>> On Tuesday, September 2, 2014 2:21 AM, Damian Głodny <[email protected]> >> wrote:
> > Hi, Arno. Thank you for advice, I will check it. I also found some > > information >> about converting videos from 29.970 to 23.976: >> >> https://documentation.apple.com/en/finalcutpro/usermanual/index.html#chapter=E%26section=2%26tasks=true >> >> In document above you can find some techniques to convert your videos. There >> are >> methods for conversion from 29.970 to 23.976 called: >> - 3:2 Pulldown Removal, >> - 2:3:3:2 Pulldown Removal >> - Duplicate Frame Removal (bad) >> >> Is it possible to use them in FFMPEG? >Yes but it won't help you. These methods are for undoing telecined material. >That is material that was originally 24 fps and was "telecined" into 30 fps. >They will not work on your material. There are in >ffmpeg at "pullup" and >"fieldmatch." I think you are going in circles. >ffmpeg cannot do what you want, unless someone adds this "optical flow" stuff, >you are out of luck in using ffmpeg directly. I hope this is not "bad form" to offer an alternative to ffmpeg on this mailing list, but in case it helps The ffmpeg fork, ffmbc, purports to have an interpolating frame rate filter: @section framerate Change the frame rate by interpolating new video output frames from the source frames. This filter is not designed to function correctly with interlaced media. If you wish to change the frame rate of interlaced media then you are required to deinterlace before this filter and re-interlace after this filter. This filter accepts options in the form of @var{key}=@var{value} pairs separated by ":". Alternatively, the @var{fps} option can be specified as a value alone, optionally followed by a ":" and further ":" separated @var{key}=@var{value} pairs. A description of the accepted options follows. @table @option @item fps Specify the output frames per second. This option can also be specified as a value alone. The default is @code{50}. @item interp_start Specify the start of a range where the output frame will be created as a linear interpolation of two frames. The range is [@code{0}-@code{255}], the default is @code{15}. @item interp_end Specify the end of a range where the output frame will be created as a linear interpolation of two frames. The range is [@code{0}-@code{255}], the default is @code{240}. @item scene Specify the level at which a scene change is detected as a value between 0 and 100 to indicate a new scene; a low value reflects a low probability for the current frame to introduce a new scene, while a higher value means the current frame is more likely to be one. The default is @code{7}. @item flags Specify flags influencing the filter process. Available value for @var{flags} is: @table @option @item scene_change_detect, scd Enable scene change detection using the value of the option @var{scene}. This flag is enabled by default. The broadcast (ie non free) way would be to look at the Software Alchemist product. I don't know how much you have to reprocess and what your budget is, but Snell now do an Alchemist On demand which might be suitable: http://www.snellgroup.com/products/conversion-and-restoration/standards-conversion/alchemist-od http://www.snellondemand.com/ Andy Young ---------------------------- http://www.bbc.co.uk This e-mail (and any attachments) is confidential and may contain personal views which are not the views of the BBC unless specifically stated. If you have received it in error, please delete it from your system. Do not use, copy or disclose the information in any way nor act in reliance on it and notify the sender immediately. Please note that the BBC monitors e-mails sent or received. Further communication will signify your consent to this. ---------------------------- _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
