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Rennes Emotion Map 2010-11
19 octobre 2011, par
Mis à jour : Juillet 2013
Langue : français
Type : Texte
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Websites made with MediaSPIP
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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 -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
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Sur d’autres sites (8855)
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convert h.264 avi container to mp4 with ffmpeg
31 août 2014, par TomI’d like to convert my h.264 avi container to a mp4 container with ffmpeg. I’ve found this works :
./ffmpeg -i myfile.avi -vcodec copy myfile.mp4
ffmpeg version N-51169-gcedf276 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 21 2013 05:12:00 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 22.100 / 52. 22.100
libavcodec 55. 1.100 / 55. 1.100
libavformat 55. 0.100 / 55. 0.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 48.100 / 3. 48.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[avi @ 0x9fff660] non-interleaved AVI
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'myfile.avi':
Metadata:
encoder : Lavf52.64.2
Duration: 00:00:10.40, start: 0.000000, bitrate: 409 kb/s
Stream #0:0: Video: h264 (Baseline) (H264 / 0x34363248), yuvj420p, 640x480, 10 fps, 10 tbr, 10 tbn, 30 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 128 kb/s
Output #0, mp4, to 'myfile.mp4':
Metadata:
encoder : Lavf55.0.100
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 640x480, q=2-31, 10 fps, 10240 tbn, 10 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 8000 Hz, mono, s16, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (pcm_s16le -> libvo_aacenc)
Press [q] to stop, [?] for help
[mp4 @ 0xa006ea0] pts has no value
Last message repeated 100 times
frame= 101 fps=0.0 q=-1.0 Lsize= 350kB time=00:00:11.06 bitrate= 259.3kbits/s
video:332kB audio:15kB subtitle:0 global headers:0kB muxing overhead 0.926809%This generates a file that I can play with the HTML5 video player but for legacy browsers I’d like to use a flash player (Flowplayer). The file doesn’t play with Flowplayer, in fact it causes it to crash.
However if I use :
./ffmpeg -i myfile.avi myfile2.mp4
ffmpeg version N-51169-gcedf276 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 21 2013 05:12:00 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 22.100 / 52. 22.100
libavcodec 55. 1.100 / 55. 1.100
libavformat 55. 0.100 / 55. 0.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 48.100 / 3. 48.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[avi @ 0x9b02660] non-interleaved AVI
Guessed Channel Layout for Input Stream #0.1 : mono
Input #0, avi, from 'myfile.avi':
Metadata:
encoder : Lavf52.64.2
Duration: 00:00:10.40, start: 0.000000, bitrate: 409 kb/s
Stream #0:0: Video: h264 (Baseline) (H264 / 0x34363248), yuvj420p, 640x480, 10 fps, 10 tbr, 10 tbn, 30 tbc
Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 128 kb/s
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x9b065a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
[libx264 @ 0x9b065a0] profile High, level 2.2
[libx264 @ 0x9b065a0] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=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 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=1 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=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=10 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 'myfile2.mp4':
Metadata:
encoder : Lavf55.0.100
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 640x480, q=-1--1, 10240 tbn, 10 tbc
Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 8000 Hz, mono, s16, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (h264 -> libx264)
Stream #0:1 -> #0:1 (pcm_s16le -> libvo_aacenc)
Press [q] to stop, [?] for help
frame= 47 fps=0.0 q=25.0 size= 21kB time=00:00:04.40 bitrate= 39.9kbits/s dup=3 dropframe= 59 fps= 56 q=25.0 size= 56kB time=00:00:05.68 bitrate= 80.2kbits/s dup=3 dropframe= 71 fps= 45 q=25.0 size= 89kB time=00:00:06.84 bitrate= 106.9kbits/s dup=3 dropframe= 83 fps= 40 q=25.0 size= 124kB time=00:00:08.12 bitrate= 124.9kbits/s dup=3 dropframe= 94 fps= 36 q=25.0 size= 157kB time=00:00:09.14 bitrate= 140.4kbits/s dup=4 dropframe= 105 fps= 23 q=25.0 Lsize= 309kB time=00:00:11.06 bitrate= 228.8kbits/s dup=4 drop=0
video:291kB audio:15kB subtitle:0 global headers:0kB muxing overhead 1.108651%
[libx264 @ 0x9b065a0] frame I:1 Avg QP:17.65 size: 12772
[libx264 @ 0x9b065a0] frame P:94 Avg QP:19.46 size: 2868
[libx264 @ 0x9b065a0] frame B:10 Avg QP:21.58 size: 1464
[libx264 @ 0x9b065a0] consecutive B-frames: 82.9% 13.3% 0.0% 3.8%
[libx264 @ 0x9b065a0] mb I I16..4: 16.6% 66.3% 17.1%
[libx264 @ 0x9b065a0] mb P I16..4: 4.2% 6.3% 0.5% P16..4: 27.0% 9.5% 5.1% 0.0% 0.0% skip:47.4%
[libx264 @ 0x9b065a0] mb B I16..4: 0.8% 1.0% 0.0% B16..8: 39.1% 4.6% 0.5% direct: 2.4% skip:51.7% L0:39.8% L1:56.4% BI: 3.9%
[libx264 @ 0x9b065a0] 8x8 transform intra:58.0% inter:74.7%
[libx264 @ 0x9b065a0] coded y,uvDC,uvAC intra: 47.3% 0.0% 0.0% inter: 16.6% 0.0% 0.0%
[libx264 @ 0x9b065a0] i16 v,h,dc,p: 29% 19% 10% 42%
[libx264 @ 0x9b065a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 21% 29% 2% 3% 4% 4% 3% 3%
[libx264 @ 0x9b065a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 28% 18% 2% 3% 3% 3% 2% 2%
[libx264 @ 0x9b065a0] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x9b065a0] Weighted P-Frames: Y:5.3% UV:0.0%
[libx264 @ 0x9b065a0] ref P L0: 67.9% 12.0% 12.6% 6.8% 0.6%
[libx264 @ 0x9b065a0] ref B L0: 76.9% 23.1%
[libx264 @ 0x9b065a0] ref B L1: 99.7% 0.3%
[libx264 @ 0x9b065a0] kb/s:226.31This works great. But the timing is quite different not to mention CPU cycles. The first command is measured in milli-secs while the second can take quite some time ( 5-40secs).
Is there another way I can convert the avi to a mp4 container quickly ? Ideally by re-muxing as opposed to re-encoding.
EDIT
I’m using this right now which I find to be the fastest for re-encoding. But again I’d rather not do this. I just want to re-mux the code.
ffmpeg -loglevel quiet -i myfile.avi -vcodec libx264 -profile:v baseline -preset ultrafast myfile.mp4
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using ffmpeg to convert gif to mp4 , output doesn't play on android
3 août 2015, par MahdiI just use the following command to convert a gif file to mp4 but the resulting mp4 file doesn’t play in android default video player .
what did I wrong ?
is there any aditional steps should I take to produce android playable mp4 files ?$ ffmpeg -f gif -i infile.gif outfile.mp4
my test gif file : Test Gif File
My desktop played the output.mp4 very well using VLC Media Player and also MX Player on my android device played the video file without any error. -
configure : Only redirect strtoll to _strtoi64 if necessary
25 juillet 2015, par Martin Storsjö