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Autres articles (33)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Création définitive du canal
12 mars 2010, parLorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
A la validation, vous recevez un email vous invitant donc à créer votre canal.
Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...) -
Les tâches Cron régulières de la ferme
1er décembre 2010, parLa gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
Le super Cron (gestion_mutu_super_cron)
Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)
Sur d’autres sites (4595)
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Why does calling ffmpeg from python's popen break screen capture functionality ?
4 mars 2016, par JabbI am trying to create screen captures from mp4 files in python.
Calling ffmpeg on the command line works fine. But as soon, as I issue the same command through python "popen", functionality breaks with an error that ffmpeg cannot find the moov atom. Can anyone explain this to me ?This is how I call ffmpeg from python :
def ffmpegGetScreenshot(self,inputFilename,index,startTime):
my_env = os.environ.copy()
my_env.update({'PATH': '/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'})
filename = inputFilename.split("/")[1]
directory = inputFilename.split("/")[0]
if os.path.isfile('videoscreenshots/'+filename+"_cs"+str(index)+".jpg"):
return 'videoscreenshots/'+filename+"_cs"+str(index)+".jpg"
print "get screenshots for: " + inputFilename
command = [ FFMPEG_BIN,
'-y',
'-i', inputFilename,
'-ss', str(int(startTime)),
'-vframes', '1',
#'-loglevel','quiet',
'videoscreenshots/'+filename+"_cs"+str(index)+".jpg"
]
pipe = sp.Popen(command, env=my_env,stdin = sp.PIPE,stdout = sp.PIPE, stderr=None)
print command
return 'videoscreenshots/'+filename+"_cs"+str(index)+".jpg"Result :
ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enable-shared --enable-pthreads --enable-libopenjpeg --enable-libfaac --enable-nonfree
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x652120] moov atom not found
videochunks/test.mp4: Invalid data found when processing input
test.mp4This is the same command called on the console
/usr/local/bin/ffmpeg -y -i videochunks/test.mp4 -ss 9 -vframes 1 videoscreenshots/test.mp4_cs2.jpgResult :
root@3:/app# /usr/local/bin/ffmpeg -y -i videochunks/test.mp4 -ss 9 -vframes 1 videoscreenshots/test.mp4_cs2.jpg
ffmpeg version 2.7.2 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enable-shared --enable-pthreads --enable-libopenjpeg --enable-libfaac --enable-nonfree
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'videochunks/test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
title : Test
composer : Test
album : Test
encoder : Lavf56.36.100
Duration: 00:00:10.01, start: 0.000000, bitrate: 520 kb/s
Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 4:3 DAR 16:9], 436 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 97 kb/s (default)
Metadata:
handler_name : SoundHandler
[swscaler @ 0x648260] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'videoscreenshots/test_cs2.jpg':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
title : Test
composer : Test
album : Test
encoder : Lavf56.36.100
Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 320x240 [SAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc56.41.100 mjpeg
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
Press [q] to stop, [?] for help
frame= 1 fps=0.0 q=3.9 Lsize=N/A time=00:00:00.04 bitrate=N/A
video:11kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown -
Bad file descriptor decoding mp3 to pipe with ffmpeg
1er février 2017, par Pete BleackleyCan any FFMpeg gurus help me with the following ?
I’m trying to convert a podcast to PCM and downsample it to 16KHz mono before feeding it to a speech recognition system for transcription. The command line
ffmpeg -i http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3 -f s16le -ac 1 -ar 16000 pipe:0fails with
av_interleaved_write_frame() : Bad file descriptor
What is the problem here and how do I fix it ?
EDIT
Full error message is
ffmpeg version N-83189-gd5d474aea5-static http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.1 (Debian 5.4.1-4) 20161202
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
libavutil 55. 44.100 / 55. 44.100
libavcodec 57. 75.100 / 57. 75.100
libavformat 57. 62.100 / 57. 62.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 69.100 / 6. 69.100
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mp3, from 'http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3':
Metadata:
track : 1
album : Conlangery Podcast
title : Conlangery 01
artist : George Corley
date : 2011
Duration: 00:44:58.08, start: 0.025057, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
Metadata:
encoder : LAME3.98r
Output #0, s16le, to 'pipe:0':
Metadata:
track : 1
album : Conlangery Podcast
title : Conlangery 01
artist : George Corley
date : 2011
encoder : Lavf57.62.100
Stream #0:0: Audio: pcm_s16le, 16000 Hz, mono, s16, 256 kb/s
Metadata:
encoder : Lavc57.75.100 pcm_s16le
Stream mapping:
Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
av_interleaved_write_frame(): Bad file descriptor
Error writing trailer of pipe:0: Bad file descriptorsize= 1kB time=00:00:00.02 bitrate= 256.0kbits/s speed=95.2x
video:0kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
Conversion failed!
