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Autres articles (44)
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Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
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Dépôt de média et thèmes par FTP
31 mai 2013, parL’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...) -
MediaSPIP Player : les contrôles
26 mai 2010, parLes contrôles à la souris du lecteur
En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...)
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FFMPEG and Matplotlib for animations - strange outputs ?
27 juin 2020, par user13132640I'm trying to create animations using FFMPEG and matplotlib. Using the below code, I am creating the FFMpeg writer, and then using a loop, writing a series of graphs to the animation. However, the outputs I'm getting are very strange ; sometimes, when I watch the .mp4 file, the first 5 seconds are blank, then the video "ends" (the playback time on my media player says that it's complete), and at that point, my animation shows up. Other times, some frames are missing or skipped. I've tried searching around, but frankly I haven't found anyone with similar issues.


I just installed the latest version of FFMpeg today.


FFMpegWriter = manimation.writers['ffmpeg']
metadata = dict(title='Animation test', artist='name')
writer = FFMpegWriter(fps=1, metadata=metadata) # 1 frames per second, each year is 1 second



Then, the plotting part...(I've excluded the code where I setup the fig, ax etc.)


with writer.saving(fig, "animation.mp4", dpi=200):
 year = "2005"
 for i in range(4):

 d1_plot = d1[d1['Year'].str.contains(year, na=False)]
 ax.scatter(d1_plot["Lat"], d1_plot["Long"], c='g', s=d1_plot["Size"], transform=ccrs.PlateCarree())
 ax.set_title(year)
 writer.grab_frame()
 year = str(int(year)+1)



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ffmpeg transparent background with colorkey shows background bleeding
2 novembre 2022, par JanI am creating a video with transparent background video with the following command. After creation I want to overlay this video on another video


ffmpeg -f lavfi -i color=red:s=1920x1080,colorkey=red,format=rgba -loop 1 -t 0.08 -i "CreditWhite.png" -filter_complex "[1:v]scale=1920:-2,setpts=if(eq(N\,0)\,0\,1+1/0.02/TB),fps=60[fg]; [0:v][fg]overlay=y=-'t*h*0.02':eof_action=endall[v]" -map "[v]" -pix_fmt yuva444p10le -vcodec prores_ks credits.mov



Creating the video works fine but when I overlay this on another video (using openshot) I get a lot of color bleeding of the background colour around the edges. Any suggestions to improve the ffmpeg prompt to stop this from happening ? I tried very slightly increasing the opacity (0.06) as mentioned in another thread without success.
Video uploaded to youtube for reference


UPDATE


Using different colours had the same effect



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My FFMPEG throws me unexpected errors while writing a Thumbnail to the songs
4 mars 2019, par Harmonised7I am using Node to execute my ffmpeg. I use this wrapper :
https://www.npmjs.com/package/ffmpeg
Everything was fine when I was using smaller versions of the thumbnails provided by Youtube, but when I attempted the HD ones, it suddenly started giving me an error. I’ve tried -pix_fmt yuv422p and Many other pixel formats, but nothing helped. Though ONE out of 100+ songs did tag successfully.
here is my code :
downloadTags(tags.thumbnail, `./thumbnails/${tags.title}.jpg`).then(thumbnail =>
{
video.addCommand('-i', `"${thumbnail}"`);
video.addCommand('-map', '0');
video.addCommand('-map', '1');
video.addCommand('-c', 'copy');
video.addCommand('-c:v:1', 'png');
video.addCommand('-disposition:v:0', 'attached_pic');
if(tags.title)
video.addCommand('-metadata', `title="${tags.title}"`);
if(tags.artist)
video.addCommand('-metadata', `artist="${tags.artist}"`);
if(tags.id)
video.addCommand('-metadata', `comment="https://www.youtube.com/watch?v=${tags.id}"`);
video.addCommand('-pix_fmt', `yuv422p`);
var output = 'downloaded'
if (outFolder)
{
output = outFolder;
if(!fs.existsSync(output)) fs.mkdirSync(output);
}
video.save(`"./${output}/${tags.title}.${tags.format}"`, function (error, file)
{
if (error)
{
resolve(error);
return
}
try
{
fs.unlinkSync(song);
}
catch(err)
{
console.log(err.code);
}
resolve();
});
});
}and here is my error :
E
RROR: Error: Command failed: ffmpeg -i "songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a" -y -i "./thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg" -map 0 -map 1 -c copy -c:v:1 png -disposition:v:0 attached_pic -metadata title="&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]" -metadata artist="AReallyLongAndAwesomeNameThatIsBetterThanYoursInEveryPossibleWay" -metadata comment="https://www.youtube.com/watch?v=HprdvIIpR-I" "./written/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a"
ffmpeg version N-93214-g7e4d3dbe18 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.2.1 (GCC) 20190212
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-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-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 26.100 / 56. 26.100
libavcodec 58. 47.102 / 58. 47.102
libavformat 58. 26.101 / 58. 26.101
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 48.100 / 7. 48.100
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002213366bb00] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'songs/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].m4a':
Metadata:
major_brand : M4A
minor_version : 512
compatible_brands: isomiso2
title : &I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep]
artist : Cider Party
encoder : Lavf58.18.104
comment : https://www.youtube.com/watch?v=HprdvIIpR-I
Duration: 00:05:24.80, start: 0.000000, bitrate: 127 kb/s
Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:1: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 120x90 [SAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 90k tbc
Input #1, image2, from './thumbnails/&I feat. Giggly Maria - Dive (Exiark's Endless Sky Remix) [Chillstep].jpg':
Duration: 00:00:00.04, start: 0.000000, bitrate: 1575 kb/s
Stream #1:0: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 480x360 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Stream #1:0 -> #0:2 (mjpeg (native) -> png (native))
Press [q] to stop, [?] for help
[swscaler @ 00000221353d4fc0] deprecated pixel format used, make sure you did set range correctly
[ipod @ 00000221336703c0] Could not find tag for codec png in stream #2, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:2 --
Conversion failed!Keep in mind that All of my thumbnails retrieved are .jpg
Any suggestions ? Getting really desperate at this point...