Recherche avancée
Autres articles (89)
-
La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
Emballe Médias : Mettre en ligne simplement des documents
29 octobre 2010, parLe plugin emballe médias a été développé principalement pour la distribution mediaSPIP mais est également utilisé dans d’autres projets proches comme géodiversité par exemple. Plugins nécessaires et compatibles
Pour fonctionner ce plugin nécessite que d’autres plugins soient installés : CFG Saisies SPIP Bonux Diogène swfupload jqueryui
D’autres plugins peuvent être utilisés en complément afin d’améliorer ses capacités : Ancres douces Légendes photo_infos spipmotion (...) -
Le profil des utilisateurs
12 avril 2011, parChaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)
Sur d’autres sites (8723)
-
Cryptic `ffmpeg` + Python error : `Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_crop_1`
5 août 2022, par mattze_frischI want to use
ffmpegwith Python in a Jupyter notebook to create a video from 2000 PNG image files generated bymatplotlib. I'm on a Windows 7 machine.

The frames are very narrow and high, so I'd like to cut them vertically into seven equal-sized "tiles" using
cropand stacked those "tiles" horizontally usinghstack, but I'm getting only getting cryptic error messages :

ffmpeg_path = notebook_directory # Make sure ffmpeg.exe is in notebook directory!

frames_path = 'C:\\Users\\Username\\Desktop'
frames_renamed_path = os.path.join(frames_path, 'renamed')
os.chdir(frames_renamed_path) # Temporarily change current working directory

check_call(
 [
 os.path.join(ffmpeg_path, 'ffmpeg'),
 '-y', # Overwrite output files without asking
 '-report', # Write logfile to current working directory
 '-hwaccel', 'cuda', # Use GPU acceleration
 '-framerate', '60', # Input frame rate
 '-i', os.path.join(frames_renamed_path, 'frame%05d.png'), # Path to input frames
 #'-r', '60', # Output frame rate
 #'-vf', 'pad=ceil(iw/2)*2:ceil(ih/2)*2', # Pad frames to even pixel numbers (required by many codecs)
 #'-pix_fmt', 'yuv420p',
 '-pix_fmt', 'rgb32', # Use RGB32 pixel format matching MatPlotLib image output
 '-filter_complex', # Cut frames into tiles and rearrange (here: 7 horizontal tiles)
 'crop=in_w:in_h/7:0:0[tile_1],' # 1st tile from top
 + 'crop=in_w:in_h/7:0:in_h*1/7[tile_2],' # 2nd tile from top
 + 'crop=in_w:in_h/7:0:in_h*2/7[tile_3],' # 3rd tile from top
 + 'crop=in_w:in_h/7:0:in_h*3/7[tile_4],' # 4th tile from top
 + 'crop=in_w:in_h/7:0:in_h*4/7[tile_5],' # 5th tile from top
 + 'crop=in_w:in_h/7:0:in_h*5/7[tile_6],' # 6th tile from top
 + 'crop=in_w:in_h/7:0:in_h*6/7[tile_7],' # 7th tile from top
 + '[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7', # Stack tiles horizontally
 os.path.join(frames_renamed_path, 'video.mp4') # Path to store output video
 ]
)

os.chdir(notebook_directory) # Reset current working directory to notebook directory

---------------------------------------------------------------------------
CalledProcessError Traceback (most recent call last)
Input In [10], in <cell 9="9">()
 6 frames_renamed_path = os.path.join(frames_path, 'renamed')
 7 os.chdir(frames_renamed_path) # Temporarily change current working directory
----> 9 check_call(
 10 [
 11 os.path.join(ffmpeg_path, 'ffmpeg'),
 12 '-y', # Overwrite output files without asking
 13 '-report', # Write logfile to current working directory
 14 '-hwaccel', 'cuda', # Use GPU acceleration
 15 '-framerate', '60', # Input frame rate
 16 '-i', os.path.join(frames_renamed_path, 'frame%05d.png'), # Path to input frames
 17 #'-pattern_type', 'glob', '-i', os.path.join(frames_renamed_path, '*.png'), # glob not available in Windows by default
 18 #'-r', '60', # Output frame rate
 19 '-vf', 'pad=ceil(iw/2)*2:ceil(ih/2)*2', # Pad frames to even pixel numbers (required by many codecs)
 20 #'-pix_fmt', 'yuv420p',
 21 '-pix_fmt', 'rgb32', # Use RGB32 pixel format matching MatPlotLib image output
 22 '-filter_complex', # Cut frames into tiles and rearrange (here: 7 horizontal tiles)
 23 'crop=in_w:in_h/7:0:0[tile_1],' # 1st tile from top
 24 + 'crop=in_w:in_h/7:0:in_h*1/7[tile_2],' # 2nd tile from top
 25 + 'crop=in_w:in_h/7:0:in_h*2/7[tile_3],' # 3rd tile from top
 26 + 'crop=in_w:in_h/7:0:in_h*3/7[tile_4],' # 4th tile from top
 27 + 'crop=in_w:in_h/7:0:in_h*4/7[tile_5],' # 5th tile from top
 28 + 'crop=in_w:in_h/7:0:in_h*5/7[tile_6],' # 6th tile from top
 29 + 'crop=in_w:in_h/7:0:in_h*6/7[tile_7],' # 7th tile from top
 30 + '[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7', # Stack tiles horizontally
 31 os.path.join(frames_renamed_path, 'video.mp4') # Path to store output video
 32 ]
 33 )
 35 os.chdir(notebook_directory)