Traceback (most recent call last):
File "./PodcastTranscriber.py", line 206, in <module>
PodcastTranscriber('http://conlangery.com/feed/',upload)()
File "./PodcastTranscriber.py", line 101, in __call__
self.process(item)
File "./PodcastTranscriber.py", line 136, in process
(audio,errors)=mp3.run(stdout=subprocess.PIPE)
File "/usr/local/lib/python2.7/site-packages/ffmpy.py", line 105, in run
raise FFRuntimeError(self.cmd, self.process.returncode, out[0], out[1])
ffmpy.FFRuntimeError: `ffmpeg -i http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3 -f s16le -ac 1 -ar 16000 pipe:0` exited with status 1
</module>The invoking code is
def process(self,item):
"""Downloads the audio and transcribes it"""
audio_url=None
print item['title']
for link in item.links:
if link['rel']=='enclosure':
audio_url=link['href']
if audio_url is not None:
pubDate=to_date(item.published_parsed)
if self.lastUploadDate is None or pubDate>self.lastUploadDate:
self.lastUploadDate=pubDate
mp3=ffmpy.FFmpeg(inputs={audio_url:None},
outputs={'pipe:0':['-f','s16le','-ac','1','-ar','16000']})
(audio,errors)=mp3.run(stdout=subprocess.PIPE)
sphinx=subprocess.Popen(['java','-jar','transcriber.jar'],
stdin=audio,
stdout=subprocess.PIPE)
wiki=threading.Thread(target=self.callback,args=(item,sphinx.stdout))
wiki.start()
#mp3.start()
#mp3.join()
sphinx.stdin.close()
wiki.join()
sphinx.wait() -
ffmpeg is preferring to encode in VP9 but I'm trying to encode in VP8
1er septembre 2016, par user1689634I’m trying to encode webm video files specifically in VP8, but ffmpeg is forcing VP9. I’m using
-c:v libvpx, which to my knowledge is supposed to be VP8, but when it encodes I see it’s encoding in VP9 instead :ffmpeg -framerate 7 -loop 1 -i "C:\converted\cover.jpg" -c:v libvpx
-i "C:\converted\Image.wav" -b:v 50k -c:a libvorbis -b:a 96k
-vf scale=-1:300 -shortest -metadata title="%artist% - %album%"
-metadata author="%artist%" -threads 8 -y "C:\converted\%artist% - %album%.webm"
ffmpeg version N-81489-ga37e6dd Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dx
va2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --ena
ble-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enab
le-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschr
oedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheor
a --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvo
rbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --ena
ble-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --e
nable-decklink --enable-zlib
libavutil 55. 29.100 / 55. 29.100
libavcodec 57. 54.101 / 57. 54.101
libavformat 57. 48.101 / 57. 48.101
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 57.100 / 6. 57.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Input #0, image2, from 'C:\converted\cover.jpg':
Duration: 00:00:00.14, start: 0.000000, bitrate: 3159 kb/s
Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 500x495 [S
AR 1:1 DAR 100:99], 7 fps, 7 tbr, 7 tbn, 7 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'C:\converted\Image.wav':
Metadata:
artist : ???????
genre : Alternative Rock
title : goodnight, wonderend
date : 2014
Duration: 00:04:48.00, bitrate: 1421 kb/s
Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels,
s16, 1411 kb/s
[swscaler @ 055f7d60] deprecated pixel format used, make sure you did set range
correctly
[libvpx-vp9 @ 0312d8e0] v1.6.0
[webm @ 0316e380] Using AVStream.codec to pass codec parameters to muxers is dep
recated, use AVStream.codecpar instead.
Last message repeated 1 times
Output #0, webm, to 'C:\converted\カラスヤサボウ - goodnight, wonderend.w
ebm':
Metadata:
title : カラスヤサボウ - goodnight, wonderend
author : カラスヤサボウ
encoder : Lavf57.48.101
Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p, 303x300 [SAR 10000:9999 DAR 1
00:99], q=-1--1, 50 kb/s, 7 fps, 1k tbn, 7 tbc
Metadata:
encoder : Lavc57.54.101 libvpx-vp9
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: vorbis (libvorbis), 44100 Hz, stereo, fltp, 96 kb/s
Metadata:
encoder : Lavc57.54.101 libvorbis
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg (native) -> vp9 (libvpx-vp9))
Stream #1:0 -> #0:1 (pcm_s16le (native) -> vorbis (libvorbis))
Press [q] to stop, [?] for help
frame= 30 fps=0.0 q=0.0 size= 29kB time=00:00:00.71 bitrate= 333.4kbits/s
frame= 37 fps= 36 q=0.0 size= 49kB time=00:00:01.71 bitrate= 233.6kbits/s
frame= 45 fps= 27 q=0.0 size= 60kB time=00:00:02.85 bitrate= 170.6kbits/s
frame= 53 fps= 23 q=0.0 size= 84kB time=00:00:04.00 bitrate= 172.7kbits/s
frame= 57 fps= 21 q=0.0 size= 102kB time=00:00:04.57 bitrate= 183.5kbits/s
frame= 62 fps= 19 q=0.0 size= 112kB time=00:00:05.28 bitrate= 173.4kbits/s
frame= 64 fps= 12 q=0.0 Lsize= 141kB time=00:00:09.00 bitrate= 128.1kbits/
s speed=1.69x
video:87kB audio:47kB subtitle:0kB other streams:0kB global headers:4kB muxing o
verhead: 4.908199%
Exiting normally, received signal 2.The build I have does have
--enable-libvpxand--enable-libvpx-vp9flags. It is also the latest default static build, I made no changes, just extracted it :ffmpeg-20160828-a37e6dd-win32-static.zipI was using an outdated build for a long time and updated today. I can’t find any documentation online to help me with this problem.
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