
Recherche avancée
Médias (1)
-
Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (95)
-
La file d’attente de SPIPmotion
28 novembre 2010, parUne file d’attente stockée dans la base de donnée
Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (5041)
-
Using ffmpegFrameRecorder the merged video is short ?
10 février 2014, par stack5I am using ffmpegFrameRecorder from JavaCV Api to merge several mp4 videos to one . Here is my code :
FrameGrabber grabberlist[] = new FFmpegFrameGrabber[filenamelist
.size()];
for (int i = 0; i < grabberlist.length; i++) {
System.out.println("FILES" + filenamelist.get(i));
grabberlist[i] = new FFmpegFrameGrabber(filenamelist.get(i));
grabberlist[i].start();
}
FrameRecorder recorder = new FFmpegFrameRecorder(
Environment.getExternalStorageDirectory()
+ "/Apptavia/output.mp4",
grabberlist[0].getImageWidth(),
grabberlist[0].getImageHeight(), 1);
recorder.start();
for (int i = 0; i < grabberlist.length; i++) {
Frame frame;
while ((frame = grabberlist[i].grabFrame()) != null) {
recorder.record(frame);
}
}
for (int i = 0; i < audioList.size(); i++) {
recorder.record(audioList.get(i));
}
recorder.stop();
for (int i = 0; i < grabberlist.length; i++) {
grabberlist[i].stop();
}
}The output video is created but the video length is less . I have debugged the number of frames from .grab() method is less than the total frames. What could be the solution for this . Please help.
-
Motion jpeg can not be captured well for motion jpeg on ffmpeg [migrated]
13 février 2014, par pocI set my network camera's codec to
motion jpeg
10 fps
By the command
ffmpeg -y -t 2 -f mjpeg -i http://172.19.1.42/video3.mjpg -acodec copy -vcodec copy test.avi
I expected the video should contain 20 frames in total,but the video seems fast-forwarded
and the information shown by the
ffprobe
is very strange.$ ffprobe -v quiet -show_format -show_streams test.avi
[STREAM]
index=0
codec_name=mjpeg
codec_long_name=MJPEG (Motion JPEG)
profile=unknown
codec_type=video
codec_time_base=1/50
codec_tag_string=MJPG
codec_tag=0x47504a4d
width=640
height=480
has_b_frames=0
sample_aspect_ratio=1:1
display_aspect_ratio=4:3
pix_fmt=yuvj420p
level=-99
timecode=N/A
id=N/A
r_frame_rate=50/1
avg_frame_rate=0/0
time_base=1/50
start_pts=0
start_time=0.000000
duration_ts=99
duration=1.980000
bit_rate=N/A
nb_frames=99
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=0
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
[/STREAM]
[FORMAT]
filename=test.avi
nb_streams=1
format_name=avi
format_long_name=AVI (Audio Video Interleaved)
start_time=0.000000
duration=1.980000
size=3903310
bit_rate=15770949
TAG:encoder=Lavf54.63.104
[/FORMAT] -
Extract Video Frames In Python
28 février 2024, par TheNoneI want to extract video frames and save them as image.



import os, sys
from PIL import Image

a, b, c = os.popen3("ffmpeg -i test.avi")
out = c.read()
dp = out.index("Duration: ")
duration = out[dp+10:dp+out[dp:].index(",")]
hh, mm, ss = map(float, duration.split(":"))
total = (hh*60 + mm)*60 + ss
for i in xrange(9):
 t = (i + 1) * total / 10
 os.system("ffmpeg -i test.avi -ss %0.3fs frame%i.png" % (t, i))




But I have this error :



FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
 configuration: --enable-memalign-hack --enable-mp3lame --enable-gpl --disable-vhook --disable-ffplay --disable-ffserver --enable-a52 --enable-xvid --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb --enable-pthreads --enable-x264 
 libavutil version: 49.0.0
 libavcodec version: 51.9.0
 libavformat version: 50.4.0
 built on Apr 15 2006 04:58:19, gcc: 4.0.1 (Apple Computer, Inc. build 5250)
Input #0, avi, from 'test.avi':
 Duration: 00:00:30.5, start: 0.000000, bitrate: 465 kb/s
 Stream #0.0, 25.00 fps(r): Video: mpeg4, yuv420p, 640x480
 Stream #0.1: Audio: mp3, 32000 Hz, mono, 32 kb/s
Unable for find a suitable output format for 'frame0.png'




