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MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
MediaSPIP version 0.1 Beta
16 avril 2011, parMediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Amélioration de la version de base
13 septembre 2013Jolie sélection multiple
Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)
Sur d’autres sites (8870)
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Difference between 'display_aspect_ratio' and 'sample_aspect_ratio' in ffprobe [duplicate]
18 juin 2018, par John AllardThis question already has an answer here :
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ffmpeg scaling not working for video
1 answer
I have an issue where a video is played in the correct 16:9 aspect ratio when played through VLC or quicktime player, but when I attempt to extract individual frames with ffmpeg the frames come out as 4:3 aspect ratio.
The ffprobe output on the video in question is as follows
$ ffprobe -v error -select_streams v:0 -show_entries stream -of default=noprint_wrappers=1 -print_format json movie.mp4
{
"programs": [
],
"streams": [
{
"index": 0,
"codec_name": "h264",
"codec_long_name": "H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10",
"profile": "Main",
"codec_type": "video",
"codec_time_base": "126669/6400000",
"codec_tag_string": "avc1",
"codec_tag": "0x31637661",
"width": 2592,
"height": 1944,
"coded_width": 2592,
"coded_height": 1944,
"has_b_frames": 0,
"sample_aspect_ratio": "4:3",
"display_aspect_ratio": "16:9",
"pix_fmt": "yuvj420p",
"level": 50,
"color_range": "pc",
"color_space": "bt709",
"color_transfer": "bt709",
"color_primaries": "bt709",
"chroma_location": "left",
"refs": 1,
"is_avc": "true",
"nal_length_size": "4",
"r_frame_rate": "25/1",
"avg_frame_rate": "3200000/126669",
"time_base": "1/12800",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 126682,
"duration": "9.897031",
"bit_rate": "4638928",
"bits_per_raw_sample": "8",
"nb_frames": "250",
"disposition": {
"default": 1,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0,
"timed_thumbnails": 0
},
"tags": {
"language": "und",
"handler_name": "VideoHandler"
}
}
]
}So it says
"width": 2592,
"height": 1944,
"coded_width": 2592,
"coded_height": 1944,
"has_b_frames": 0,
"sample_aspect_ratio": "4:3",
"display_aspect_ratio": "16:9",which seems odd to me. The width/height are in 4:3, the sample aspect ratio is 4:3, the display is 16:9 ?
Now, when I play this through VLC/Quicktime the video looks fine (screenshot below)
but now, if I run an ffmpeg command to extract individual frames from this video, they come out in 4:3
ffmpeg -y -hide_banner -nostats -loglevel error -i movie.mp4 -vf select='eq(n\,10)+eq(n\,20)+eq(n\,30)+eq(n\,40)',scale=-1:640 -vsync 0 /tmp/ffmpeg_image_%04d.jpg
So I guess my questions are as follows :
- what is the relation between display aspect ratio, sample aspect ratio, and the width/height ratio ?
- how to I get ffmpeg to output in the correct aspect ratio ?
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ffmpeg scaling not working for video
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Reading subtitle metadata from mpeg files using ffprobe
26 septembre 2022, par Kaydee DunlopI'm using ffmpeg or to be more specific ffprobe which is part of the ffmpeg toolstack to read subtitle information from a mpeg file. Anyway, I'm facing an issue I currently don't fully understand. If I use the following command :


ffprobe -of json -show_streams -show_format


I get back something like this :


{
 "index": 6,
 "codec_name": "mov_text",
 "codec_long_name": "MOV text",
 "codec_type": "subtitle",
 "codec_tag_string": "tx3g",
 "codec_tag": "0x67337874",
 "width": 3840,
 "height": 240,
 "id": "0x6",
 "r_frame_rate": "0/0",
 "avg_frame_rate": "0/0",
 "time_base": "1/1000",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 6706616,
 "duration": "6706.616000",
 "bit_rate": "95",
 "nb_frames": "4028",
 "extradata_size": 48,
 "disposition": {
 "default": 0,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0,
 "captions": 0,
 "descriptions": 0,
 "metadata": 0,
 "dependent": 0,
 "still_image": 0
 },
 "tags": {
 "creation_time": "2022-09-11T01:02:33.000000Z",
 "language": "eng"
 }
 },


