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  • How to encode 1080p mpeg2 at 60fps on a mac?

    Posted by Eric Suquet on June 9, 2011 at 3:40 pm

    Hello,

    I need to output an mpeg2 file at 1920×1080 progressive at 60fps. All the software I’ve tried so far either forces it into 30fps or interlaces it. I’m on a mac and don’t have access to a PC. The bit rate needs to be on the high side as well, around 25mb.

    Anyone have any suggestions?

    -Eric

    Craig Seeman replied 13 years ago 2 Members · 14 Replies
  • 14 Replies
  • Craig Seeman

    June 9, 2011 at 4:19 pm

    I’m curious why you have this need. Knowing the purpose of the target might help find a solution.
    Why MPEG-2? Is this a Program or Transport Stream for broadcast?
    Is there some device that can use 1080p60 MPEG-2 playback?

  • Eric Suquet

    June 9, 2011 at 4:26 pm

    A client has requested it for a large display at a trade show of some sort. It needs to be 60fps because it’s an animation that has vertical lines moving horizontally. At 30fps (regardless of codec) the lines stutter and don’t look good. I’ve inquired about them being able to use another codec, but in case they cannot, I’d love to find a way to do 60fps in mpeg2.

  • Craig Seeman

    June 9, 2011 at 5:06 pm

    [Eric Suquet] “It needs to be 60fps because it’s an animation that has vertical lines moving horizontally”

    OK so they need very high temporal resolution. Are you trying to create a Program Stream or Transport Stream, which or either?

    I’m not sure what settings or software you’ve tried since you only make a sweeping comment about “all the software” you’ve tried. That’s not much to go on. There’s no point asking you to try software and settings you’ve already attempted but for all I know you’re not using the right settings. You really need to provide information. We don’t what software you have for example.

  • Eric Suquet

    June 9, 2011 at 5:14 pm

    OK so they need very high temporal resolution. Are you trying to create a Program Stream or Transport Stream, which or either?

    Program stream.

    I’m not sure what settings or software you’ve tried since you only make a sweeping comment about “all the software” you’ve tried. That’s not much to go on. There’s no point asking you to try software and settings you’ve already attempted but for all I know you’re not using the right settings. You really need to provide information. We don’t what software you have for example.

    Software that I’ve tried:
    After Effects
    Adobe Media Encoder
    Squeeze
    Quicktime Pro
    Compressor
    iVideo Compressor

    None of these allow me to encode with the settings that I mentioned.

  • Craig Seeman

    June 9, 2011 at 5:28 pm

    Thanks. Those are important details. I tend to use Telestream Episode myself. Compressor is severely limited. I’d would think Squeeze 7 would be very flexible but I can’t speak first hand.

    Download the free trial of Episode 6.1
    Duplicate the Program Stream MPEG2 1080i60 20Mbit 16×9 preset.
    Under Frame Rate filter change from 29.97 to 59.94
    I assume your source is already 1080p60 Progressive so you may not need to do any other changes.

    After doing the test encode check the results in MediInfo or VideoSpec. It will tell you if the file is 59.94 Progressive.

  • Eric Suquet

    June 9, 2011 at 5:52 pm

    Thanks for the suggestion. Followed your instructions to a t, and it still conformed it to 30fps. I’d rather not spend the money on the software even if it DID work though. My copy of sorenson is out of date, so I’m going to update it and try that. If you have any other suggestions, I would appreciate it.

  • Craig Seeman

    June 9, 2011 at 5:59 pm

    [Eric Suquet] “Followed your instructions to a t, and it still conformed it to 30fps”

    How did you confirm the frame rate?
    Please check in one of the two programs I recommended.
    In fact you should check your source in those apps as well to ensure it’s actually 59.94p

  • Eric Suquet

    June 9, 2011 at 6:12 pm

    I confirmed the framerate in quicktime. I also can SEE that it’s not 60 since the lines stutter. I just checked it videospec to be safe, and it also says that it’s 29.97. I know the settings were correct since the file name contains 1080i60.

    My original file is also at 60.

  • Eric Suquet

    June 9, 2011 at 6:17 pm

    It’s very odd. I just upgraded squeeze. There is a preset that SAYS 1080i60, but when I try to edit the preset it only gives 29.97 as an option.

  • Craig Seeman

    June 9, 2011 at 6:35 pm

    60i is 29.97.
    60i is 59.94 interlaced FIELDS which is 29.97 FRAMES.

    In Episode enable the Field Order filter and set it to Derive from File Format and Same as Source. If Squeeze has something similar try that as well. You want to ensure progressive frames stay progressive.

    I would say 1080p60 is rare but these days I believe a couple of the large sensor cameras, Panasonic AF100, Sony FS100 shoot that I believe. I’m sure the Sony does. I do think there’s a need to support this.

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