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• Picture size 0x0 is invalid : trying to downsample 4k raw video into 1080 using ffmpeg

  25 février 2021, par neetu sigger

  ffmpeg -i CityAlley_3840x2160_50fps_8bit.yuv -vf scale=1920:1080 CityAlly.yuv


  


  But I got the error :

  


  ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --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
[IMGUTILS @ 0x7fffc0509b50] Picture size 0x0 is invalid
CityAlley_3840x2160_50fps_8bit.yuv: Invalid argument


  


• Manim error : It's a sound problem that I haven't seen anywhere else

  2 avril 2024, par Nεo Pλατo

  I've been using Manim for about a month now, and with already existing impediments to my progress none has been more painful than the lack of sound when I got to this part of Theorem of Beethoven's tutorial. I've been struggling with it for three weeks and opened issues on GitHub and Reddit without any success.

  


  So the code looks like this :

  


  class AudioTest(Scene):
    def construct(self):
        group_dots=VGroup(*[Dot()for _ in range(3)])
        group_dots.arrange_submobjects(RIGHT)
        for dot in group_dots:
            self.add_sound("click_this_and_nothing_else",gain=-10)
            self.add(dot)
            self.wait()
            self.wait()


  


  And the error message is a bit long and I'm still cracking at what it actually means. Here it is :

  


  C:\Manim\manim-18june>python manim.py tutorial\7_add_audio.py AudioTest -pm
Media will be written to C:/Users/NeoPlato/Videos/manim_videos\. You can change this behavior with the --media_dir flag.


Traceback (most recent call last):
  File "C:\Manim\manim-18june\manimlib\extract_scene.py", line 155, in main
    scene = SceneClass(**scene_kwargs)
  File "C:\Manim\manim-18june\manimlib\scene\scene.py", line 79, in __init__
    self.file_writer.finish()
  File "C:\Manim\manim-18june\manimlib\scene\scene_file_writer.py", line 379, in finish
    self.combine_movie_files()
  File "C:\Manim\manim-18june\manimlib\scene\scene_file_writer.py", line 506, in combine_movie_files
    self.audio_segment.export(
  File "C:\Users\allan\AppData\Local\Programs\Python\Python38-32\lib\site-packages\pydub\audio_segment.py", line 911, in export
    raise CouldntEncodeError(
pydub.exceptions.CouldntEncodeError: Encoding failed. ffmpeg/avlib returned error code: 1

Command:['ffmpeg', '-y', '-f', 'wav', '-i', 'C:\\Users\\NEOPLATO~1.000\\AppData\\Local\\Temp\\tmpk6j8yj98', '-b:a', '312k', '-f', 'mp3', 'C:\\Users\\NEOPLATO~1.000\\AppData\\Local\\Temp\\tmpyn225uxk']

Output from ffmpeg/avlib:

ffmpeg version git-2020-06-17-0b3bd00 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200523
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
--enable-amf
  libavutil      56. 55.100 / 56. 55.100
  libavcodec     58. 92.100 / 58. 92.100
  libavformat    58. 46.101 / 58. 46.101
  libavdevice    58. 11.100 / 58. 11.100
  libavfilter     7. 86.100 /  7. 86.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'C:\Users\NEOPLATO~1.000\AppData\Local\Temp\tmpk6j8yj98':
  Duration: 00:00:04.23, bitrate: 2822 kb/s
    Stream #0:0: Audio: pcm_s32le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s32, 2822 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (pcm_s32le (native) -> mp3 (mp3_mf))
Press [q] to stop, [?] for help
[mp3_mf @ 011be000] could not find any MFT for the given media type
[mp3_mf @ 011be000] could not create MFT
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!



I do have a larger documentation of the problem with current progress [over at GitHub](https://github.com/3b1b/manim/issues/1152)

>Help
>>Me
>>>Please :(
>>>>Pardon my naive looking formatting, I'm new to Markdown


  


• FFMPEG Video loop from images files

  27 février 2020, par Nesan Mano

  I am trying to make a video from a bundle of image files and then apply a an overlay on top of it.Another requirement is to make the video loop 3x. It is simply not working.

  The first three paths are pointing toward the same image bundle. (A folder containing images like the following DSC0001_0013.jpg,DSC0002_0013.jpg,etc)

  Observed symptoms :

  The script runs infinitely.I produces a video file of 0 KB.I have to abort script using CTRL+C

  This is my script.

  ffmpeg 
  
  -start_number 1 -framerate 3/1 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\xxx\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -filter_complex " [0:v]scale=600x900[scaled1]; [1:v]scale=600x900[scaled2]; [2:v]scale=600x900[scaled3]; [scaled1][3:v]overlay[tmp1]; [scaled2][4:v]overlay[tmp2]; [scaled3][5:v]overlay[tmp3]; [tmp1][tmp2][tmp3]concat=n=3[scaled] "
  
  -map [scaled] -r 10 -vcodec libx264  -pix_fmt yuv420p -crf 23  "C:\Users\xxx\Documents\Projets\2020\xxx\video test ffmpeg\test.mp4"