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Autres articles (87)
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Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Librairies et binaires spécifiques au traitement vidéo et sonore
31 janvier 2010, parLes logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
Binaires complémentaires et facultatifs flvtool2 : (...)
Sur d’autres sites (4175)
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ffmpeg minimal requirements configuration for encoding and decoding h264 files
14 novembre 2013, par TheSquadI'm trying to compile ffmpeg with minimal requirements in order to encode/decode with h264.
So far my command line configuration is :
./configure --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=fileonce compiled, I try this :
./ffmpeg -i ~/Dropbox/TestFile.mov -vcodec libx264 test.mp4but I get an error :
ffmpeg version N-58081-g2925571 Copyright (c) 2000-2013 the FFmpeg developers
built on Nov 14 2013 15:49:58 with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
configuration: --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file
libavutil 52. 52.100 / 52. 52.100
libavcodec 55. 43.100 / 55. 43.100
libavformat 55. 21.100 / 55. 21.100
libavdevice 55. 5.100 / 55. 5.100
libavfilter 3. 91.100 / 3. 91.100
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/mGs/Dropbox/TestFile.mov':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2013-06-23 14:33:09
model : iPhone 4S
model-fra : iPhone 4S
encoder : 6.0
encoder-fra : 6.0
date : 2013-06-23T16:33:09+0200
date-fra : 2013-06-23T16:33:09+0200
make : Apple
make-fra : Apple
Duration: 00:00:42.09, start: 0.000000, bitrate: 20960 kb/s
Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 20880 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 180
creation_time : 2013-06-23 14:33:09
handler_name : Core Media Data Handler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, 63 kb/s (default)
Metadata:
creation_time : 2013-06-23 14:33:09
handler_name : Core Media Data Handler
[NULL @ 0x7fd999802e00] Unable to find a suitable output format for 'test.mp4'
test.mp4: Invalid argumentThis is probably coming from the fact that I have forgot something to enable on the ffmpeg configuration... But I can't found out what.
The test file is a video got from iPhone 4S Camera.
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Ffmpeg - Remove rotate metadata
16 mai 2014, par Ron IWhen I extract the images from a video, the resulting images are getting rotated. The orientation of the video is correct, and the images are upside down. The metadata for the original video is 180, and also for the output file, so it looks like it is copying that data and additionally rotating 180 degrees. However, since the original video is already rotated, it is flipping the video upside down.
I would like to remove the metadata for the output file containing the ’rotate’ command. I tried adding -vf rotate=0, but it didn’t work.
Here is the command I am running :
ffmpeg -i left.MOV -r 1 -f image2 left-03%d.pngI assume this is what is throwing it off (it looks like it is copying the rotate metadata from the input file and applying it to the output file) :
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'left.MOV':
rotate : 180
Output #0, image2, to 'left-03%d.png':
Metadata:
rotate : 180Here’s the full output :
ffmpeg version 2.2.1 Copyright (c) 2000-2014 the FFmpeg developers
built on Apr 11 2014 22:50:35 with Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid
libavutil 52. 66.100 / 52. 66.100
libavcodec 55. 52.102 / 55. 52.102
libavformat 55. 33.100 / 55. 33.100
libavdevice 55. 10.100 / 55. 10.100
libavfilter 4. 2.100 / 4. 2.100
libavresample 1. 2. 0 / 1. 2. 0
libswscale 2. 5.102 / 2. 5.102
libswresample 0. 18.100 / 0. 18.100
libpostproc 52. 3.100 / 52. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'left.MOV':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
creation_time : 2014-05-14 16:24:27
make : Apple
make-eng : Apple
encoder : 7.1.1
encoder-eng : 7.1.1
date : 2014-05-14T09:23:48-0700
date-eng : 2014-05-14T09:23:48-0700
model : iPhone 5
model-eng : iPhone 5
Duration: 00:00:10.98, start: 0.000000, bitrate: 795 kb/s
Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default)
Metadata:
creation_time : 2014-05-14 16:24:27
handler_name : Core Media Data Handler
Stream #0:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 568x320, 728 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
Metadata:
rotate : 180
creation_time : 2014-05-14 16:24:27
handler_name : Core Media Data Handler
Output #0, image2, to 'left-03%d.png':
Metadata:
major_brand : qt
minor_version : 0
compatible_brands: qt
model-eng : iPhone 5
make : Apple
make-eng : Apple
model : iPhone 5
encoder-eng : 7.1.1
date : 2014-05-14T09:23:48-0700
date-eng : 2014-05-14T09:23:48-0700
encoder : Lavf55.33.100
Stream #0:0(und): Video: png, rgb24, 568x320, q=2-31, 200 kb/s, 90k tbn, 1 tbc (default)
Metadata:
rotate : 180
creation_time : 2014-05-14 16:24:27
handler_name : Core Media Data Handler
Stream mapping:
Stream #0:1 -> #0:0 (h264 -> png)
Press [q] to stop, [?] for help
frame= 14 fps=0.0 q=0.0 Lsize=N/A time=00:00:14.00 bitrate=N/A dup=0 drop=315
video:1521kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead -100.001411% -
iOS Recorded Video Playback on Android
1er mars 2015, par NiravI am trying to record video from iPhone device using UIImagePickerController and able to store it in MP4 format. The same video is uploaded on the Amazon S3 cloud.
When I try to play the same video on Android devices, it fails to play with an error, cannot play.
I searched forums/google and found that ffmpeg should be used to compress the video before uploading. I want to do the compression on the phone itself rather than on the server. Which is the best way to achieve this ?
Regards,
Nirav
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