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999,999
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Audio
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The Slip - Artworks
26 septembre 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
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Demon seed (wav version)
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Mis à jour : Avril 2013
Langue : English
Type : Audio
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The four of us are dying (wav version)
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Mis à jour : Avril 2013
Langue : English
Type : Audio
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Mis à jour : Avril 2013
Langue : English
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Sur d’autres sites (120)
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Anomalie #2024 (Nouveau) : langue des boutons d’admin
7 avril 2011, par jluc -Sur spip.net, depuis plusieurs années, le texte des boutons d’admin m’apparaît en espagnol alors que tous mes paramétrages (espace perso, navigateur etc) sont en français. Je me souviens qu’un habitué d’IRC constatait également ce même (...)
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ffmpeg : PNGs to mp4 video is strange scaled quicktime
15 mai, par v_bI am trying to create a video from multiple PNG files.

The files contain an animation of a line.

However, the output MP4 video looks really strange, as if the content is stretched or scaled.

Below, you can see screenshots of one of the PNG files and the resulting video file.


Some additional information :

I am on a MacPro M3 w. latest MacOs updates.

The images have transparent backgrounds.

Command :


ffmpeg -framerate 30 -pattern_type glob -i "*.png" -s:v 1600x800 -pix_fmt yuv420p -c:v libx264 result.mp4









Video Info :


ffprobe ./result.mp4 
ffprobe version 7.0 Copyright (c) 2007-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.3.9.4)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from './result.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf61.1.100
 Duration: 00:00:03.03, start: 0.000000, bitrate: 103 kb/s
 Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, unknown/bt709/iec61966-2-1, progressive), 1600x800, 98 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
 Metadata:
 handler_name : VideoHandler
 vendor_id : [0][0][0][0]
 encoder : Lavc61.3.100 libx264



ffmpeg version


ffmpeg version 7.0 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.3.9.4)
 configuration: --prefix=/opt/homebrew/Cellar/ffmpeg/7.0_1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopenvino --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox --enable-neon
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
Universal media converter
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...



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How to set min, max and avg bitrate or vbv delay using FFMPEG for livestream in Python ? [closed]
10 mai, par TebyyI'm trying to set the minimum, maximum, and average bitrate or vbv delay for a WebM livestream in Python using FFMPEG, but it still shows "0" or "N/A". I've checked the documentation, and everything seems correct. I've also searched for solutions online, but none of them have solved my problem. Does anyone know what I might be doing wrong and how it should be done correctly ?


FFMPEG Command :


ffmpeg_command = [
 'ffmpeg', '-f', 'rawvideo', '-pix_fmt', 'bgr24',
 '-s:v', '1920x1080', '-r', '60',
 '-i', '-',
 # '-an', # Turn off the audio track
 '-c:v', 'libvpx-vp9', '-g', '60', '-keyint_min', '60',
 '-b:v', '6M', '-minrate', '4M', '-maxrate', '12M', '-bufsize', '8M',
 '-crf', '0', '-deadline', 'realtime', '-tune', 'psnr', '-quality', 'good',
 '-tile-columns', '6', '-threads', '16', '-lag-in-frames', '16',
 '-f', 'webm', '-'
 ]



PyCharm Console Logs :


ffmpeg version N-115112-g39ce8a9695-20240507 Copyright (c) 2000-2024 the FFmpeg developers
 built with gcc 13.2.0 (crosstool-NG 1.26.0.65_ecc5e41)
 configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-fontconfig --enable-libharfbuzz --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --enable-libdvdread --enable-libdvdnav --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libaribcaption --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-libs=-lgomp --extra-ldflags=-pthread --extra-ldexeflags= --cc=x86_64-w64-mingw32-gcc --cxx=x86_64-w64-mingw32-g++ --ar=x86_64-w64-mingw32-gcc-ar --ranlib=x86_64-w64-mingw32-gcc-ranlib --nm=x86_64-w64-mingw32-gcc-nm --extra-version=20240507
 libavutil 59. 17.100 / 59. 17.100
 libavcodec 61. 5.103 / 61. 5.103
 libavformat 61. 3.103 / 61. 3.103
 libavdevice 61. 2.100 / 61. 2.100
 libavfilter 10. 2.101 / 10. 2.101
 libswscale 8. 2.100 / 8. 2.100
 libswresample 5. 2.100 / 5. 2.100
 libpostproc 58. 2.100 / 58. 2.100
Input #0, rawvideo, from 'fd:':
 Duration: N/A, start: 0.000000, bitrate: 2985984 kb/s
 Stream #0:0: Video: rawvideo (BGR[24] / 0x18524742), bgr24, 1920x1080, 2985984 kb/s, 60 tbr, 60 tbn
Stream mapping:
 Stream #0:0 -> #0:0 (rawvideo (native) -> vp9 (libvpx-vp9))
[libvpx-vp9 @ 000002972f387100] v1.14.0
Output #0, webm, to 'pipe:':
 Metadata:
 encoder : Lavf61.3.103
 Stream #0:0: Video: vp9, gbrp(pc, gbr/unknown/unknown, progressive), 1920x1080, q=2-31, 6000 kb/s, 60 fps, 1k tbn
 Metadata:
 encoder : Lavc61.5.103 libvpx-vp9
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 8000000 vbv_delay: N/A