end of video freeze in preview and after export even if the time goes on

[EsquicheurLibre]

I create a stop motion video with ffmpeg
When I import the video the end freeze while the time is still running

I have import a video from my phone. When applied time effect (acceleration) end of movie freeze also with the time running

I have tried version 2.5.0 and 2.5.1 and still made the same.

Both videos play well with ffplay
One of the video give a segmentation error when playing with melt

Architecture (64 bits or 32 bits) : 64 bits
Operating System & version: Linux mint 19.3 Cinnamon
Installation Method : Through PPA or APPimage
Version of Openshot installed : 2.5.1
BZR Revision used (if any) :
MLT/melt version:
FFmpeg (i.e.libavcodec) version :3.4.6-0ubuntu0.18.04.1
FFmpeg installation : repository

Extract of the ffmpeg -i
ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil 55. 78.100 / 55. 78.100
  libavcodec 57.107.100 / 57.107.100
  libavformat 57. 83.100 / 57. 83.100
  libavdevice 57. 10.100 / 57. 10.100
  libavfilter 6.107.100 / 6.107.100
  libavresample 3. 7. 0 / 3. 7. 0
  libswscale 4. 8.100 / 4. 8.100
  libswresample 2. 9.100 / 2. 9.100
  libpostproc 54. 7.100 / 54. 7.100
Input #0, avi, from 'FilmLeandre_v2.avi':
  Metadata:
    encoder : Lavf57.83.100
  Duration: 00:00:11.43, start: 0.000000, bitrate: 6763 kb/s
    Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 5184x3456 [SAR 1:1 DAR 3:2], 6843 kb/s, 7 fps, 7 tbr, 7 tbn, 7 tbc