you can see, I have several options that can be set for the disposition section, I'm especially interested in "forced" and "hearing_impaired". To set the value for these options I'm trying to use a tool called "Subler" which is a tool to metarise mpeg files and their containing tracks. But for some reason, ffprobe does not seem to match with the fields Subler sets... So I'm kind stuck as I'm never really able to find out if a subtitle track is forced, hearing_impaired (SDH) etc. Is there any kind of workaround for this problem, maybe an extra option I have to set with ffprobe or so ? Is there maybe an alternative tool that can ?


If you are more interested into this issue I also uploaded a test scenario which has forced subtitles, normal subtitles and SDH subtitles properly set, it also contains screenshots and the raw SRT files, which are basically not needed as the subs are already embedded into the mp4 file, but just in case I also attached them.


https://drive.google.com/file/d/1ZZ32i17A33Lhpn4a5BDg033yV9PbZhtS/view?usp=sharing


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How does ffprobe determine duration ?
10 janvier 2019, par jasongullicksonI’m using
ffprobeto analyze media files stored on a remote server. This seems to work well, but for some files the duration is missing or incorrect (usually longer than it should be). Other times it returns this information accurately, and it doesn’t seem to be related to the media type (codec, etc.).Here’s an example of a command that works :
ffprobe -v quiet -print_format json -show_streams -show_format http://host.com/file.aiff{
"streams": [
{
"index": 0,
"codec_name": "pcm_s16be",
"codec_long_name": "PCM signed 16-bit big-endian",
"codec_type": "audio",
"codec_time_base": "1/44100",
"codec_tag_string": "[0][0][0][0]",
"codec_tag": "0x0000",
"sample_fmt": "s16",
"sample_rate": "44100",
"channels": 2,
"bits_per_sample": 16,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/44100",
"start_pts": 0,
"start_time": "0.000000",
"duration_ts": 8494248,
"duration": "192.613333",
"bit_rate": "1411200",
"nb_frames": "8494248",
"disposition": {
"default": 0,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
}
}
],
"format": {
"filename": "http://host.com/file.aiff",
"nb_streams": 1,
"nb_programs": 0,
"format_name": "aiff",
"format_long_name": "Audio IFF",
"start_time": "0.000000",
"duration": "192.613333",
"probe_score": 100
}
}Here’s an example of one that doesn’t :
ffprobe -v quiet -print_format json -show_streams -show_format "http://host.com/file.wav"Which generates this result :
{
"streams": [
{
"index": 0,
"codec_name": "pcm_s16le",
"codec_long_name": "PCM signed 16-bit little-endian",
"codec_type": "audio",
"codec_time_base": "1/44100",
"codec_tag_string": "[1][0][0][0]",
"codec_tag": "0x0001",
"sample_fmt": "s16",
"sample_rate": "44100",
"channels": 2,
"bits_per_sample": 16,
"r_frame_rate": "0/0",
"avg_frame_rate": "0/0",
"time_base": "1/44100",
"bit_rate": "1411200",
"disposition": {
"default": 0,
"dub": 0,
"original": 0,
"comment": 0,
"lyrics": 0,
"karaoke": 0,
"forced": 0,
"hearing_impaired": 0,
"visual_impaired": 0,
"clean_effects": 0,
"attached_pic": 0
}
}
],
"format": {
"filename": "http://host.com/file.wav",
"nb_streams": 1,
"nb_programs": 0,
"format_name": "wav",
"format_long_name": "WAV / WAVE (Waveform Audio)",
"bit_rate": "1411200",
"probe_score": 99
}
}These two examples are different formats, but I’ve seen it work and not work when the format is the same, I just don’t have an example handy.
What I’d like to know is if there is something I can change about the parameters I’m using with
ffprobeto allow the duration to be determined consistently and accurate, or any information I can find as to how ffprobe works so I figure out how I might change the input files, etc. so they work correctly.Alternatively, if there is a different tool that works more reliably (it would need to be an open-source Linux tool) any suggestions or recommendations are welcome.
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