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• How to divide my video horizontally using ffmpeg (without any other side-effects) ?

  1er février 2021, par Mayank Thapliyal

  I am processing my video(640 X 1280 dimensions). I want to divide my video horizontally into 2 separate videos(each video will now be 640 X 640 in dimensions),then combine them horizontally (video dimension will be now 1280 X 640)in a single video. I did the research on the internet and my issue was solved and not solved at the same time

  


  I made a batch file and add these commands in it :-

  


  ffmpeg -i input.mp4 -filter_complex "[0]crop=iw:ih/2:0:0[top];[0]crop=iw:ih/2:0:oh[bottom]" -map "[top]" top.mp4 -map "[bottom]" bottom.mp4
ffmpeg -i top.mp4 -i bottom.mp4 -filter_complex hstack output.mp4


  


  Yes,my task got solved but many other issues also came out of it :-

  


  1.) My output video has NO audio in it. No idea why there is no audio in the end results

  


  2.) My main video file (on which I am doing all this) is 258 MB in size. But the result was only 38 MB in size. No idea what is happening ? And even worse,I closely looked at the video,results were pretty same (only animation were not as smooth in output file as compared to input file)

  


  3.) It is taking too much time(I know that computing takes some time but maybe there may be some way/sacrifice to make the process much quicker)

  


  Thanks in advance for helping me

  


• Using ffmpeg results in undesirable motion blur

  13 septembre 2020, par Oleg Yablokov

  I am trying to convert a video with the best quality possible. The problem is, no matter which command arguments I use, a motion blur appears (the first image is converted, the second is the original) :

  


  

  


  The ffprobe's output of the original video :

  


  ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)
configuration: --prefix=/usr --extra-version=1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
libavutil      56. 31.100 / 56. 31.100
libavcodec     58. 54.100 / 58. 54.100
libavformat    58. 29.100 / 58. 29.100
libavdevice    58.  8.100 / 58.  8.100
libavfilter     7. 57.100 /  7. 57.100
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100
Input #0, mpegts, from 'input.ts':
Duration: 00:00:30.24, start: 1.400000, bitrate: 26265 kb/s
Program 1
    Metadata:
    service_name    : Service01
    service_provider: FFmpeg
    Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x101](ita): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 448 kb/s (clean effects)


  


  I've tried different combinations of the following arguments :

  


  ffmpeg \
-i input.ts \
-c:v libx264 \
-preset veryslow \
-qp 0 \
-minrate 25165824 \
-b:v 25165824 \
-r 25 \
-s 1920x1080 \
-aspect 16:9 \
-g 25 \
-crf 7 \
output.ts


  


  None of these settings helped. Please, could you tell me how to remove this motion blur ?

  


  EDIT : to be more specific, I leave a link to a shorten video ( 10 seconds). If you manage to convert it to hls (h.264 & .m3u8) without motion blur and with preserving the overall quality, it will be equivalent to the answer.

  


• Pyinstaller "Failed to execute script pyi_rth_pkgres" and missing packages

  12 octobre 2023, par gurnben

  This is my first time posting a question here as most of my questions have already been answered by someone else ! I am working on a GUI application in python and am attempting to use pyinstaller to package it into a single folder and .exe for easier portability. Currently, I am using windows 10 and anaconda3 to manage my python packages. The application relies on tkinter, pillow, numpy, scikit-learn, opencv, ffmpeg, and matplotlib. The application is formatted with a main GUI.py file that creates objects of a number of other files (many of which are stored in a subfolder as this GUI is replacing a command line utility that served the same purpose). The issue I am running into (as you can see in the title) is that the .exe is throwing the error block :

  



  


  Traceback (most recent call last) :
 File "site-packages\PyInstaller\loader\rthooks\pyi_rth_pkgres.py", line 11, in 
 File "c :\users\gurnben\anaconda3\envs\opencv\lib\site-packages\PyInstaller\loader\pyimod03_importers.py", line 389, in load_module
 exec(bytecode, module.dict)
 File "site-packages\setuptools-20.7.0-py3.5.egg\pkg_resources__init__.py", line 68, in 
 File "site-packages\setuptools-20.7.0-py3.5.egg\pkg_resources\extern__init__.py", line 60, in load_module
 ImportError : The 'packaging' package is required ; normally this is bundled with this package so if you get this warning, consult the packager of your distribution.
 Failed to execute script pyi_rth_pkgres

  


  



  When I look at the warn.txt it gives a massive list of missing packages including parts of some packages that are actually in the single folder package.
  
I have, however, successfully gotten it to recognize the dll files from opencv and it is not listed among the missing (nor is ffmpeg however I did not see any ffmpeg files in the folder). I had to pass in a custom path to get it to include the opencv files as they are not in anaconda at this time.

  



  Any hints or ideas for next troubleshooting steps ? I am overly greatful for all of the help you an offer and I can upload any code, files, etc. that would help you diagnose the issue. In the meantime I will continue searching for a solution myself !