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• converting audio from mp4 to wav and croping in the process using python

  7 mars 2019, par fastali

  I am looking for a package where I can use to convert the audio file from mp4 to wav simultaneously while also cropping the file using python.

  I have seen some posts about using ffmpeg to do the conversion but I dont seem to be able to run ffmpeg within python, and when converted to wav the files become around 10 times bigger which is kind of a storage issue.

  Does anyone have any suggestions except for pipelining it ?

• Revision 06b59299c8 : Don't waste time partitioning skip superblocks. Force 64x64 partitioning when a

  9 mars 2015, par Alex Converse

  Changed Paths :
   Modify /vp9/encoder/vp9_encodeframe.c

  
  
  Don’t waste time partitioning skip superblocks.

  Force 64x64 partitioning when a whole superblock is SEGMENT_LVL_SKIP. This
  drops encode times of screens mostly at rest by 20%.

  Change-Id : Ieba554b0b8a0c1679aae784a8bd11f038ab942c3

• FFMPEG not turning a series of .ppm files into a video

  13 avril 2024, par Radiation Sky Playz

  I don't have much of an idea of what i'm doing.
also i don't use stackoverflow so i still don't know what i'm doing xd

  


  I'm trying to do this : ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4 and it's making this appear :

  


  jajoo@jajoospc:~/Documents/fff$ ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --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-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --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-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-libsmbclient
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
[image2 @ 0x555d7e314780] decoding for stream 0 failed
[image2 @ 0x555d7e314780] Could not find codec parameters for stream 0 (Video: ppm, rgb24): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, image2, from 'screen_200x200_%d.ppm':
  Duration: 00:00:04.11, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: ppm, rgb24, 45 fps, 45 tbr, 45 tbn, 45 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (ppm (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 112 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 22 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 14 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 3 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 13 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 3 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
    Last message repeated 10 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
[buffer @ 0x555d7e317d40] Unable to parse option value "0x0" as image size
    Last message repeated 1 times
[buffer @ 0x555d7e317d40] Error setting option video_size to value 0x0.
[graph 0 input from stream 0:0 @ 0x555d7e3189c0] Error applying options to the filter.
Error reinitializing filters!
Error while filtering: Invalid argument
Finishing stream 0:0 without any data written to it.
[buffer @ 0x555d7e322800] Unable to parse option value "0x0" as image size
    Last message repeated 1 times
[buffer @ 0x555d7e322800] Error setting option video_size to value 0x0.
[graph 0 input from stream 0:0 @ 0x555d7e3226c0] Error applying options to the filter.
Error configuring filter graph
Conversion failed!


  


  I to make a funny video, but when i try to make it with ffmpeg this happens
and i have NO idea what it means.