Edit : ffmpeg -formats



FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
 configuration: --enable-memalign-hack --enable-mp3lame --enable-gpl --disable-vhook --disable-ffplay --disable-ffserver --enable-a52 --enable-xvid --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb --enable-pthreads --enable-x264 
 libavutil version: 49.0.0
 libavcodec version: 51.9.0
 libavformat version: 50.4.0
 built on Apr 15 2006 04:58:19, gcc: 4.0.1 (Apple Computer, Inc. build 5250)
File formats:
 E 3g2 3gp2 format
 E 3gp 3gp format
 D 4xm 4X Technologies format
 D RoQ Id RoQ format
 D aac ADTS AAC
 DE ac3 raw ac3
 E adts ADTS AAC
 DE aiff Audio IFF
 DE alaw pcm A law format
 DE amr 3gpp amr file format
 DE asf asf format
 E asf_stream asf format
 DE au SUN AU Format
 DE avi avi format
 D avs avs format
 E crc crc testing format
 D daud D-Cinema audio format
 D dts raw dts
 DE dv DV video format
 E dvd MPEG2 PS format (DVD VOB)
 D ea Electronic Arts Multimedia Format
 DE ffm ffm format
 D film_cpk Sega FILM/CPK format
 D flic FLI/FLC/FLX animation format
 DE flv flv format
 E framecrc framecrc testing format
 DE gif GIF Animation
 DE h261 raw h261
 DE h263 raw h263
 DE h264 raw H264 video format
 D idcin Id CIN format
 DE image image sequence
 DE image2 image2 sequence
 DE image2pipe piped image2 sequence
 DE imagepipe piped image sequence
 D ingenient Ingenient MJPEG
 D ipmovie Interplay MVE format
 DE m4v raw MPEG4 video format
 D matroska Matroska file format
 DE mjpeg MJPEG video
 D mm American Laser Games MM format
 DE mmf mmf format
 E mov mov format
 D mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG4/Motion JPEG 2000 format
 E mp2 MPEG audio layer 2
 DE mp3 MPEG audio layer 3
 E mp4 mp4 format
 DE mpeg MPEG1 System format
 E mpeg1video MPEG video
 E mpeg2video MPEG2 video
 DE mpegts MPEG2 transport stream format
 D mpegvideo MPEG video
 E mpjpeg Mime multipart JPEG format
 DE mulaw pcm mu law format
 D nsv NullSoft Video format
 E null null video format
 DE nut nut format
 D nuv NuppelVideo format
 D ogg Ogg
 E psp psp mp4 format
 D psxstr Sony Playstation STR format
 DE rawvideo raw video format
 D redir Redirector format
 DE rm rm format
 E rtp RTP output format
 D rtsp RTSP input format
 DE s16be pcm signed 16 bit big endian format
 DE s16le pcm signed 16 bit little endian format
 DE s8 pcm signed 8 bit format
 D sdp SDP
 D shn raw shorten
 D smk Smacker Video
 D sol Sierra SOL Format
 E svcd MPEG2 PS format (VOB)
 DE swf Flash format
 D tta true-audio
 DE u16be pcm unsigned 16 bit big endian format
 DE u16le pcm unsigned 16 bit little endian format
 DE u8 pcm unsigned 8 bit format
 E vcd MPEG1 System format (VCD)
 D vmd Sierra VMD format
 E vob MPEG2 PS format (VOB)
 DE voc Creative Voice File format
 DE wav wav format
 D wc3movie Wing Commander III movie format
 D wsaud Westwood Studios audio format
 D wsvqa Westwood Studios VQA format
 DE yuv4mpegpipe YUV4MPEG pipe format

