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Autres articles (62)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk 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.

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

Sur d’autres sites (7571)

  • ffmpeg concat only continues audio, not video

    23 avril 2017, par Stefan

    I’m trying to concat 3 videos with ffmpeg. Here the code I use.

    ffmpeg -f concat -safe 0 -i c:/ffmpeg/data/mylist.txt -c copy output.mp4

    In my first try the first video played for the set time and then nothing more happened. There I tried to sync the audio and ran the following on all videos.

    ffmpeg -i c:/ffmpeg/data/intro.mp4 -af apad -c:v copy -b:a 384k -shortest -avoid_negative_ts make_zero -fflags +genpts intro.mp4

    After running the concat again, now the audio from all 3 files play throughout the video, but only the video from the first video shows throughout the whole video.

    I’ve tried to to get the video tracks in the same encoding with the following without any changed in th concat result.

    ffmpeg -i c:/ffmpeg/data/video1.mp4 -r 24 video1.mp4

    AND

    ffmpeg -i c:/ffmpeg/data/video1.mp4 -af apad -c:v copy -b:v 64k -b:a 384k -shortest -avoid_negative_ts make_zero -fflags +genpts video1.mp4

    Here the ffprobe results for the 3 videos

    * FILE1 - INTRO *

    [STREAM]
    
index=0
    
codec_name=mpeg4
    
codec_long_name=MPEG-4 part 2
    
profile=Simple Profile
    
codec_type=video
    
codec_time_base=9899/237568
    
codec_tag_string=mp4v
    
codec_tag=0x7634706d
    
width=1920
    
height=1080
    
coded_width=1920
    
coded_height=1080
    
has_b_frames=0
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuv420p
    
level=1
    
color_range=N/A
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
quarter_sample=false
    
divx_packed=false
    
id=N/A
    
r_frame_rate=24/1
    
avg_frame_rate=237568/9899
    
time_base=1/12288
    
start_pts=0
    
start_time=0.000000
    
duration_ts=118788
    
duration=9.666992
    
bit_rate=7558738
    
max_bit_rate=7558738
    
bits_per_raw_sample=N/A
    
nb_frames=232
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=VideoHandler
    
[/STREAM]
    
[FORMAT]
    
filename=c:/ffmpeg/data/intro.mp4
    
nb_streams=1
    
nb_programs=0
    
format_name=mov,mp4,m4a,3gp,3g2,mj2
    
format_long_name=QuickTime / MOV
    
start_time=0.000000
    
duration=9.667000
    
size=9135788
    
bit_rate=7560391
    
probe_score=100
    
TAG:major_brand=isom
    
TAG:minor_version=512
    
TAG:compatible_brands=isomiso2mp41
    
TAG:encoder=Lavf57.72.101
    
[/FORMAT]

    * FILE3 - VIDEO1 *

        [STREAM]
    
index=0
    
codec_name=h264
    
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
profile=High
    
codec_type=video
    
codec_time_base=1/48
    
codec_tag_string=avc1
    
codec_tag=0x31637661
    
width=1280
    
height=720
    
coded_width=1280
    
coded_height=720
    
has_b_frames=2
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuv420p
    
level=31
    
color_range=N/A
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
is_avc=true
    
nal_length_size=4
    
id=N/A
    
r_frame_rate=24/1
    
avg_frame_rate=24/1
    
time_base=1/12288
    
start_pts=0
    
start_time=0.000000
    
duration_ts=470016
    
duration=38.250000
    
bit_rate=1550579
    
max_bit_rate=N/A
    
bits_per_raw_sample=8
    
nb_frames=918
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=VideoHandler
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=LC
    
codec_type=audio
    
codec_time_base=1/44100
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=44100
    
channels=1
    
channel_layout=mono
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/44100
    
start_pts=0
    
start_time=0.000000
    
duration_ts=1679328
    
duration=38.080000
    
bit_rate=70141
    
max_bit_rate=70141
    
bits_per_raw_sample=N/A
    
nb_frames=1641
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=SoundHandler
    
[/STREAM]
    
