VideoHelp Forum

Our website is made possible by displaying online advertisements to our visitors. Consider supporting us by disable your adblocker or Try ConvertXtoDVD and convert all your movies to DVD. Free trial ! :)
+ Reply to Thread
Results 1 to 4 of 4
Thread
  1. Member
    Join Date
    Dec 2013
    Location
    United States
    Search Comp PM
    I've been using the same saved settings for a year, but for some weird reason, they suddenly no longer work. They result in this:

    Click image for larger version

Name:	why.jpg
Views:	351
Size:	45.4 KB
ID:	21542

    Here are my settings:

    ffmpegX Preset File
    _version=14


    _encoder=x264
    _video=true
    _videoformat=21
    _width=640
    _height=352
    _ratio=6
    _videobitrate=325
    _framerate=NTSC FILM (23.976)


    _iframes=240
    _minq=5
    _maxq=30
    _level=7
    _cabac=false
    _bframes=false
    _twopass=true
    _constant=true
    _motionestimation=3
    _i4x4=false
    _trellis=false
    _profile=2_qtdecode=false
    _denoise=false
    _deinterlace=true
    _dering=false
    _deblock=true
    _brightness=0
    _contrast=0


    _croptop=0
    _cropbottom=0
    _cropleft=0
    _cropright=0


    _audio=true
    _audioformat=6
    _audiobitrate=96
    _audiosampling=24000
    _audiogain=0
    _audiochannels=1
    _audiomode=0
    _invertmap=false


    I'd appreciate any insight into why this is happening. This happened with new files, I'm in the process of testing an old file to make sure it's just the new files.

    As far as I know, the source files are exactly the same, when they are exported and viewed in both QT7 Pro and FFMPEGX, the settings appear the same: DV YUV411 720x480 16:9 NTSC Millions 16-bit Integer (Little Endian), Stereo, 48.000 kHz 30.31



    As far as I know, nothing has changed on my system. The only thing I've added to the computer is REMO Repair MOV, which I was using to alter a separate video file recorded on another computer with Media Express from Blackmagic.

    UPDATE:

    I tested an old file with these settings, and it came out as expected. So it's something about these files. Note that at the top, there are motion graphics that have a lot of blue and change rabidly - basically a moving video wall.
    Last edited by INDHD; 3rd Dec 2013 at 17:28. Reason: updated info
    Quote Quote  
  2. Explorer Case's Avatar
    Join Date
    Feb 2004
    Location
    Middle Earth
    Search Comp PM
    Maybe something is off how the color is encoded and how it is registered (and thus interpreted), e.g. the chroma subsampling. If these differ, weird stuff can happen.
    By taking a closer look at your image, I found that some (not all) color is doubled horizontally. That is what those red patches are, which wasn't clear to me at first sight.
    I tried to extract just that doubled color. Below is an enhanced (manipulated) image of that. It seems that flesh tones are most affected.
    I'm not sure how that can happen. I haven't been able to replicate this issue. It seem indeed specific to this DV file, and/or its creation process.
    Quote Quote  
  3. Member
    Join Date
    Dec 2013
    Location
    United States
    Search Comp PM
    That's really strange, then. As far as I know, I exported that file the same way I always do. But... I did start with a 720p sequence in FCP, which the software automatically switch to match the source video. Maybe that caused it. I'll do a test and see.
    Quote Quote  
  4. Member
    Join Date
    Dec 2013
    Location
    United States
    Search Comp PM
    Ok, I sort of found the solution. It was definitely something to do with starting with an HD 720p sequence, then allowing it to be altered to "match" the source videos format, rather than starting with a DV sequence. When I place in a preset DV sequence, it all works fine.
    Quote Quote  



Similar Threads