, but render quality is non acceptable :( Can I do something about it?

    Samples can be downloaded here:
    filmy.zip (38,80 MB) - uploaded.to

    Regards,
    Kuba

    PS:
    When Im using "HD writer" - software added to camera, render quality is awesome, It's same as original even with transition effects.
    But I prefer VideoStudio and its features... please help me with this issue.

  2. #2
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    Have you changed the bit rate too low, this can be why you get pixelation. Have you reduced the resolution (size) from the original. I haven't had chance to see what the footage looks like, as the download is quite slow.

    I can see that there is a slight pixelation in the dark areas but it's not too bad. The bit rate has been reduced but not by much. Have you altered from interlaced to progressive or vice versa. The best way to keep the best quality is to keep things as close to the original as possible in all ways.
    Last edited by Midnight Blue; 01-31-2012 at 05:07 PM.

  3. #3
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    Hello,

    Faster mirror for movies:
    filmy.zip - 4shared.com - online file sharing and storage - download

    Basically option I used should copy all properties from original movie.

    Ill paste media info logs.

    Original:
    Code:
    GeneralID                                       : 0 (0x0)
    Complete name                            : C:\Users\Kuba\Desktop\pies.m2ts
    Format                                   : BDAV
    Format/Info                              : Blu-ray Video
    File size                                : 21.6 MiB
    Duration                                 : 10s 709ms
    Overall bit rate mode                    : Variable
    Overall bit rate                         : 16.9 Mbps
    Maximum Overall bit rate                 : 18.0 Mbps
    
    
    Video
    ID                                       : 4113 (0x1011)
    Menu ID                                  : 1 (0x1)
    Format                                   : AVC
    Format/Info                              : Advanced Video Codec
    Format profile                           : High@L4.0
    Format settings, CABAC                   : Yes
    Format settings, ReFrames                : 4 frames
    Format settings, GOP                     : M=3, N=12
    Codec ID                                 : 27
    Duration                                 : 10s 280ms
    Bit rate mode                            : Variable
    Bit rate                                 : 16.0 Mbps
    Maximum bit rate                         : 16.8 Mbps
    Width                                    : 1 920 pixels
    Height                                   : 1 080 pixels
    Display aspect ratio                     : 16:9
    Frame rate                               : 25.000 fps
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Interlaced
    Scan order                               : Top Field First
    Bits/(Pixel*Frame)                       : 0.309
    Stream size                              : 19.6 MiB (91%)
    
    
    Audio
    ID                                       : 4352 (0x1100)
    Menu ID                                  : 1 (0x1)
    Format                                   : AC-3
    Format/Info                              : Audio Coding 3
    Mode extension                           : CM (complete main)
    Codec ID                                 : 129
    Duration                                 : 10s 368ms
    Bit rate mode                            : Constant
    Bit rate                                 : 256 Kbps
    Channel(s)                               : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 48.0 KHz
    Bit depth                                : 16 bits
    Compression mode                         : Lossy
    Delay relative to video                  : -80ms
    Stream size                              : 324 KiB (1%)

    Render:
    Code:
    General
    ID                                       : 0 (0x0)
    Complete name                            : C:\Users\Kuba\Desktop\pies_corel.m2ts
    Format                                   : BDAV
    Format/Info                              : Blu-ray Video
    File size                                : 17.7 MiB
    Duration                                 : 9s 277ms
    Overall bit rate mode                    : Variable
    Overall bit rate                         : 16.0 Mbps
    Maximum Overall bit rate                 : 21.3 Mbps
    
    
    Video
    ID                                       : 4113 (0x1011)
    Menu ID                                  : 1 (0x1)
    Format                                   : AVC
    Format/Info                              : Advanced Video Codec
    Format profile                           : High@L4.0
    Format settings, CABAC                   : Yes
    Format settings, ReFrames                : 2 frames
    Format settings, GOP                     : M=3, N=12
    Codec ID                                 : 27
    Duration                                 : 9s 360ms
    Bit rate mode                            : Variable
    Bit rate                                 : 15.1 Mbps
    Maximum bit rate                         : 16.8 Mbps
    Width                                    : 1 920 pixels
    Height                                   : 1 080 pixels
    Display aspect ratio                     : 16:9
    Frame rate                               : 25.000 fps
    Standard                                 : PAL
    Color space                              : YUV
    Chroma subsampling                       : 4:2:0
    Bit depth                                : 8 bits
    Scan type                                : Interlaced
    Scan order                               : Top Field First
    Bits/(Pixel*Frame)                       : 0.291
    Stream size                              : 16.9 MiB (95%)
    Color primaries                          : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
    Transfer characteristics                 : BT.709-5, BT.1361
    Matrix coefficients                      : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177
    
    
    Audio
    ID                                       : 4352 (0x1100)
    Menu ID                                  : 1 (0x1)
    Format                                   : AC-3
    Format/Info                              : Audio Coding 3
    Mode extension                           : CM (complete main)
    Codec ID                                 : 129
    Duration                                 : 9s 344ms
    Bit rate mode                            : Constant
    Bit rate                                 : 256 Kbps
    Channel(s)                               : 2 channels
    Channel positions                        : Front: L R
    Sampling rate                            : 48.0 KHz
    Bit depth                                : 16 bits
    Compression mode                         : Lossy
    Stream size                              : 292 KiB (2%)
    Last edited by saperos; 01-31-2012 at 06:17 PM.

  4. #4
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    Like I said you have dropped your bit rate a little. From 16Mbps to 15.1Mbps which isn't a lot but the drop in image quality is not much. Apart from that you have pretty much matched the original footage well. The only other way to try and have a better quality image is to use a lossless format but this would give you huge files AND you may not even be able to play them on your computer.

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    TBH I do not know how to manually change those properties in VideoStudio x4... How can I approach this lossless format? I think my computer will handle that

  6. #6
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    I can't walk you through it as I don't know your software. Usually there is an option for a lossless .avi format. If you do some looking around you might find it.

  7. #7
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    To be honest Im just testing trial versions to find best software... Can you please suggest me something better than corel's video studio in this price range?

  8. #8
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    I usually recommend Sony Vegas Studio Platinum. BUT I think it's good to try out a few different ones to see which suites you best.

  9. #9
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    Hello again,

    Im testing Sony Vegas 11 platinum and Im impressed how good the render looks like on default settings. As a vegas user, can you tell me which settings should i use (based on media info log) so that my render has best possible quality?

    Regards,
    Kuba

  10. #10
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    I like the Main Concept mpeg2 format. Others like different ones like the .wmv or the .mp4. If you stick to matching the original media as close as possible so choose a 1080p template and make sure the frame rate is 25fps. You should be ok.

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