File C:\Program Files\Python38\lib\subprocess.py:364, in check_call(*popenargs, **kwargs)
 362 if cmd is None:
 363 cmd = popenargs[0]
--> 364 raise CalledProcessError(retcode, cmd)
 365 return 0

CalledProcessError: Command '['C:\\Users\\Username\\Desktop\\ffmpeg\\ffmpeg', '-y', '-report', '-hwaccel', 'cuda', '-framerate', '60', '-i', 'C:\\Users\\Username\\Desktop\\renamed\\frame%05d.png', '-vf', 'pad=ceil(iw/2)*2:ceil(ih/2)*2', '-pix_fmt', 'rgb32', '-filter_complex', 'crop=in_w:in_h/7:0:0[tile_1],crop=in_w:in_h/7:0:in_h*1/7[tile_2],crop=in_w:in_h/7:0:in_h*2/7[tile_3],crop=in_w:in_h/7:0:in_h*3/7[tile_4],crop=in_w:in_h/7:0:in_h*4/7[tile_5],crop=in_w:in_h/7:0:in_h*5/7[tile_6],crop=in_w:in_h/7:0:in_h*6/7[tile_7],[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7', 'C:\\Users\\Username\\Desktop\\renamed\\video.mp4']' returned non-zero exit status 1.
</cell>

This is the
ffmpeglog output (cropped) :

ffmpeg started on 2022-08-04 at 01:17:19
Report written to "ffmpeg-20220804-011719.log"
Log level: 48
Command line:
"C:\\Users\\Username\\Desktop\\ffmpeg\\ffmpeg" -y -report -hwaccel cuda -framerate 60 -i "C:\\Users\\Username\\Desktop\\renamed\\frame%05d.png" -vf "pad=ceil(iw/2)*2:ceil(ih/2)*2" -pix_fmt rgb32 -filter_complex "crop=in_w:in_h/7:0:0[tile_1],crop=in_w:in_h/7:0:in_h*1/7[tile_2],crop=in_w:in_h/7:0:in_h*2/7[tile_3],crop=in_w:in_h/7:0:in_h*3/7[tile_4],crop=in_w:in_h/7:0:in_h*4/7[tile_5],crop=in_w:in_h/7:0:in_h*5/7[tile_6],crop=in_w:in_h/7:0:in_h*6/7[tile_7],[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7" "C:\\Users\\Username\\Desktop\\renamed\\video.mp4"
ffmpeg version 2022-07-14-git-882aac99d2-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --ena libavutil 57. 29.100 / 57. 29.100
 libavcodec 59. 38.100 / 59. 38.100
 libavformat 59. 28.100 / 59. 28.100
 libavdevice 59. 8.100 / 59. 8.100
 libavfilter 8. 45.100 / 8. 45.100
 libswscale 6. 8.100 / 6. 8.100
 libswresample 4. 8.100 / 4. 8.100
 libpostproc 56. 7.100 / 56. 7.100
Splitting the commandline.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-hwaccel' ... matched as option 'hwaccel' (use HW accelerated decoding) with argument 'cuda'.
Reading option '-framerate' ... matched as AVOption 'framerate' with argument '60'.
Reading option '-i' ... matched as input url with argument 'C:\Users\Username\Desktop\renamed\frame%05d.png'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'pad=ceil(iw/2)*2:ceil(ih/2)*2'.
Reading option '-pix_fmt' ... matched as option 'pix_fmt' (set pixel format) with argument 'rgb32'.
Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument 'crop=in_w:in_h/7:0:0[tile_1],crop=in_w:in_h/7:0:in_h*1/7[tile_2],crop=in_w:in_h/7:0:in_h*2/7[tile_3],crop=in_w:in_h/7:0:in_h*3/7[tile_4],crop=in_w:in_h/7:0:in_h*4/7[tile_5],crop=in_w:in_h/7:0:in_h*5/7[tile_6],crop=in_w:in_h/7:0:in_h*6/7[tile_7],[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7'.
Reading option 'C:\Users\Username\Desktop\renamed\video.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option y (overwrite output files) with argument 1.
Applying option report (generate a report) with argument 1.
Applying option filter_complex (create a complex filtergraph) with argument crop=in_w:in_h/7:0:0[tile_1],crop=in_w:in_h/7:0:in_h*1/7[tile_2],crop=in_w:in_h/7:0:in_h*2/7[tile_3],crop=in_w:in_h/7:0:in_h*3/7[tile_4],crop=in_w:in_h/7:0:in_h*4/7[tile_5],crop=in_w:in_h/7:0:in_h*5/7[tile_6],crop=in_w:in_h/7:0:in_h*6/7[tile_7],[tile_1][tile_2][tile_3][tile_4][tile_5][tile_6][tile_7]hstack=7.
Successfully parsed a group of options.
Parsing a group of options: input url C:\Users\Username\Desktop\renamed\frame%05d.png.
Applying option hwaccel (use HW accelerated decoding) with argument cuda.
Successfully parsed a group of options.
Opening an input file: C:\Users\Username\Desktop\renamed\frame%05d.png.
[image2 @ 00000000005db0c0] Opening 'C:\Users\Username\Desktop\renamed\frame00000.png' for reading
[file @ 00000000005f6c00] Setting default whitelist 'file,crypto,data'
[AVIOContext @ 00000000005fed40] Statistics: 28860 bytes read, 0 seeks

