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Autres articles (34)
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Configuration spécifique d’Apache
4 février 2011, parModules spécifiques
Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
Création d’un (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)
Sur d’autres sites (6210)
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FFMPEG Merge Multiple Videos : No Audio Source for one of them
28 mars 2020, par Coach RoebuckI’ve written a node.js script to merge multiple video files into a single file. I’ve encountered a scenario in which no audio is provided for one of the input video files.
I first executed ffprobe so that I can access what I’ll refer to as the "video file spec". In this scenario, I created a basic module to help me better understand my problem :
Evaluation from all processes: [
{
fileName: 'input-0.mp4',
isVideoAvailable: true,
isAudioAvailable: false,
width: 1920,
height: 1080,
sampleRateAspectRatio: '1/1',
audioVolume: 1,
duration: '13.140000'
},
{
fileName: 'input-1.mp4',
isVideoAvailable: true,
isAudioAvailable: true,
width: 1920,
height: 1080,
sampleRateAspectRatio: '1/1',
audioVolume: 1,
duration: '17.160000'
},
{
fileName: 'input-2.mp4',
isVideoAvailable: true,
isAudioAvailable: true,
width: 1920,
height: 1080,
sampleRateAspectRatio: '1/1',
audioVolume: 1,
duration: '20.280000'
},
{
fileName: 'input-3.mp4',
isVideoAvailable: true,
isAudioAvailable: true,
width: 1920,
height: 1080,
sampleRateAspectRatio: '1/1',
audioVolume: 1,
duration: '19.020000'
},
{
fileName: 'input-4.mp4',
isVideoAvailable: true,
isAudioAvailable: true,
width: 1920,
height: 1080,
sampleRateAspectRatio: '1/1',
audioVolume: 1,
duration: '9.480000'
}
]This next block of code are the parameters that I’ve actually hard-coded in this case. The screen resolution and aspect ratio are manually set, as I discovered differing settings with each video I have been processing. These parameters allow FFMPEG to execute successfully under normal circumstances :
let ffmpegParameters = [
'-i',
'input-0.mp4',
'-i',
'input-1.mp4',
'-i',
'input-2.mp4',
'-i',
'input-3.mp4',
'-i',
'input-4.mp4',
'-f',
'lavfi',
'-t',
'0.1',
'-i',
'anullsrc',
'-filter_complex',
'[0:v]scale=1920:1080,setsar=1/1[v0];[0:a]volume=1.0[a0];[1:v]scale=1920:1080,setsar=1/1[v1];[1:a]volume=1.0[a1];[2:v]scale=1920:1080,setsar=1/1[v2];[2:a]volume=1.0[a2];[3:v]scale=1920:1080,setsar=1/1[v3];[3:a]volume=1.0[a3];[4:v]scale=1920:1080,setsar=1/1[v4];[4:a]volume=1.0[a4];[v0][a0][v1][a1][v2][a2][v3][a3][v4][a4]concat=n=5:v=1:a=1[v][a]',
'-map',
'[v]',
'-map',
'[a]',
'-c:v',
'libx264',
'-vsync',
'2',
'output.mp4'
]A comment from a different thread suggested to supply a dummy audio in cases such as mine. I’ve added that to no prevail :
'-f',
'lavfi',
'-t',
'0.1',
'-i',
'anullsrc',I do not know how to adjust the complex filter to account for my situation of the first video containing no audio. I’ve included the entire log below :
Logs:
ffmpeg version git-2020-02-03-1c15111
Copyright (c) 2000-2020 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.8)
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-appkit --enable-avfoundation --enable-coreimage --enable-audiotoolbox
libavutil 56. 38.100 / 56. 38.100
libavcodec 58. 67.100 / 58. 67.100
libavformat 58. 37.100 / 58. 37.100
libavdevice 58. 9.103 / 58. 9.103
libavfilter 7. 73.100 / 7. 73.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input-0.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.37.100
Duration: 00:00:14.80, start: 1.620000, bitrate: 1499 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1498 kb/s, 25 fps, 25 tbr, 1200k tbn, 2400k tbc (default)
Metadata:
handler_name : VideoHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'input-1.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.37.100
Duration: 00:00:18.48, start: 0.000000, bitrate: 977 kb/s
Stream #1:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1440x876 [SAR 1:1 DAR 120:73], 903 kb/s, 15.21 fps, 16.67 tbr, 16k tbn, 32k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'input-2.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.37.100
Duration: 00:00:22.68, start: 0.000000, bitrate: 1795 kb/s
Stream #2:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1718 kb/s, 29.54 fps, 50 tbr, 16k tbn, 32k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #2:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'input-3.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.37.100
Duration: 00:00:54.60, start:
0.000000, bitrate: 404 kb/s
Stream #3:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1440x876 [SAR 1:1 DAR 120:73], 330 kb/s, 15.24 fps, 16.67 tbr, 16k tbn, 32k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #3:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #4, mov,mp4,m4a,3gp,3g2,mj2, from 'input-4.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.37.100
Duration: 00:00:09.36
, start: 0.000000, bitrate: 1794 kb/s