[FORMAT]
    
filename=c:/ffmpeg/data/video1.mp4
    
nb_streams=2
    
nb_programs=0
    
format_name=mov,mp4,m4a,3gp,3g2,mj2
    
format_long_name=QuickTime / MOV
    
start_time=0.000000
    
duration=38.250000
    
size=7778497
    
bit_rate=1626875
    
probe_score=100
    
TAG:major_brand=isom
    
TAG:minor_version=512
    
TAG:compatible_brands=isomiso2avc1mp41
    
TAG:encoder=Lavf57.72.101
    
[/FORMAT]

    * FILE3 - OUTRO *

    [STREAM]
    
index=0
    
codec_name=mpeg4
    
codec_long_name=MPEG-4 part 2
    
profile=Simple Profile
    
codec_type=video
    
codec_time_base=3115/74752
    
codec_tag_string=mp4v
    
codec_tag=0x7634706d
    
width=1920
    
height=1080
    
coded_width=1920
    
coded_height=1080
    
has_b_frames=0
    
sample_aspect_ratio=1:1
    
display_aspect_ratio=16:9
    
pix_fmt=yuv420p
    
level=1
    
color_range=N/A
    
color_space=unknown
    
color_transfer=unknown
    
color_primaries=unknown
    
chroma_location=left
    
field_order=unknown
    
timecode=N/A
    
refs=1
    
quarter_sample=false
    
divx_packed=false
    
id=N/A
    
r_frame_rate=24/1
    
avg_frame_rate=74752/3115
    
time_base=1/12288
    
start_pts=565
    
start_time=0.045980
    
duration_ts=75325
    
duration=6.129964
    
bit_rate=3968655
    
max_bit_rate=3968655
    
bits_per_raw_sample=N/A
    
nb_frames=146
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=VideoHandler
    
[/STREAM]
    
[STREAM]
    
index=1
    
codec_name=aac
    
codec_long_name=AAC (Advanced Audio Coding)
    
profile=LC
    
codec_type=audio
    
codec_time_base=1/44100
    
codec_tag_string=mp4a
    
codec_tag=0x6134706d
    
sample_fmt=fltp
    
sample_rate=44100
    
channels=2
    
channel_layout=stereo
    
bits_per_sample=0
    
id=N/A
    
r_frame_rate=0/0
    
avg_frame_rate=0/0
    
time_base=1/44100
    
start_pts=0
    
start_time=0.000000
    
duration_ts=268304
    
duration=6.083991
    
bit_rate=266855
    
max_bit_rate=384000
    
bits_per_raw_sample=N/A
    
nb_frames=262
    
nb_read_frames=N/A
    
nb_read_packets=N/A
    
DISPOSITION:default=1
    
DISPOSITION:dub=0
    
DISPOSITION:original=0
    
DISPOSITION:comment=0
    
DISPOSITION:lyrics=0
    
DISPOSITION:karaoke=0
    
DISPOSITION:forced=0
    
DISPOSITION:hearing_impaired=0
    
DISPOSITION:visual_impaired=0
    
DISPOSITION:clean_effects=0
    
DISPOSITION:attached_pic=0
    
DISPOSITION:timed_thumbnails=0
    
TAG:language=und
    
TAG:handler_name=SoundHandler
    
[/STREAM]
    
[FORMAT]
    
filename=c:/ffmpeg/data/outro.mp4
    
nb_streams=2
    
nb_programs=0
    
format_name=mov,mp4,m4a,3gp,3g2,mj2
    
format_long_name=QuickTime / MOV
    
start_time=0.000000
    
duration=6.084000
    
size=3226018
    
bit_rate=4241969
    
probe_score=100
    
TAG:major_brand=isom
    
TAG:minor_version=512
    
TAG:compatible_brands=isomiso2mp41
    
TAG:encoder=Lavf57.72.101
    
[/FORMAT]

  • Video cropping with FFMpeg on Android is very slow [duplicate]

    7 avril 2017, par Rami Jemli

    This question already has an answer here :

    What i tried :

    I am trying to implement video cropping on android using FFMpeg (ffmpeg-android).

