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Autres articles (64)
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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 (...) -
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 -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Sur d’autres sites (7114)
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ffmpeg not finding vcodec libx264
30 juillet 2013, par OfeargallI've installed the latest ffmpeg but it seems unable to locate the video codecs. Do I need to completeley remove ffmpeg and re run the
./configuredifferently in order for ffmpeg to find the video codecs ?Here's my current configuration :
FFmpeg version git-f61cbc2, Copyright (c) 2000-2011 the FFmpeg developers
built on Jan 18 2011 10:59:49 with gcc 4.0.1 (Apple Inc. build 5465)
configuration: --enable-libmp3lame --enable-shared --disable-mmx --arch=x86_64
libavutil 50.36. 0 / 50.36. 0
libavcore 0.16. 1 / 0.16. 1
libavcodec 52.108. 0 / 52.108. 0
libavformat 52.94. 0 / 52.94. 0
libavdevice 52. 2. 3 / 52. 2. 3
libavfilter 1.74. 0 / 1.74. 0
libswscale 0.12. 0 / 0.12. 0Or, can I just re-run the make command to include the library ?
Here's my snippet for transcoding :
ffmpeg -i ~/Desktop/watercarts.mov -vcodec libx264 -b 250k -bt 50k -acodec libfaac -ab 56k -ac 2 -s 480x320 ~/Desktop/watercartsipod.mp4And the error :
Unknown encoder 'libx264'Thank you in advance.
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Transcoding Mp4 video on Android with FFMPEG
18 octobre 2012, par geeknizerI've compiled FFMPEG binary from Bambuser project (refer question) and have pushed binary and .so files to application directory.
But when I try running FFMPEG with input file, it always complains file not found.
1|root@android:/data/data/com.bambuser.broadcaster # ls
cache libavcodec.so libavfilter.so libswscale.so
ffmpeg libavcore.so libavformat.so tutorial.mp4
lib libavdevice.so libavutil.so
1|root@android:/data/data/com.bambuser.broadcaster # ./ffmpeg -i tutorial.mp4 out.mp4
FFmpeg version UNKNOWN, Copyright (c) 2000-2010 the FFmpeg developers
built on May 8 2012 10:11:37 with gcc 4.4.3
configuration: --target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --sysroot=/home/tarandeep/tools/android-ndk/platforms/android-3/arch-arm --soname-prefix=/data/data/com.bambuser.broadcaster/lib/ --enable-shared --disable-symver --enable-small --optimization-flags=-O2 --disable-everything --enable-encoder=mpeg2video --enable-encoder=nellymoser --prefix=../build/ffmpeg/armeabi-v7a --extra-cflags='-march=armv7-a -mfloat-abi=softfp' --extra-ldflags=
libavutil 50.34. 0 / 50.34. 0
libavcore 0.16. 0 / 0.16. 0
libavcodec 52.99. 1 / 52.99. 1
libavformat 52.88. 0 / 52.88. 0
libavdevice 52. 2. 2 / 52. 2. 2
libavfilter 1.69. 0 / 1.69. 0
libswscale 0.12. 0 / 0.12. 0
tutorial.mp4: No such file or directoryI've tried placing file in /sdcard and other locations, I always get same output
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Replicate the format of a video to another
10 octobre 2017, par BasjLet’s say I have :
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video1.aviwhich is perfectly played (both sound and image) on my TV’s USB media input -
video2.aviwhich is not recognized by the TV : "Imposible to read this format"
I have tried lots of solutions, like :
ffmpeg -i video2.avi -codec:a libmp3lame -q:a 0 -ac 2 -ar 48000 -joint_stereo 0^
-codec:v libxvid -q:v 25 video2_reencoded.aviand when I compare
video1.aviwithvideo2_reencoded.aviwith MediaInfo, they look similar in most aspects, but finally the TV won’t playvideo2_reencoded.avi.Is there a way with
ffmpeg, to replicate all the specifications ofvideo1.avi(sound encoding properties, video encoding properties, image size, container type, etc.) onvideo2.avi?
Appendix : output of MediaInfo for the three videos. In this specific example,
video2.aviandvideo2_reencoded.aviare half-working : image ok but not the sound. In other video examples I tried,video2.aviandvideo2_reencoded.aviwould be both totally "Impossible to read".video1.avi(i.e. working)Format : AVI
Format/Info : Audio Video Interleave
File size : 352 MiB
Duration : 51 min 22 s
Overall bit rate : 959 kb/s
Writing application : VirtualDubMod 1.5.10.3 | ... || (build 2550/release)
Writing library : VirtualDubMod build 2550/release
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings : BVOP1
Format settings, BVOP : 1
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (MPEG)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 51 min 22 s
Bit rate : 821 kb/s
Width : 720 pixels
Height : 400 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.114
Stream size : 302 MiB (86%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 55
Codec ID/Hint : MP3
Duration : 51 min 22 s
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Stream size : 47.0 MiB (13%)
Alignment : Aligned on interleaves
Interleave, duration : 40 ms (1.00 video frame)
Interleave, preload duration : 504 ms
Writing library : LAME3.99r
Encoding settings : -m s -V 4 -q 2 -lowpass 17 -b 128video2.avi(i.e. non-working)Format : AVI
Format/Info : Audio Video Interleave
File size : 1.37 GiB
Duration : 2 h 12 min
Overall bit rate : 1 478 kb/s
Writing application : VirtualDubMod 1.5.10.2 Fr | ... || (build 2540/release)
Writing library : VirtualDubMod build 2540/release
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings : BVOP1
Format settings, BVOP : 1
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Muxing mode : Packed bitstream
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 2 h 12 min
Bit rate : 1 084 kb/s
Width : 624 pixels
Height : 368 pixels
Display aspect ratio : 5:3
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.189
Stream size : 1.00 GiB (73%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
Audio
ID : 1
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : 2000
Duration : 2 h 12 min
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Stream size : 364 MiB (26%)
Alignment : Split accross interleaves
Interleave, duration : 40 ms (1.00 video frame)
Interleave, preload duration : 512 msvideo2_reencoded.avi(i.e. non-working, reencoded, but still non-working)Format : AVI
Format/Info : Audio Video Interleave
Format profile : OpenDML
File size : 1.13 GiB
Duration : 2 h 12 min
Overall bit rate : 1 227 kb/s
Writing application : Lavf57.26.100
Video
ID : 0
Format : MPEG-4 Visual
Format profile : Advanced Simple@L5
Format settings : BVOP1
Format settings, BVOP : 1
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Muxing mode : Packed bitstream
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 2 h 12 min
Bit rate : 1 084 kb/s
Width : 624 pixels
Height : 368 pixels
Display aspect ratio : 5:3
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.189
Stream size : 1.00 GiB (88%)
Writing library : XviD 1.2.1 (UTC 2008-12-04)
Audio
ID : 1
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Codec ID : 55
Codec ID/Hint : MP3
Duration : 2 h 12 min
Bit rate mode : Constant
Bit rate : 128 kb/s
Channel(s) : 2 channels
Sampling rate : 48.0 kHz
Compression mode : Lossy
Stream size : 120 MiB (10%)
Alignment : Aligned on interleaves
Interleave, duration : 24 ms (0.60 video frame) -
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