Image formats (filename extensions, if any, follow):
 DE gif gif

Codecs:
 D V 4xm
 D V D 8bps
 DEA aac
 D V D aasc
 DEA ac3
 DEA adpcm_4xm
 DEA adpcm_adx
 DEA adpcm_ct
 DEA adpcm_ea
 DEA adpcm_ima_dk3
 DEA adpcm_ima_dk4
 DEA adpcm_ima_qt
 DEA adpcm_ima_smjpeg
 DEA adpcm_ima_wav
 DEA adpcm_ima_ws
 DEA adpcm_ms
 DEA adpcm_sbpro_2
 DEA adpcm_sbpro_3
 DEA adpcm_sbpro_4
 DEA adpcm_swf
 DEA adpcm_xa
 DEA adpcm_yamaha
 D A alac
 DEA amr_nb
 DEA amr_wb
 DEV D asv1
 DEV D asv2
 D V D avs
 D V bmp
 D V D camstudio
 D V D camtasia
 D V D cinepak
 D V D cljr
 D A cook
 D V D cyuv
 DES dvbsub
 DES dvdsub
 DEV D dvvideo
 DEV D ffv1
 DEVSD ffvhuff
 D A flac
 D V D flic
 DEVSD flv
 D V D fraps
 DEA g726
 DEV D h261
 DEVSDT h263
 D VSD h263i
 EV h263p
 DEV DT h264
 DEVSD huffyuv
 D V D idcinvideo
 D V D indeo2
 D V indeo3
 D A interplay_dpcm
 D V D interplayvideo
 EV jpegls
 D V kmvc
 EV ljpeg
 D V D loco
 D A mace3
 D A mace6
 D V D mdec
 DEV D mjpeg
 D V D mjpegb
 D V D mmvideo
 DEA mp2
 DEA mp3
 D A mp3adu
 D A mp3on4
 DEVSDT mpeg1video
 DEVSDT mpeg2video
 DEVSDT mpeg4
 D A mpeg4aac
 D VSDT mpegvideo
 DEVSD msmpeg4
 DEVSD msmpeg4v1
 DEVSD msmpeg4v2
 D V D msrle
 D V D msvideo1
 D V D mszh
 D V D nuv
 DEV pam
 DEV pbm
 DEA pcm_alaw
 DEA pcm_mulaw
 DEA pcm_s16be
 DEA pcm_s16le
 DEA pcm_s24be
 DEA pcm_s24daud
 DEA pcm_s24le
 DEA pcm_s32be
 DEA pcm_s32le
 DEA pcm_s8
 DEA pcm_u16be
 DEA pcm_u16le
 DEA pcm_u24be
 DEA pcm_u24le
 DEA pcm_u32be
 DEA pcm_u32le
 DEA pcm_u8
 DEV pgm
 DEV pgmyuv
 DEV png
 DEV ppm
 D A qdm2
 D V D qdraw
 D V D qpeg
 D V D qtrle
 DEV rawvideo
 D A real_144
 D A real_288
 D A roq_dpcm
 D V D roqvideo
 D V D rpza
 DEV D rv10
 DEV D rv20
 D A shorten
 D A smackaud
 D V smackvid
 D V D smc
 DEV snow
 D A sol_dpcm
 DEA sonic
 EA sonicls
 D V D sp5x
 DEV D svq1
 D VSD svq3
 D V theora
 D V D truemotion1
 D V D truemotion2
 D A truespeech
 D A tta
 D V D ultimotion
 D V vc9
 D V D vcr1
 D A vmdaudio
 D V D vmdvideo
 D A vorbis
 D V vp3
 D V D vqavideo
 D A wmav1
 D A wmav2
 DEVSD wmv1
 DEVSD wmv2
 D V D wnv1
 D A ws_snd1
 D A xan_dpcm
 D V D xan_wc3
 D V D xl
 EV xvid
 DEV D zlib
 D V zmbv

Supported file protocols:
 file: pipe: udp: rtp: tcp: http:
Frame size, frame rate abbreviations:
 ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif
Motion estimation methods:
 zero(fastest) full(slowest) log phods epzs(default) x1 hex umh iter

Note, the names of encoders and decoders dont always match, so there are
several cases where the above table shows encoder only or decoder only entries
even though both encoding and decoding are supported for example, the h263
decoder corresponds to the h263 and h263p encoders, for file formats its even
worse




What is wrong in my code ? Thanks in advance