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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (41)
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Submit enhancements and plugins
13 avril 2011If you have developed a new extension to add one or more useful features to MediaSPIP, let us know and its integration into the core MedisSPIP functionality will be considered.
You can use the development discussion list to request for help with creating a plugin. As MediaSPIP is based on SPIP - or you can use the SPIP discussion list SPIP-Zone. -
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...)
Sur d’autres sites (4193)
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FFmpeg - Transcode video and keep original EXIF metadata in the transcoded file ?
10 mai 2015, par PauloI am trying to transcode a video from a .mov (recorded with the iPhone) and add the original metadata to transcoded file, how can I achieve that ?
Here is what I have tried but it does not add the metadata :
ffmpeg -i input.mov -map 0 -vcodec libx264 -preset superfast -acodec libfaac output.mp4
ffmpeg -i input.mov -map_metadata 0 -vcodec libx264 -preset superfast -acodec libfaac output.mp4I have also tried to transcode to webm but it also does not have the metadata, what am I doing wrong or how can I achieve that with ffmpeg ?
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How to get CMSampleBufferRef from AudioQueueBufferRef
26 novembre 2015, par arturdevI am using a private library which was made for live broadcasting from iPhone.
In every time of recording each frame it call adelegate
functionvoid MyAQInputCallback(void *inUserData, AudioQueueRef inQueue, AudioQueueBufferRef inBuffer, const AudioTimeStamp *inStartTime, UInt32 inNumPackets, const AudioStreamPacketDescription *inPacketDesc) ;
Now how I can append this inBuffer to my
AVAssetWriterInput
as usual :[self.audioWriterInput appendSampleBuffer:sampleBuffer];
I think maybe convert
AudioQueueBufferRef
toCMSampleBufferRef
somehow ?Thank you.
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Changing portrait videos to landscape aspect with latest ffmpeg release is breaking
19 décembre 2016, par zealI am having an issue scaling videos recorded in portrait with the latest version of ffmpeg (2.1). This worked fine in a previous version, but I need the lastest version to fix a different issue.
I am trying to take any video passed and make it 852 wide by 480 high. It works fine when converting videos that are wider then tall, but when the video is taller then wide it corrupts the video. It actually adds a letter box to the top and bottom, rather then left and right. Also, the meta data shows it as the correct height & width, but its wrong when played in windows.
Here are the parameters I am using.
ffmpeg -i INPUT -s 852x480 -r 30 -aspect 1.775 -b:v 2000000 -vcodec mpeg4 -vf "scale=iw*min(852/iw\,480 /ih):ih*min(852/iw\,480 /ih),pad=852:480 :(852-iw)/2:(480 -ih)/2" -ac 2 -b:a 128k -ar 44100 -y OUTPUT
Console output from
ffmpeg -i INPUT -r 30 -b:v 2000000 -vcodec mpeg4 -vf "scale=852:480" -ac 2 -b:a 128k -ar 44100 -y OUTPUT
:C:\Lib>ffmpeg -i "d\ca96cd13-2995-4794-b753-22be3b918659.mov" -r 30 -b:v 2000000 -vcodec mpeg4 -vf "
scale=852:480" -ac 2 -b:a 128k -ar 44100 -y "d\portx.mp4"
ffmpeg version N-58015-g8cdf4e0 Copyright (c) 2000-2013 the FFmpeg developers
built on Nov 10 2013 18:04:45 with gcc 4.8.2 (GCC)
configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32thread
s --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-icon
v --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-
libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrw
b --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr -
-enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enab
le-libxavs --enable-libxvid --enable-zlib
libavutil 52. 52.100 / 52. 52.100
libavcodec 55. 41.100 / 55. 41.100
libavformat 55. 21.100 / 55. 21.100
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 90.102 / 3. 90.102
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'd\ca96cd13-2995-4794-b753-22be3b918659.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2013-11-12 15:02:21
model : iPhone 5
model-eng : iPhone 5
encoder : 7.0.2
encoder-eng : 7.0.2
date : 2013-11-12T10:02:21-0500
date-eng : 2013-11-12T10:02:21-0500
make : Apple
make-eng : Apple
Duration: 00:00:15.48, start: 0.000000, bitrate: 780 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 7
05 kb/s, 29.98 fps, 30 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 90
creation_time : 2013-11-12 15:02:21
handler_name : Core Media Data Handler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default)
Metadata:
creation_time : 2013-11-12 15:02:21
handler_name : Core Media Data Handler
Output #0, mp4, to 'd\portx.mp4':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
make-eng : Apple
model : iPhone 5
model-eng : iPhone 5
make : Apple
encoder-eng : 7.0.2
date : 2013-11-12T10:02:21-0500
date-eng : 2013-11-12T10:02:21-0500
encoder : Lavf55.21.100
Stream #0:0(und): Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 852x480, q=2-31, 2000 kb/s, 15360
tbn, 30 tbc (default)
Metadata:
rotate : 90
creation_time : 2013-11-12 15:02:21
handler_name : Core Media Data Handler
Stream #0:1(und): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128
kb/s (default)
Metadata:
creation_time : 2013-11-12 15:02:21
handler_name : Core Media Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> mpeg4)
Stream #0:1 -> #0:1 (aac -> libvo_aacenc)
Press [q] to stop, [?] for help
frame= 465 fps=417 q=3.8 Lsize= 4118kB time=00:00:15.52 bitrate=2173.3kbits/s
video:3860kB audio:243kB subtitle:0 global headers:0kB muxing overhead 0.348231%