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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (47)
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List of compatible distributions
26 avril 2011, parThe table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...) -
Personnaliser en ajoutant son logo, sa bannière ou son image de fond
5 septembre 2013, parCertains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;
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Configuration spécifique pour PHP5
4 février 2011, parPHP5 est obligatoire, vous pouvez l’installer en suivant ce tutoriel spécifique.
Il est recommandé dans un premier temps de désactiver le safe_mode, cependant, s’il est correctement configuré et que les binaires nécessaires sont accessibles, MediaSPIP devrait fonctionner correctement avec le safe_mode activé.
Modules spécifiques
Il est nécessaire d’installer certains modules PHP spécifiques, via le gestionnaire de paquet de votre distribution ou manuellement : php5-mysql pour la connectivité avec la (...)
Sur d’autres sites (8322)
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ffmpeg libz.so dependency
26 février 2014, par malaprop malapropwe are trying to install ffmpeg on our RH linux servers.
Trouble is that it works on one not on the other and we have no idea why. The working and the non working server have the same config information :
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration : —enable-gpl —enable-version3 —enable-shared —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab —extra-cflags=-I/usr/local/include —extra-ldflags=-L/usr/local/lib
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
Hyper fast Audio and Video encoderThe error we are getting is :
ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
built on Apr 19 2012 14:00:25 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)
configuration : —enable-gpl —enable-version3 —enable-shared —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab —extra-cflags=-I/usr/local/include —extra-ldflags=-L/usr/local/lib
libavutil 51. 35.100 / 51. 35.100
libavcodec 53. 61.100 / 53. 61.100
libavformat 53. 32.100 / 53. 32.100
libavdevice 53. 4.100 / 53. 4.100
libavfilter 2. 61.100 / 2. 61.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 6.100 / 0. 6.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '4598_Testvideo_MP4-H264-6MBit_AAC-44KHz-192KBit_720p.mp4' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands : mp42mp41
creation_time : 2012-01-25 10:58:21
Duration : 00:02:13.56, start : 0.000000, bitrate : 5472 kb/s
Stream #0:0(eng) : Video : h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 5280 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Video Media Handler
Stream #0:1(eng) : Audio : aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 189 kb/s
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Sound Media Handler
[buffer @ 0x3160ea0] w:1280 h:720 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param :
[scale @ 0x31629a0] w:1280 h:720 fmt:yuv420p -> w:480 h:270 fmt:yuv420p flags:0x4
[libvpx @ 0x314ab40] v0.9.6
[libvpx @ 0x314ab40] Failed to initialize encoder : ABI version mismatch
Output #0, webm, to 'outputvideo.webm' :
Metadata :
major_brand : mp42
minor_version : 0
compatible_brands : mp42mp41
creation_time : 2012-01-25 10:58:21
Stream #0:0(eng) : Video : vp8, yuv420p, 480x270 [SAR 1:1 DAR 16:9], q=-1—1, 2500 kb/s, 90k tbn, 25 tbc
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Video Media Handler
Stream #0:1(eng) : Audio : none, 44100 Hz, stereo, s16, 128 kb/s
Metadata :
creation_time : 2012-01-25 10:58:21
handler_name : Mainconcept MP4 Sound Media Handler
Stream mapping :
Stream #0:0 -> #0:0 (h264 -> libvpx)
Stream #0:1 -> #0:1 (aac -> libvorbis)
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or heightI've looked at the dependent libraries using ldd and did find one differenct. the library libz.so was not listet in the system that doesn't work. ie
/lib64/ld-linux-x86-64.so.2 (0x00000035a9000000)
libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002ae5189a8000)
libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002ae518204000)
libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002ae51840e000)
libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002ae51869c000)
libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002ae519e17000)
libc.so.6 => /lib64/libc.so.6 (0x00000035a9400000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x0000003407800000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00000035ac000000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x0000003407000000)
libm.so.6 => /lib64/libm.so.6 (0x00000035aa000000)
libogg.so.0 => /usr/local/lib/libogg.so.0 (0x00002ae51b35b000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x0000003409800000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x0000003407c00000)
libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002ae5197ba000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00000035a9c00000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00000035aa400000)
libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002ae5199c6000)
libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002ae519bce000)
libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002ae51b141000)
libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002ae51af05000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002ae51a8fe000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002ae51acd9000)
libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002ae51a687000)
libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002ae51a320000)
libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002ae51a03a000)
linux-vdso.so.1 => (0x00007ffff63f6000)as opposed to
/lib64/ld-linux-x86-64.so.2 (0x0000003074c00000)
libavcodec.so.53 => /usr/local/lib/libavcodec.so.53 (0x00002b2038eeb000)
libavdevice.so.53 => /usr/local/lib/libavdevice.so.53 (0x00002b2038746000)
libavfilter.so.2 => /usr/local/lib/libavfilter.so.2 (0x00002b2038950000)
libavformat.so.53 => /usr/local/lib/libavformat.so.53 (0x00002b2038bdf000)
libavutil.so.51 => /usr/local/lib/libavutil.so.51 (0x00002b203a368000)
libc.so.6 => /lib64/libc.so.6 (0x0000003075000000)
libfaac.so.0 => /usr/lib64/libfaac.so.0 (0x00002b203bcef000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x0000003003400000)
libmp3lame.so.0 => /usr/lib64/libmp3lame.so.0 (0x000000310ae00000)
libm.so.6 => /lib64/libm.so.6 (0x0000003075c00000)
libogg.so.0 => /usr/lib64/libogg.so.0 (0x00002b203bf01000)
libopencore-amrnb.so.0 => /usr/lib64/libopencore-amrnb.so.0 (0x00002b203bac1000)
libopencore-amrwb.so.0 => /usr/lib64/libopencore-amrwb.so.0 (0x00002b203b8ab000)
libpostproc.so.52 => /usr/local/lib/libpostproc.so.52 (0x00002b2039d0b000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003075800000)
libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x000000360ea00000)
libswresample.so.0 => /usr/local/lib/libswresample.so.0 (0x00002b2039f18000)
libswscale.so.2 => /usr/local/lib/libswscale.so.2 (0x00002b203a11f000)
libtheoradec.so.1 => /usr/local/lib/libtheoradec.so.1 (0x00002b203b693000)
libtheoraenc.so.1 => /usr/local/lib/libtheoraenc.so.1 (0x00002b203b457000)
libvorbisenc.so.2 => /usr/lib64/libvorbisenc.so.2 (0x00002b203ae50000)
libvorbis.so.0 => /usr/lib64/libvorbis.so.0 (0x00002b203b22a000)
libvpx.so.0 => /usr/lib64/libvpx.so.0 (0x00002b203abd9000)
libx264.so.120 => /usr/local/lib/libx264.so.120 (0x00002b203a871000)`enter code here`
libxvidcore.so.4 => /usr/lib64/libxvidcore.so.4 (0x00002b203a58c000)
libz.so.1 => /lib64/libz.so.1 (0x0000003076000000)
linux-vdso.so.1 => (0x00007fff6adfd000)I wanted to ask whether this has something to do with the problem. before i try to figure out how come the libz.so appears i nthe one list and not the other.
btw the ld.so.conf files are identical.
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FFMEG dumping a RTSP streaming works on Windows but not in Ubuntu
8 août 2016, par cuentafalsa7I have a camera with a
RTSPserver. When I try to save the streaming, usingFFMPEGin Windows works ; in Ubuntu,FFMPEGit doesn’t.The command, in Windows is :
ffmpeg.exe -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4In Linux :
ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mc&h264=1000-20-1280-960" -r 20 test.mp4The output in Linux is :
$ ffmpeg -i "rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960" -r 20 test.mp4
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
[rtsp @ 0x1f18340] UDP timeout, retrying with TCP
[rtsp @ 0x1f18340] Nonmatching transport in server reply
[rtsp @ 0x1f18340] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960: could not find codec parameters
Input #0, rtsp, from 'rtsp://192.168.1.10:1236/?videoapi=mr&h264=1000-20-1280-960':
Metadata:
title : Unnamed
comment : N/A
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264, none, 90k tbr, 90k tbn, 180k tbc
Output #0, mp4, to 'test.mp4':
Output file #0 does not contain any streamThe ffmpeg.exe output is :
>ffmpeg.exe
ffmpeg version N-81300-gce2217b Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.4.0 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-lib
ebur128 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfree
type --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-lib
openjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame
--enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-
libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-decklink --enable-zlib
libavutil 55. 28.100 / 55. 28.100
libavcodec 57. 51.100 / 57. 51.100
libavformat 57. 46.100 / 57. 46.100
libavdevice 57. 0.102 / 57. 0.102
libavfilter 6. 50.100 / 6. 50.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 1.100 / 2. 1.100
libpostproc 54. 0.100 / 54. 0.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'The ffmpeg output in Ubuntu is :
$ ffmpeg
ffmpeg version 2.8.6-1ubuntu2 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 5.3.1 (Ubuntu 5.3.1-11ubuntu1) 20160311
configuration: --prefix=/usr --extra-version=1ubuntu2 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
Use -h to get full help or, even better, run 'man ffmpeg'I’m using Windows 7 64 bits and Ubuntu 16.04.