<...>

[AVIOContext @ 00000000005fda00] Statistics: 67659 bytes read, 0 seeks
[image2 @ 00000000005db0c0] Probe buffer size limit of 5000000 bytes reached
Input #0, image2, from 'C:\Users\Username\Desktop\renamed\frame%05d.png':
 Duration: 00:00:25.00, start: 0.000000, bitrate: N/A
 Stream #0:0, 80, 1/60: Video: png, rgba(pc), 1200x1857 [SAR 3937:3937 DAR 400:619], 60 fps, 60 tbr, 60 tbn
Successfully opened the file.
[Parsed_crop_0 @ 00000000005fdc40] Setting 'out_w' to value 'in_w'
[Parsed_crop_0 @ 00000000005fdc40] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_0 @ 00000000005fdc40] Setting 'x' to value '0'
[Parsed_crop_0 @ 00000000005fdc40] Setting 'y' to value '0'
[Parsed_crop_1 @ 0000000000607500] Setting 'out_w' to value 'in_w'
[Parsed_crop_1 @ 0000000000607500] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_1 @ 0000000000607500] Setting 'x' to value '0'
[Parsed_crop_1 @ 0000000000607500] Setting 'y' to value 'in_h*1/7'
[Parsed_crop_2 @ 0000000000607880] Setting 'out_w' to value 'in_w'
[Parsed_crop_2 @ 0000000000607880] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_2 @ 0000000000607880] Setting 'x' to value '0'
[Parsed_crop_2 @ 0000000000607880] Setting 'y' to value 'in_h*2/7'
[Parsed_crop_3 @ 0000000000607c00] Setting 'out_w' to value 'in_w'
[Parsed_crop_3 @ 0000000000607c00] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_3 @ 0000000000607c00] Setting 'x' to value '0'
[Parsed_crop_3 @ 0000000000607c00] Setting 'y' to value 'in_h*3/7'
[Parsed_crop_4 @ 00000000005fda00] Setting 'out_w' to value 'in_w'
[Parsed_crop_4 @ 00000000005fda00] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_4 @ 00000000005fda00] Setting 'x' to value '0'
[Parsed_crop_4 @ 00000000005fda00] Setting 'y' to value 'in_h*4/7'
[Parsed_crop_5 @ 0000000002b8f800] Setting 'out_w' to value 'in_w'
[Parsed_crop_5 @ 0000000002b8f800] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_5 @ 0000000002b8f800] Setting 'x' to value '0'
[Parsed_crop_5 @ 0000000002b8f800] Setting 'y' to value 'in_h*5/7'
[Parsed_crop_6 @ 0000000000607d00] Setting 'out_w' to value 'in_w'
[Parsed_crop_6 @ 0000000000607d00] Setting 'out_h' to value 'in_h/7'
[Parsed_crop_6 @ 0000000000607d00] Setting 'x' to value '0'
[Parsed_crop_6 @ 0000000000607d00] Setting 'y' to value 'in_h*6/7'
[Parsed_hstack_7 @ 0000000002b8fb80] Setting 'inputs' to value '7'
Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_crop_1


What is the problem here ? Also, how does one interpret this cryptic error message at the end of the log output :


Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_crop_1

E.g. what is
input pad 0, why is itunlabeled, and why can't it find a matching stream ?

(PS. : Yes, I do have a habit of excessively documenting my code. ^^)


-
Couldn't find ffmpeg or avconv pydub
19 juillet 2022, par Blackhole927I am trying to import pydub, but when I run
from pydub import AudioSegment, I get this error :

Warning (from warnings module):
 File "C:\Usersname\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\pydub\utils.py", line 170
 warn("Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work", RuntimeWarning)
RuntimeWarning: Couldn't find ffmpeg or avconv - defaulting to ffmpeg, but may not work


I installed ffmpeg, and even though it is installed, I still get the error.

How do I fix this ?

-
lavfi/vf_v360 : factorize vector computation for barrelsplit
18 mai 2022, par Anton Khirnov
Syndiquer tout le site
