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SPIP - plugins - embed code - Exemple
2 septembre 2013, par
Mis à jour : Septembre 2013
Langue : français
Type : Image
Autres articles (45)
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Mise à disposition des fichiers
14 avril 2011, parPar défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Récupération d’informations sur le site maître à l’installation d’une instance
26 novembre 2010, parUtilité
Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...)
Sur d’autres sites (5815)
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How to export audio from a iPhone video file with FFmpeg ?
11 janvier 2020, par DanScripterUPDATE 1 the problem resides in the input read-stream. (check below)
I am using fluent-ffmpeg (version : 2.1.2) to get a .mp3 file out of a video file that I input as a stream .createReadStream(). I output the file as a .pipe to a remoteWriteStream.
ffmpeg -i pipe:0 -vn -f mp3 -acodec mp3 -movflags frag_keyframe+empty_moov pipe:1
This works fine with .mp4, .webm and .mov (codec : prores) files.
But it somehow does not want to work with a .mov out of an iPhone 11. FFmpeg is not giving me any error when running above code. It creates the .mp3 file but the size is just 152 B and it is not playable.
I ffprobed the iPhone .mov files it returns this :
"{ streams:
[ { index: 0,
codec_name: 'hevc',
codec_long_name: 'H.265 / HEVC (High Efficiency Video Coding)',
profile: 'Main',
codec_type: 'video',
codec_time_base: '1111/33300',
codec_tag_string: 'hvc1',
codec_tag: '0x31637668',
width: 1920,
height: 1080,
coded_width: 1920,
coded_height: 1088,
has_b_frames: 2,
sample_aspect_ratio: '0:1',
display_aspect_ratio: '0:1',
pix_fmt: 'yuv420p',
level: 120,
color_range: 'tv',
color_space: 'bt709',
color_transfer: 'bt709',
color_primaries: 'bt709',
chroma_location: 'unspecified',
field_order: 'unknown',
timecode: 'N/A',
refs: 1,
id: 'N/A',
r_frame_rate: '30000/1001',
avg_frame_rate: '33300/1111',
time_base: '1/600',
start_pts: 'N/A',
start_time: 'N/A',
duration_ts: 6666,
duration: 11.11,
bit_rate: 7611708,
max_bit_rate: 'N/A',
bits_per_raw_sample: 'N/A',
nb_frames: 333,
nb_read_frames: 'N/A',
nb_read_packets: 'N/A',
tags: [Object],
disposition: [Object] },
{ index: 1,
codec_name: 'aac',
codec_long_name: 'AAC (Advanced Audio Coding)',
profile: 'unknown',
codec_type: 'audio',
codec_time_base: '1/44100',
codec_tag_string: 'mp4a',
codec_tag: '0x6134706d',
sample_fmt: 'fltp',
sample_rate: 44100,
channels: 2,
channel_layout: 'stereo',
bits_per_sample: 0,
id: 'N/A',
r_frame_rate: '0/0',
avg_frame_rate: '0/0',
time_base: '1/44100',
start_pts: 'N/A',
start_time: 'N/A',
duration_ts: 489951,
duration: 11.11,
bit_rate: 135091,
max_bit_rate: 192000,
bits_per_raw_sample: 'N/A',
nb_frames: 481,
nb_read_frames: 'N/A',
nb_read_packets: 'N/A',
tags: [Object],
disposition: [Object] },
{ index: 2,
codec_name: 'unknown',
codec_long_name: 'unknown',
profile: 'unknown',
codec_type: 'data',
codec_tag_string: 'mebx',
codec_tag: '0x7862656d',
id: 'N/A',
r_frame_rate: '0/0',
avg_frame_rate: '0/0',
time_base: '1/600',
start_pts: 'N/A',
start_time: 'N/A',
duration_ts: 6666,
duration: 11.11,
bit_rate: 2670,
max_bit_rate: 'N/A',
bits_per_raw_sample: 'N/A',
nb_frames: 38,
nb_read_frames: 'N/A',
nb_read_packets: 'N/A',
tags: [Object],
disposition: [Object] },
{ index: 3,
codec_name: 'unknown',
codec_long_name: 'unknown',
profile: 'unknown',
codec_type: 'data',
codec_tag_string: 'mebx',
codec_tag: '0x7862656d',
id: 'N/A',
r_frame_rate: '0/0',
avg_frame_rate: '0/0',
time_base: '1/600',
start_pts: 'N/A',
start_time: 'N/A',
duration_ts: 6666,
duration: 11.11,
bit_rate: 7,
max_bit_rate: 'N/A',
bits_per_raw_sample: 'N/A',
nb_frames: 1,
nb_read_frames: 'N/A',
nb_read_packets: 'N/A',
tags: [Object],
disposition: [Object] },
{ index: 4,
codec_name: 'unknown',