I have tried to increase the suggested values but didn’t work either.
Any idea, except switching to Windows ? -
H.264 and VP8 for still image coding : WebP ?
JPEG is a very old lossy image format. By today’s standards, it’s awful compression-wise : practically every video format since the days of MPEG-2 has been able to tie or beat JPEG at its own game. The reasons people haven’t switched to something more modern practically always boil down to a simple one — it’s just not worth the hassle. Even if JPEG can be beaten by a factor of 2, convincing the entire world to change image formats after 20 years is nigh impossible. Furthermore, JPEG is fast, simple, and practically guaranteed to be free of any intellectual property worries. It’s been tried before : JPEG-2000 first, then Microsoft’s JPEG XR, both tried to unseat JPEG. Neither got much of anywhere.
Now Google is trying to dump yet another image format on us, “WebP”. But really, it’s just a VP8 intra frame. There are some obvious practical problems with this new image format in comparison to JPEG ; it doesn’t even support all of JPEG’s features, let alone many of the much-wanted features JPEG was missing (alpha channel support, lossless support). It only supports 4:2:0 chroma subsampling, while JPEG can handle 4:2:2 and 4:4:4. Google doesn’t seem interested in adding any of these features either.
But let’s get to the meat and see how these encoders stack up on compressing still images. As I explained in my original analysis, VP8 has the advantage of H.264′s intra prediction, which is one of the primary reasons why H.264 has such an advantage in intra compression. It only has i4x4 and i16x16 modes, not i8x8, so it’s not quite as fancy as H.264′s, but it comes close.
The test files are all around 155KB ; download them for the exact filesizes. For all three, I did a binary search of quality levels to get the file sizes close. For x264, I encoded with
--tune stillimage --preset placebo. For libvpx, I encoded with--best. For JPEG, I encoded with ffmpeg, then applied jpgcrush, a lossless jpeg compressor. I suspect there are better JPEG encoders out there than ffmpeg ; if you have one, feel free to test it and post the results. The source image is the 200th frame of Parkjoy, from derf’s page (fun fact : this video was shot here ! More info on the video here.).Files : (x264 [154KB], vp8 [155KB], jpg [156KB])
Results (decoded to PNG) : (x264, vp8, jpg)
This seems rather embarrassing for libvpx. Personally I think VP8 looks by far the worst of the bunch, despite JPEG’s blocking. What’s going on here ? VP8 certainly has better entropy coding than JPEG does (by far !). It has better intra prediction (JPEG has just DC prediction). How could VP8 look worse ? Let’s investigate.
VP8 uses a 4×4 transform, which tends to blur and lose more detail than JPEG’s 8×8 transform. But that alone certainly isn’t enough to create such a dramatic difference. Let’s investigate a hypothesis — that the problem is that libvpx is optimizing for PSNR and ignoring psychovisual considerations when encoding the image… I’ll encode with
--tune psnr --preset placeboin x264, turning off all psy optimizations.Files : (x264, optimized for PSNR [154KB]) [Note for the technical people : because adaptive quantization is off, to get the filesize on target I had to use a CQM here.]
Results (decoded to PNG) : (x264, optimized for PSNR)
What a blur ! Only somewhat better than VP8, and still worse than JPEG. And that’s using the same encoder and the same level of analysis — the only thing done differently is dropping the psy optimizations. Thus we come back to the conclusion I’ve made over and over on this blog — the encoder matters more than the video format, and good psy optimizations are more important than anything else for compression. libvpx, a much more powerful encoder than ffmpeg’s jpeg encoder, loses because it tries too hard to optimize for PSNR.
These results raise an obvious question — is Google nuts ? I could understand the push for “WebP” if it was better than JPEG. And sure, technically as a file format it is, and an encoder could be made for it that’s better than JPEG. But note the word “could”. Why announce it now when libvpx is still such an awful encoder ? You’d have to be nuts to try to replace JPEG with this blurry mess as-is. Now, I don’t expect libvpx to be able to compete with x264, the best encoder in the world — but surely it should be able to beat an image format released in 1992 ?
Earth to Google : make the encoder good first, then promote it as better than the alternatives. The reverse doesn’t work quite as well.
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