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Autres articles (25)
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Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Organiser par catégorie
17 mai 2013, parDans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)
Sur d’autres sites (5556)
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Dropped frames in ffmpeg when adding an overlay
31 janvier 2016, par JuananI’m trying to add a white overlay box using ffmpeg to an mp4 file downloaded from YouTube. I know the syntax and it is working OK with small videos, but I’m struggling to get it to work in a longer one. This is the exact command :
ffmpeg -i intro.mp4 -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" out.mp4Initially, it works like a charm :
$ ffmpeg -i intro.mp4 -preset slow -strict -2 -vf "color=white:200x50 [over]; [in][over] overlay=250:320:enable=between(t\,0\,52) [out]" -t 60 out.mp4
ffmpeg version 2.5.3 Copyright (c) 2000-2015 the FFmpeg developers
built on Mar 26 2015 23:00:53 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.102 / 56. 15.102
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2014-01-30 16:48:50
Duration: 00:13:30.70, start: 0.000000, bitrate: 692 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 497 kb/s, 25 fps, 25 tbr, 50 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
Metadata:
creation_time : 2014-01-30 16:48:54
handler_name : IsoMedia File Produced by Google, 5-11-2011
File 'out.mp4' already exists. Overwrite ? [y/N] y
[libx264 @ 0x7fa8cb82fa00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
[libx264 @ 0x7fa8cb82fa00] profile High, level 3.1
[libx264 @ 0x7fa8cb82fa00] 264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
encoder : Lavf56.15.102
Stream #0:0(und): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720, q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc56.13.100 libx264
Stream #0:1(und): Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
Metadata:
creation_time : 2014-01-30 16:48:54
handler_name : IsoMedia File Produced by Google, 5-11-2011
encoder : Lavc56.13.100 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= 1500 fps= 47 q=-1.0 Lsize= 2518kB time=00:01:00.00 bitrate= 343.8kbits/sBut after some time, that command starts yelling dropped frames :
frame=20269 fps= 21 q=-1.0 Lsize= 23283kB time=00:13:30.70 bitrate= 235.3kbits/s dup=0 drop=548431and it never ends. Any clue ?
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FFMPEG : create movie from timestamped images
28 mai 2017, par HyperDevilIm trying to make a small movie file from a folder with webcam images.
They are named like this :
00-00-38.jpg
00-05-37.jpg
00-10-37.jpg
00-15-37.jpgH-M-S.jpg format
Although i tried patterntype glob and simpler commands i cannot get it to work.
This is what i tried :
ffmpeg -r 1 -pattern_type glob -i '*.jpg' -scale=720:-1 -c:v libx264 out.mp4
(got only one image)
ffmpeg -r 25 -i *.jpg -vf "scale=720:-1" output.mp4
(same size as a jpg file but no video)Console output :
ffmpeg -framerate 1 -pattern_type glob -i "*.jpg" -vf scale=720:-1 -c:v libx264 -pix_fmt yuv420p out.mp4
ffmpeg version 1.0.10 Copyright (c) 2000-2014 the FFmpeg developers built on Jul 25 2014 07:50:40 with gcc 4.7 (Debian 4.7.2-5)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security '
--extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis
--enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-li
bopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --
enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --
enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64
-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enabl
e-libopus --enable-fontconfig --enable-libfdk-aac --enable-libdc1394 --disable-altivec --dis
libavutil 51. 73.101 / 51. 73.101
libavcodec 54. 59.100 / 54. 59.100
libavformat 54. 29.104 / 54. 29.104
libavdevice 54. 2.101 / 54. 2.101
libavfilter 3. 17.100 / 3. 17.100
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
[image2 @ 0x1d53f00] max_analyze_duration 5000000 reached at 5000000
Input #0, image2, from '*.jpg':
Duration: 00:04:48.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p, 800x593 [SAR 96:96 DAR 800:593], 1 fps, 1 tbr, 1 tbn, 1 tbc
[libx264 @ 0x1d35bc0] using SAR=1780/1779
[libx264 @ 0x1d35bc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA4 FMA3 SSEMisalign LZCNT BMI1
[libx264 @ 0x1d35bc0] profile High, level 2.2
[libx264 @ 0x1d35bc0] 264 - core 132 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: ca
bac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dc
t=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=
0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 key
int_min=1 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=
1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf54.29.104
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 720x534 [SAR 1780:1779 DAR 800:593], q=-1--1, 1 tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg -> libx264)
Press [q] to stop, [?] for help
frame= 288 fps=145 q=32763.0 Lsize= 349kB time=00:04:46.00 bitrate= 10.0kbits/s
video:345kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.208469%
[libx264 @ 0x1d35bc0] frame I:2 Avg QP: 2.80 size:130328
[libx264 @ 0x1d35bc0] frame P:73 Avg QP: 4.70 size: 1167
[libx264 @ 0x1d35bc0] frame B:213 Avg QP:17.33 size: 30
[libx264 @ 0x1d35bc0] consecutive B-frames: 1.4% 0.0% 0.0% 98.6%
[libx264 @ 0x1d35bc0] mb I I16..4: 20.2% 24.9% 55.0%
[libx264 @ 0x1d35bc0] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 4.3% 0.1% 0.2% 0.0% 0.0% skip:95.5%
[libx264 @ 0x1d35bc0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.8% 0.0% 0.0% direct: 0.0% skip:99.2% L0: 5.4% L1:94.5% BI: 0.0
%
[libx264 @ 0x1d35bc0] 8x8 transform intra:24.9% inter:51.5%
[libx264 @ 0x1d35bc0] coded y,uvDC,uvAC intra: 99.4% 0.0% 0.0% inter: 0.6% 0.0% 0.0%
[libx264 @ 0x1d35bc0] i16 v,h,dc,p: 5% 19% 52% 25%
[libx264 @ 0x1d35bc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 28% 21% 4% 6% 4% 8% 5% 15%
[libx264 @ 0x1d35bc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 27% 13% 6% 8% 5% 9% 6% 12%
[libx264 @ 0x1d35bc0] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x1d35bc0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1d35bc0] ref P L0: 98.1% 0.0% 1.7% 0.2%
[libx264 @ 0x1d35bc0] ref B L0: 52.0% 48.0%
[libx264 @ 0x1d35bc0] ref B L1: 73.0% 27.0%
[libx264 @ 0x1d35bc0] kb/s:9.78The video is 364KB without any video.
