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Blu-ray Image Quality

Last post 10-09-2019, 16:31 by slexpress. 8 replies.
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  •  10-09-2019, 11:12 789451

    Blu-ray Image Quality

    My timeline contains video, photos and music. Most of the video was shot at 24 mb/s but not all. My timeline settings are HD 1920x1080 at 30p. When I export the entire timeline as a blu-ray disc image at a custom bitrate of 24 mb/s and the image quality at balanced, the resulting image is at around 15 mb/s. However, if I just export a section of the video that was shot at 24 mb/s with the same blu-ray disc settings the resulting image is at 24 mb/s. I am sure there is some technical reason for this but I don't understand why the entire timeline image doesn't come out at 24 mb/s when the export setting is at 24 mb/s. Is it because some of the video is below 24 mb/s? Does someone know? Thanks.
  •  10-09-2019, 12:01 789453 in reply to 789451

    Re: Blu-ray Image Quality

    What version of studio are you using?
  •  10-09-2019, 12:35 789454 in reply to 789453

    Re: Blu-ray Image Quality

    Pinnacle Studio 23 Ultimate Ver 23.1.0.231
  •  10-09-2019, 13:47 789457 in reply to 789454

    Re: Blu-ray Image Quality

    Sorry, I can't help you with that.  I haven't needed to burn a PS23 project to a Blu-Ray.  I burn my PS21.5 project Blu-Rays in PS18.  It just works better.

    Isn't there a best quality setting?  Why are you limiting the bit rate?

  •  10-09-2019, 15:24 789461 in reply to 789457

    Re: Blu-ray Image Quality

    My guess : the bitrate setting defines max bitrate.

    It has more impact on short videos than on long videos.

  •  10-09-2019, 15:34 789462 in reply to 789457

    Re: Blu-ray Image Quality

    For some reason when I previously used "Best Quality" for image quality the program hung-up and never finished. However I did set the export setting to 40 mb/s, the highest level, and the resulting image was at 24 mb/s. Not sure if this is a coincidence. The reason I used a 24 mb/s setting is the maximum bitrate on the timeline is 24 mb/s and I assumed the program would create an image at the bitrate designated. I didn't see a need to create an image at a higher bitrate than the maximum on the timeline.
  •  10-09-2019, 16:04 789463 in reply to 789462

    Re: Blu-ray Image Quality

    The hang up issue is why I use PS18 for Blu-Rays.  PS18 makes Blu-Ray images perfectly.  I export my project to a 100mbps MTS file in PS21.5 & PS23.  I then place this file on the timeline of PS18 and burn a Blu-Ray image. Works every time and looks great.

    I always leave the bitrate at 100mbps.  PS can't make something from nothing, so if your source clip is 24mbps, that is what the output will be.  PS doesn't up convert or make something from nothing.  Any portions of your timeline that have overlays, transitions, or effects, that are rendered at the time of export could be 100mbps, but very unlikely. Most of the time 1080 30fps are rendered around 40-45mbps max at 30 frames per second.  From my experience, most Blu-Ray players will play up to about 55-60mbps without skipping.  3D and high end Blu-Ray players will play above 65mbps without skipping.  4k 60fps MP4's will only play on a TV without stuttering from a buffered USB thumb drive or SSD connected to a TV with a USB 3.1 adapter.

  •  10-09-2019, 16:30 789464 in reply to 789463

    Re: Blu-ray Image Quality

    acsscott:

    The hang up issue is why I use PS18 for Blu-Rays.  PS18 makes Blu-Ray images perfectly.  I export my project to a 100mbps MTS file in PS21.5 & PS23.  I then place this file on the timeline of PS18 and burn a Blu-Ray image. Works every time and looks great.

    I always leave the bitrate at 100mbps.  PS can't make something from nothing, so if your source clip is 24mbps, that is what the output will be.  PS doesn't up convert or make something from nothing.  Any portions of your timeline that have overlays, transitions, or effects, that are rendered at the time of export could be 100mbps, but very unlikely. Most of the time 1080 30fps are rendered around 40-45mbps max at 30 frames per second.  From my experience, most Blu-Ray players will play up to about 55-60mbps without skipping.  3D and high end Blu-Ray players will play above 65mbps without skipping.  4k 60fps MP4's will only play on a TV without stuttering from a buffered USB thumb drive or SSD connected to a TV with a USB 3.1 adapter.

    Thanks........Smile

  •  10-09-2019, 16:31 789465 in reply to 789461

    Re: Blu-ray Image Quality

    saby:

    My guess : the bitrate setting defines max bitrate.

    It has more impact on short videos than on long videos.

    Thanks........Smile

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