Stream #4:0(eng): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1717 kb/s, 29.38 fps, 50 tbr, 16k tbn, 32k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #4:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream specifier ':a' in filtergraph description [0:v]scale=1920:1080,setsar=1/1[v0];[0:a]volume=1.0[a0];[1:v]scale=1920:1080,setsar=1/1[v1];[1:a]volume=1.0[a1];[2:v]scale=1920:1080,setsar=1/1[v2];[2:a]volume=1.0[a2];[3:v]scale=1920:1080,setsar=1/1[v3];[3:a]volume=1.0[a3];[4:v]scale=1920:1080,setsar=1/1[v4];[4:a]volume=1.0[a4];[v0][a0][v1][a1][v2][a2][v3][a3][v4][a4]concat=n=5:v=1:a=1[v][a] matches no streams.When I removed the stream specifier [a0], I received a different error :
FFmpeg Video Merge - STDERR: [Parsed_setsar_3 @ 0x7f87c7709100] Media type mismatch between the 'Parsed_setsar_3' filter output pad 0 (video) and the 'Parsed_concat_14' filter input pad 1 (audio)
[AVFilterGraph @ 0x7f87c7430c00] Cannot create the link setsar:0 -> concat:1My question is how will the filter-complex value of my parameter list that I have defined be adjusted to deal with that first video, which has no audio ?
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Start of video is not labeled as "0" in QuickTime Video from GoPro
26 mars 2020, par John TerragnoliI’m trying to combine four GoPro videos into a single video, and then rotate it 90 degrees. However, the time scales on the bottom of the videos are all wrong. The videos are 17 minutes and 42 second. But the beginning time is labeled as 5:15:20:32 and the ending time is 5:33:01:32. It just looks really weird and I’d like to fix it. After I use ffmpeg to rotate and concatenate the videos, the problem persists. Could it possibly be fixed with Exiftool ?
ffmpeg -safe 0 -f concat -i list.txt -vcodec copy -acodec copy merged_videos.MP4ffmpeg -i input.mov -vf "transpose=1" output.movHere is the exiftool information on one of the videos :
File Name : GOPR3023.MP4
Directory : .
File Size : 3.7 GB
File Modification Date/Time : 2018:04:12 14:56:16-05:00
File Access Date/Time : 2020:03:25 12:17:18-05:00
File Inode Change Date/Time : 2020:03:25 17:57:04-05:00
File Permissions : rwxrwxrwx
File Type : MP4
File Type Extension : mp4
MIME Type : video/mp4
Major Brand : MP4 v1 [ISO 14496-1:ch13]
Minor Version : 2013.10.18
Compatible Brands : mp41
Movie Data Size : 4001979951
Movie Data Offset : 28
Movie Header Version : 0
Create Date : 2018:04:12 14:38:32
Modify Date : 2018:04:12 14:38:32
Time Scale : 60000
Duration : 0:17:42
Preferred Rate : 1
Preferred Volume : 100.00%
Preview Time : 0 s
Preview Duration : 0 s
Poster Time : 0 s
Selection Time : 0 s
Selection Duration : 0 s
Current Time : 0 s
Next Track ID : 6
Firmware Version : HD5.03.02.51.00
Lens Serial Number : NAH6092300301117
Camera Serial Number Hash : 34676f2cdf49b86a1514817a93377bf7
Track Header Version : 0
Track Create Date : 2018:04:12 14:38:32
Track Modify Date : 2018:04:12 14:38:32
Track ID : 1
Track Duration : 0:17:42
Track Layer : 0
Track Volume : 0.00%
Image Width : 1920
Image Height : 1080
Graphics Mode : srcCopy
Op Color : 0 0 0
Compressor ID : avc1
Source Image Width : 1920
Source Image Height : 1080
X Resolution : 72
Y Resolution : 72
Compressor Name : GoPro AVC encoder
Bit Depth : 24
Color Representation : nclx 1 1 1
Video Frame Rate : 59.94
Time Code : 3
Balance : 0
Audio Format : mp4a
Audio Channels : 2
Audio Bits Per Sample : 16
Audio Sample Rate : 48000
Text Font : Unknown (21)
Text Face : Plain
Text Size : 10
Text Color : 0 0 0
Background Color : 65535 65535 65535
Font Name : Helvetica
Other Format : tmcd
Warning : [minor] The ExtractEmbedded option may find more tags in the movie data
Matrix Structure : 1 0 0 0 1 0 0 0 1
Media Header Version : 0
Media Create Date : 2018:04:12 14:38:32
Media Modify Date : 2018:04:12 14:38:32
Media Time Scale : 60000
Media Duration : 0:17:42
Handler Class : Media Handler
Handler Type : NRT Metadata
Handler Description : GoPro SOS
Gen Media Version : 0
Gen Flags : 0 0 0
Gen Graphics Mode : srcCopy
Gen Op Color : 0 0 0
Gen Balance : 0
Meta Format : fdsc
Image Size : 1920x1080
Megapixels : 2.1
Avg Bitrate : 30.1 Mbps
Rotation : 0Part 2
There is a pretty obvious "stutter" at the 17:42 mark where the two clips are combined. I’ve tried using ffmpeg and iMovie, but both give the same results. The GoPro broke up the event into multiple clips on it’s own so it seems weird that there would be any information missing. Is there any way to get rid of this stutter ?Thanks !
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Create animated gif from a set of png images
12 avril 2020, par Zizi96I'm trying to use ffpmeg to convert a list of png to a gif.



Running
C:\Users\Me\Art\Animations\wubz\output> dirshows my files :


12/04/2020 16:48 <dir> ..
12/04/2020 16:45 136,706 wubz_0001.png
12/04/2020 16:45 136,180 wubz_0002.png
12/04/2020 16:45 136,413 wubz_0003.png
12/04/2020 16:45 136,099 wubz_0004.png
12/04/2020 16:45 136,309 wubz_0005.png
12/04/2020 16:45 137,172 wubz_0006.png
</dir>


The code I'm running in command prompt from
C:\Users\Me\Art\Animations\wubz\output>:


ffmpeg-f image2 -framerate 30 -i wubz_%d.png video.flv



gives the error message :

[image2 @ 000001efd6c4bac0] Could find no file with path 'wubz_%d.png' and index in the range 0-4
wubz_%d.png: No such file or directory


Can someone explain what I'm doing wrong, I don't get why ffmpeg isn't seeing the png files in the output directory.


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