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FFMPEG : create movie from timestamped images
26 août 2015, par HyperDevilIm trying to make a small movie file from a folder with webcam images.
They are named like this :
00-00-38.jpg
00-05-37.jpg
00-10-37.jpg
00-15-37.jpgH-M-S.jpg format
Although i tried patterntype glob and simpler commands i cannot get it to work.
This is what i tried :
ffmpeg -r 1 -pattern_type glob -i '*.jpg' -scale=720:-1 -c:v libx264 out.mp4
(got only one image)
ffmpeg -r 25 -i *.jpg -vf "scale=720:-1" output.mp4
(same size as a jpg file but no video)Console output :
ffmpeg -framerate 1 -pattern_type glob -i "*.jpg" -vf scale=720:-1 -c:v libx264 -pix_fmt yuv420p out.mp4
ffmpeg version 1.0.10 Copyright (c) 2000-2014 the FFmpeg developers built on Jul 25 2014 07:50:40 with gcc 4.7 (Debian 4.7.2-5)
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security '
--extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis
--enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-li
bopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --
enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --
enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/x86_64
-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enabl
e-libopus --enable-fontconfig --enable-libfdk-aac --enable-libdc1394 --disable-altivec --dis
libavutil 51. 73.101 / 51. 73.101
libavcodec 54. 59.100 / 54. 59.100
libavformat 54. 29.104 / 54. 29.104
libavdevice 54. 2.101 / 54. 2.101
libavfilter 3. 17.100 / 3. 17.100
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
[image2 @ 0x1d53f00] max_analyze_duration 5000000 reached at 5000000
Input #0, image2, from '*.jpg':
Duration: 00:04:48.00, start: 0.000000, bitrate: N/A
Stream #0:0: Video: mjpeg, yuvj420p, 800x593 [SAR 96:96 DAR 800:593], 1 fps, 1 tbr, 1 tbn, 1 tbc
[libx264 @ 0x1d35bc0] using SAR=1780/1779
[libx264 @ 0x1d35bc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX XOP FMA4 FMA3 SSEMisalign LZCNT BMI1
[libx264 @ 0x1d35bc0] profile High, level 2.2
[libx264 @ 0x1d35bc0] 264 - core 132 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: ca
bac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dc
t=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=
0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 key
int_min=1 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=
1:1.00
Output #0, mp4, to 'out.mp4':
Metadata:
encoder : Lavf54.29.104
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 720x534 [SAR 1780:1779 DAR 800:593], q=-1--1, 1 tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mjpeg -> libx264)
Press [q] to stop, [?] for help
frame= 288 fps=145 q=32763.0 Lsize= 349kB time=00:04:46.00 bitrate= 10.0kbits/s
video:345kB audio:0kB subtitle:0 global headers:0kB muxing overhead 1.208469%
[libx264 @ 0x1d35bc0] frame I:2 Avg QP: 2.80 size:130328
[libx264 @ 0x1d35bc0] frame P:73 Avg QP: 4.70 size: 1167
[libx264 @ 0x1d35bc0] frame B:213 Avg QP:17.33 size: 30
[libx264 @ 0x1d35bc0] consecutive B-frames: 1.4% 0.0% 0.0% 98.6%
[libx264 @ 0x1d35bc0] mb I I16..4: 20.2% 24.9% 55.0%
[libx264 @ 0x1d35bc0] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 4.3% 0.1% 0.2% 0.0% 0.0% skip:95.5%
[libx264 @ 0x1d35bc0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.8% 0.0% 0.0% direct: 0.0% skip:99.2% L0: 5.4% L1:94.5% BI: 0.0
%
[libx264 @ 0x1d35bc0] 8x8 transform intra:24.9% inter:51.5%
[libx264 @ 0x1d35bc0] coded y,uvDC,uvAC intra: 99.4% 0.0% 0.0% inter: 0.6% 0.0% 0.0%
[libx264 @ 0x1d35bc0] i16 v,h,dc,p: 5% 19% 52% 25%
[libx264 @ 0x1d35bc0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10% 28% 21% 4% 6% 4% 8% 5% 15%
[libx264 @ 0x1d35bc0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 27% 13% 6% 8% 5% 9% 6% 12%
[libx264 @ 0x1d35bc0] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x1d35bc0] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x1d35bc0] ref P L0: 98.1% 0.0% 1.7% 0.2%
[libx264 @ 0x1d35bc0] ref B L0: 52.0% 48.0%
[libx264 @ 0x1d35bc0] ref B L1: 73.0% 27.0%
[libx264 @ 0x1d35bc0] kb/s:9.78The video is 364KB without any video.
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