    Here is the command I use :

    String[] complexCommand = {"-i", inputPath, "-strict", "experimental", "-vf", "crop=1080:1080:0:0", "-threads", "5", "-c:v", "libx264", "-preset", "ultrafast", filePath};

    The problem :

    Video cropping is working, but even though I am using all needed options to make the operation fast, it still takes a 1min long video the same duration to crop.

    How can I achieve better speeds ?
    Will I need to implement video cropping on server instead of device ?
    Is there another way to implement video cropping on Android instead of FFMpeg ?

    I understand that I can achieve better UX by letting the user edit a cropped TextureView/SurfaceView while doing the actual cropping in background, but I want to avoid this way as it takes more time.

    UPDATE

    Here is FFMpeg’s log output :

    SUCCESS with output : ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    
    built with gcc 4.8 (GCC)
    
    configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
    libavutil      55. 17.103 / 55. 17.103
    
    libavcodec     57. 24.102 / 57. 24.102
    
    libavformat    57. 25.100 / 57. 25.100
    
    libavdevice    57.  0.101 / 57.  0.101
    
    libavfilter     6. 31.100 /  6. 31.100
    
    libswscale      4.  0.100 /  4.  0.100
    
    libswresample   2.  0.101 /  2.  0.101
    
    libpostproc    54.  0.100 / 54.  0.100
    
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/DCIM/100ANDRO/MOV_0066.mp4':
    
    Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    creation_time   : 2017-04-02 11:58:58
    
    com.android.version: 6.0.1
    
    Duration: 00:00:59.60, start: 0.000000, bitrate: 17759 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 17498 kb/s, SAR 1:1 DAR 16:9, 29.90 fps, 29.92 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
    rotate          : 90
    
    creation_time   : 2017-04-02 11:58:58
    
    handler_name    : VideoHandle
    
    Side data:
    
    displaymatrix: rotation of -90.00 degrees
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 155 kb/s (default)
    
    Metadata:
    
    creation_time   : 2017-04-02 11:58:58
    
    handler_name    : SoundHandle
    
    [libx264 @ 0xb5bc4400] using SAR=1/1
    
    [libx264 @ 0xb5bc4400] using cpu capabilities: none!
    
    [libx264 @ 0xb5bc4400] profile High 4:4:4 Predictive, level 3.2, 4:2:0 8-bit
    
    [libx264 @ 0xb5bc4400] 64 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0x1 me=dia subme=1 psy=0 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=0 chroma_qp_offset=0 threads=5 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=0
    
    Output #0, mp4, to '/storage/emulated/0/Download/compress_video1.mp4':
    
    Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: isommp42
    
    com.android.version: 6.0.1
    
    encoder         : Lavf57.25.100
    
    Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1080 [SAR 1:1 DAR 1:1], q=-1--1, 29.92 fps, 11488 tbn, 29.92 tbc (default)
    
    Metadata:
    
    handler_name    : VideoHandle
    
    creation_time   : 2017-04-02 11:58:58
    
    encoder         : Lavc57.24.102 libx264
    
    Side data:
    
    unknown side data type 10 (24 bytes)
    
    Stream #0:1(eng): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
    creation_time   : 2017-04-02 11:58:58
    
    handler_name    : SoundHandle
    
    encoder         : Lavc57.24.102 aac
    
    Stream mapping:
    
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
    Press [q] to stop, [?] for help
    
    frame=    6 fps=0.0 q

    Any help is greatly appreciated !

  • Extend + scale a portrait video so the aspect ratio stays and the black borders become a blurry version of the video

    24 avril 2017, par P. Dee

    I have a 720 x 1280 pixels video. How do I extend and scale it to 1920 x 1080 such that the aspect ratio is being kept and the black borders are a blurry version of the video, so you don’t really notice that it’s just a small vertical stripe.

    Example

    enter image description here

    enter image description here

    I started with

    ffmpeg -i video720x1280.mp4 -vf "scale=608:1080,pad=width=1920:height=1080:x=656:y=0:color=black" video1920x1080.mp4

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