codec_long_name: 'unknown',
profile: 'unknown',
codec_type: 'data',
codec_tag_string: 'mebx',
codec_tag: '0x7862656d',
id: 'N/A',
r_frame_rate: '0/0',
avg_frame_rate: '0/0',
time_base: '1/600',
start_pts: 'N/A',
start_time: 'N/A',
duration_ts: 6666,
duration: 11.11,
bit_rate: 18117,
max_bit_rate: 'N/A',
bits_per_raw_sample: 'N/A',
nb_frames: 333,
nb_read_frames: 'N/A',
nb_read_packets: 'N/A',
tags: [Object],
disposition: [Object] } ],
format:
{ filename: 'pipe:0',
nb_streams: 5,
nb_programs: 0,
format_name: 'mov,mp4,m4a,3gp,3g2,mj2',
format_long_name: 'QuickTime / MOV',
start_time: 'N/A',
duration: 11.11,
size: 'N/A',
bit_rate: 'N/A',
probe_score: 100,
tags:
{ major_brand: 'qt ',
minor_version: '0',
compatible_brands: 'qt ',
creation_time: '2020-01-11T12:33:36.000000Z',
'com.apple.quicktime.make': 'Apple',
'com.apple.quicktime.model': 'iPhone 11',
'com.apple.quicktime.software': '13.3',
'com.apple.quicktime.creationdate': '2020-01-11T13:33:36+0100' } },
chapters: [] }"The created .mp3 file results in a undefined.
I already tried to take the .mov re-encode it to an .mp4 via ffmpeg and then try the above code to get the .mp3 - still does not work.
Any advice how I can make this work ?
thanks !
UPDATE 1
The problem resides in the input stream ! When I download the file to the local machine and input it as as a local file, not as a read stream, it works perfectly.I am creating the stream from a google cloud bucket like this :
const myBucket = storage.bucket('myBucket');
const remoteReadStream = myBucket.file(file).createReadStream();Since this code is perfectly working with all other codecs, what maybe the issue while creating the read stream from the google cloud from a h265 file ?
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Video out of LinkedList sequence
14 janvier 2020, par Marks GniteckisI just started working on a side project to learn JavaFX 13 and the idea is to play a sequence of frames like a video without saving the actual video or frames in temp folders. I’d like to buffer images and output them onto ImageView at 30fps. Here is what I’ve got so far :
The method that buffers images -
@FXML void takeVideo(ActionEvent event)
throws InterruptedException {
model.purgeBufferedVideo();
Timer timer = new Timer();
long startedAt = System.currentTimeMillis();
TimerTask task = new TimerTask() {
@Override public void run() {
while (System.currentTimeMillis() < startedAt + (1000 * Long.parseLong(s.getText()))) {
generateVideo(new Rectangle(Toolkit.getDefaultToolkit()
.getScreenSize()));
System.out.println(System.currentTimeMillis() != startedAt + (1000 * Long
.parseLong(s.getText())));
}
cancel();
System.out.println("Video buffered");
}
};
timer.schedule(task, 0L);
}Method to output images onto ImageView -
@FXML void playVideo(ActionEvent event) {
model.getBufferedVideo().forEach(i -> {
try {
preview.setImage(i);
Thread.sleep((60000 / Long.parseLong(s.getText()))/30);
preview.setImage(i);
} catch (InterruptedException e) {
e.printStackTrace();
}
});
}List population is working but only last image in the list is displayed in the ImageView and I can’t really get my head around why... Thanks in advance to everyone !
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vf_dnn_processing : remove parameter 'fmt'
27 décembre 2019, par Guo, Yejunvf_dnn_processing : remove parameter 'fmt'
do not request AVFrame's format in vf_ddn_processing with 'fmt',
but to add another filter for the format.command examples :
./ffmpeg -i input.jpg -vf format=bgr24,dnn_processing=model=halve_first_channel.model:input=dnn_in:output=dnn_out:dnn_backend=native -y out.native.png
./ffmpeg -i input.jpg -vf format=rgb24,dnn_processing=model=halve_first_channel.model:input=dnn_in:output=dnn_out:dnn_backend=native -y out.native.pngSigned-off-by : Guo, Yejun <yejun.guo@intel.com>
Signed-off-by : Pedro Arthur <bygrandao@gmail.com>