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Carte de Schillerkiez
13 mai 2011, par
Mis à jour : Septembre 2011
Langue : English
Type : Texte
Autres articles (95)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Use, discuss, criticize
13 avril 2011, parTalk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
A discussion list is available for all exchanges between users. -
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 ;
Sur d’autres sites (9815)
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ffmpeg converts .flv video to .gif with awful quality [migrated]
22 février 2013, par Kamil HismatullinI'm converting .flv movie to .gif file with ffmpeg.
ffmpeg -i input.flv -ss 00:00:00.000 -pix_fmt rgb24 -r 10 -s 320x240 -t 00:00:10.000 output.gifIt works great, but output gif file has a very law quality.
Any ideas how can I improve quality of converted gif ?
Output of command :
$ ffmpeg -i input.flv -ss 00:00:00.000 -pix_fmt rgb24 -r 10 -s 320x240 -t 00:00:10.000 output.gif
ffmpeg version 0.8.5-6:0.8.5-0ubuntu0.12.10.1, Copyright (c) 2000-2012 the Libav developers
built on Jan 24 2013 14:52:53 with gcc 4.7.2
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input.flv':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2013-02-14 04:00:07
Duration: 00:00:18.85, start: 0.000000, bitrate: 3098 kb/s
Stream #0.0(und): Video: h264 (High), yuv420p, 1280x720, 2905 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 192 kb/s
Metadata:
creation_time : 2013-02-14 04:00:07
[buffer @ 0x92a8ea0] w:1280 h:720 pixfmt:yuv420p
[scale @ 0x9215100] w:1280 h:720 fmt:yuv420p -> w:320 h:240 fmt:rgb24 flags:0x4
Output #0, gif, to 'output.gif':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2013-02-14 04:00:07
encoder : Lavf53.21.1
Stream #0.0(und): Video: rawvideo, rgb24, 320x240, q=2-31, 200 kb/s, 90k tbn, 10 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
Stream mapping:
Stream #0.0 -> #0.0
Press ctrl-c to stop encoding
frame= 101 fps= 32 q=0.0 Lsize= 8686kB time=10.10 bitrate=7045.0kbits/s dup=0 drop=149
video:22725kB audio:0kB global headers:0kB muxing overhead -61.778676%Thanks.
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aac-eld decode linux
28 février 2013, par bernardI'm was in Vietnam and tried to learn Vietnames.
The difficult thing is to learn the pronunciation and I made an Android App to record voices. Vietnamese people are very nice and I collected more than 500 sound files.Now I try to make a language learning app. To do that I try to reduce noise and normalize volume.
I have chosen the following settings :
this.recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
this.recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC_ELD);
this.recorder.setAudioEncodingBitRate(96000);
this.recorder.setAudioSamplingRate(44100);(cordova AudioPlayer.java - default settings are crap)
Now I have a problem. I'm not able to open the files with audacity or ffmpeg.
./ffmpeg -i /tmp/speaker__ualp__x%E1%BA%A5u.mp4 /tmp/uu.wav
ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Feb 20 2013 10:50:54 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --enable-libfdk-aac
libavutil 52. 13.100 / 52. 13.100
libavcodec 54. 86.100 / 54. 86.100
libavformat 54. 59.106 / 54. 59.106
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.100 / 3. 32.100
libswscale 2. 1.103 / 2. 1.103
libswresample 0. 17.102 / 0. 17.102
[aac @ 0xaada980] Audio object type 39 is not supported.
Last message repeated 1 times
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/speaker__ualp__x%E1%BA%A5u.mp4':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
creation_time : 2013-01-29 15:53:11
Duration: 00:00:01.21, start: 0.000000, bitrate: 116 kb/s
Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 96 kb/s
Metadata:
creation_time : 2013-01-29 15:53:11
handler_name : SoundHandle
[aac @ 0xaada980] Audio object type 39 is not supported.
Output #0, wav, to '/tmp/uu.wav':
Metadata:
major_brand : isom
minor_version : 0
compatible_brands: isom3gp4
Stream #0:0(eng): Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
Metadata:
creation_time : 2013-01-29 15:53:11
handler_name : SoundHandle
Stream mapping:
Stream #0:0 -> #0:0 (aac -> pcm_s16le)
Error while opening decoder for input stream #0:0What can I do ?
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Overlaying jpg onto Mp4 using -VF
16 février 2013, par bruxI am using the following command to overlay a jpg :
ffmpeg -i in.mp4 -vf "movie=bb.png [movie] ; [in] [movie] overlay=0:0 [out]" -vcodec libx264 -acodec copy out.mp4
This works as expected with the first file (listed below) but it doesnt work with the second file. There is no error when I try with the second file, rather is creates an unusually large file that would not open :
File 1 :
[me@me ~]$ ffmpeg -i 2013-02-08.mp4
ffmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developers
built on Jan 11 2013 00:12:08 with gcc 4.7.2 (GCC) 20120921 (Red Hat 4.7.2-2)
configuration:
libavutil 52. 8.100 / 52. 8.100
libavcodec 54. 74.100 / 54. 74.100
libavformat 54. 37.100 / 54. 37.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 23.101 / 3. 23.101
libswscale 2. 1.102 / 2. 1.102
libswresample 0. 17.101 / 0. 17.101
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2013-02-08.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 2013-02-08 20:31:49
encoder : Lavf53.24.0
Duration: 00:00:03.20, start: 0.000000, bitrate: 1030 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 1247 kb/s, 8.08 fps, 7.50 tbr, 15 tbn, 15 tbc
Metadata:
creation_time : 2013-02-08 20:31:49
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 8000 Hz, mono, s16, 12 kb/s
Metadata:
creation_time : 2013-02-08 20:31:49
handler_name : SoundHandler
At least one output file must be specifiedFile 2
[me@me ~]$ ffmpeg -i aq.mp4
ffmpeg version 1.0.git Copyright (c) 2000-2012 the FFmpeg developers
built on Jan 11 2013 00:12:08 with gcc 4.7.2 (GCC) 20120921 (Red Hat 4.7.2-2)
configuration:
libavutil 52. 8.100 / 52. 8.100
libavcodec 54. 74.100 / 54. 74.100
libavformat 54. 37.100 / 54. 37.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 23.101 / 3. 23.101
libswscale 2. 1.102 / 2. 1.102
libswresample 0. 17.101 / 0. 17.101
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'aq.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 2013-02-19 20:33:16
encoder : Lavf53.24.0
Duration: 00:00:03.20, start: 0.000000, bitrate: 1394 kb/s
Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 1451 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
Metadata:
creation_time : 2013-02-19 20:33:16
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 8000 Hz, mono, s16, 12 kb/s
Metadata:
creation_time : 2013-02-19 20:33:16
handler_name : SoundHandler
At least one output file must be specifiedIn case it is important I am capturing these videos with Android devices. The first mp4 file is created by a Nexus 7, the second (the file which wont overlay the image) is created using a HTC Desire.
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