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image smoothness problem

Last post 12-21-2019, 3:39 by jjn. 5 replies.
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  •  12-17-2019, 8:40 792423

    image smoothness problem

    I have a problem with the pinnacle file format. I mainly shoot a JVC camera that records full hd 25fps (mts) but I also have a full hd 30fps phone (mp4). if I fold the entire film from the trip and save it as MPEG-4 1080/25, the film fragments that were added from the phone look as if they are stuck. files from the phone played on the TV or phone go smoothly.I still have a sports camera that records in 60fps (mov) and there is no problem.
  •  12-18-2019, 2:57 792464 in reply to 792423

    Re: image smoothness problem

    These phone files, have you checked the frame rate in MediaInfo to check that they aren't in fact variable frame rate? I number of phones do that in low light conditions.
  •  12-18-2019, 13:36 792492 in reply to 792464

    Re: image smoothness problem

    Attachment: mediainfo.jpg
    I have two types of files: 1. MTS from a JVC 1080 / 25fps camera, 2. MP4 from a 1080 / 30fps phone.  I would like to combine these two types of files into one, e.g. MPEG-4 1080. How to do it?  if I do MPEG-4 1080/25 then the picture from the phone stutters and if I do MPEG-4 1080/30 the picture from JVC stutters.
  •  12-18-2019, 16:57 792508 in reply to 792492

    Re: image smoothness problem

    There are two fundamental problems here. One is that you can't acually mix frame rates in Studio without getting a stutter from one ot the other - either one has to add frames or the other has to subtract them. This will lead to a 5th of a second "tick" with is notiable, but regular.

    The second is that your phome isn't even shooting a fixed frame rate. it clearly says "Variable". So the stutters are going to be random and even more objectionable.

    Many phones and cameras can change their frame rate, and you might be able to force the camera to stop using a variable frame rate, but if you shoot at different frame rates, smoothing out the stutters will require software that extroplates information to make up the extra frames needed, of changes the playback speed. You could do the later in Studio, but not the former.

  •  12-21-2019, 2:47 792607 in reply to 792508

    Re: image smoothness problem

    OKAY.  indeed the problem is with the number of frames.  now my question: what program to prepare files for processing in Pinnacle?  I don't want to give up videos recorded by telephones.  How can I minimize this image retention?
  •  12-21-2019, 3:39 792608 in reply to 792607

    Re: image smoothness problem

    Handbrake is the simplest transcoder that is free and reliable. Quality is excelent.

    https://handbrake.fr/

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