[FFmpeg-user] Cutdetection (dynamic threshold) and Fadedetection with ffmpeg

[Dave Rice]

On Jan 23, 2015, at 5:23 AM, Christoph Gerstbauer <christophgerstbauer at gmail.com> wrote:

>> The YDIF value in the signalstats filter could show this.
>> ffprobe -f lavfi movie=DETECT_CUTS.mov,signalstats -show_entries "frame_tags=lavfi.signalstats.YDIF” -of flat
>> 
>> Perhaps filter out lines where YDIF is higher than 10.
> 
> Hi, that does not work on my machine. (Win7)
> 
> Command line output:
> 
> C:\Users\gersti>ffprobe -f lavfi movie=C:\ffmpeg\bin\DETECT_CUTS.mov,signalstats -show_entries "frame_tags=lavfi.signalstats.YDIF” -of flat
> ffprobe version N-64919-ga613257 Copyright (c) 2007-2014 the FFmpeg developers
>  built on Jul 23 2014 00:35:22 with gcc 4.8.3 (GCC)
>  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libblu
> ray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
> b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
> enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
>  libavutil      52. 92.101 / 52. 92.101
>  libavcodec     55. 69.100 / 55. 69.100
>  libavformat    55. 48.101 / 55. 48.101
>  libavdevice    55. 13.102 / 55. 13.102
>  libavfilter     4. 11.102 /  4. 11.102
>  libswscale      2.  6.100 /  2.  6.100
>  libswresample   0. 19.100 /  0. 19.100
>  libpostproc    52.  3.100 / 52.  3.100
> [Parsed_movie_0 @ 0000000002b41ee0] Failed to avformat_open_input 'C'
> [lavfi @ 0000000002b34b20] Error initializing filter 'movie' with args 'C:ffmpegbinDETECT_CUTS.mov'
> movie=C:\ffmpeg\bin\DETECT_CUTS.mov,signalstats: No such file or directory

Is C:\ffmpeg\bin\DETECT_CUTS.mov an actual file on your machine?

Also your build is old. Do you see signalstats when running 'ffmpeg -filters'?
Dave Rice