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Richard Stallman et le logiciel libre
19 octobre 2011, par
Mis à jour : Mai 2013
Langue : français
Type : Texte
Autres articles (43)
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MediaSPIP Core : La Configuration
9 novembre 2010, parMediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...) -
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 (...) -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs
Sur d’autres sites (7692)
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What is wrong with the following ffmpeg command
14 août 2013, par BradWhat is wrong with the following ffmpeg command. Originally this had -sameq instead of the -qscale:a 0
Command :
ffmpeg -loglevel debug -threads 4 -i sample-in.mpg -ss 00:00:01 -t 00:00:05 -f image2 -y sample-frames/frame%d.png -acodec copy -qscale:a 0 -y sample.mp3
Output
ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
built on Jul 9 2013 04:36:42 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/1.2.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=cc --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-ffplay
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set libav* logging level) with argument 'debug'.
Reading option '-threads' ... matched as AVOption 'threads' with argument '4'.
Reading option '-i' ... matched as input file with argument 'sample-in.mpg'.
Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:01'.
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:05'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'image2'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option 'sample-frames/frame%d.png' ... matched as output file.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'copy'.
Reading option '-qscale:a' ... matched as option 'qscale' (use fixed quality scale (VBR)) with argument '0'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option 'sample.mp3' ... matched as output file.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set libav* logging level) with argument debug.
Applying option y (overwrite output files) with argument 1.
Last message repeated 1 times
Successfully parsed a group of options.
Parsing a group of options: input file sample-in.mpg.
Successfully parsed a group of options.
Opening an input file: sample-in.mpg.
[mpeg @ 0x7ffb4a80f200] Format mpeg probed with size=16384 and score=52
[mpeg @ 0x7ffb4a80f200] File position before avformat_find_stream_info() is 0
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2500
[mpeg @ 0x7ffb4a80f200] Probe with size=2002, packets=1 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2499
[mpeg @ 0x7ffb4a80f200] Probe with size=4043, packets=2 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2498
[mpeg @ 0x7ffb4a80f200] Probe with size=6084, packets=3 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2497
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2496
[mpeg @ 0x7ffb4a80f200] Probe with size=10166, packets=5 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2495
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2494
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2493
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2492
[mpeg @ 0x7ffb4a80f200] Probe with size=18330, packets=9 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2491
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2490
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2489
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2488
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2487
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2486
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2485
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2484
[mpeg @ 0x7ffb4a80f200] Probe with size=34658, packets=17 detected mpegvideo with score=25
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2483
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2482
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2481
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2480
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2479
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2478
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2477
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2476
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2475
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2474
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2473
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2472
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2471
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2470
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2469
[mpeg @ 0x7ffb4a80f200] probing stream 0 pp:2468
[mpeg @ 0x7ffb4a80f200] Probe with size=67266, packets=33 detected mpegvideo with score=51
[mpeg @ 0x7ffb4a80f200] probed stream 0
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 93003 in the queue
Last message repeated 3 times
[mpeg @ 0x7ffb4a80f200] first_dts 86997 not matching first dts 108018 in the queue
Last message repeated 3 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 111600 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 135360 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 156960 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 180720 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 202320 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 226080 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 247680 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 271440 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 295200 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 316800 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 340560 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 362160 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 385920 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 407520 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 431280 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 452880 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 476640 in the queue
Last message repeated 8 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 498240 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] first_dts 90000 not matching first dts 522000 in the queue
Last message repeated 9 times
[mpeg @ 0x7ffb4a80f200] max_analyze_duration 5000000 reached at 5005000 microseconds
[mpeg @ 0x7ffb4a80f200] File position after avformat_find_stream_info() is 0
Input #0, mpeg, from 'sample-in.mpg':
Duration: 00:00:05.97, start: 1.000000, bitrate: 6827 kb/s
Stream #0:0[0x1e0], 152, 1/90000: Video: mpeg1video, yuv420p, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, 104857 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc
Stream #0:1[0x1c0], 211, 1/90000: Audio: mp2, 48000 Hz, stereo, s16p, 64 kb/s
Successfully opened the file.
Parsing a group of options: output file sample-frames/frame%d.png.
Applying option ss (set the start time offset) with argument 00:00:01.
Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:05.
Applying option f (force format) with argument image2.
Successfully parsed a group of options.
Opening an output file: sample-frames/frame%d.png.
Successfully opened the file.
Parsing a group of options: output file sample.mp3.
Applying option acodec (force audio codec ('copy' to copy stream)) with argument copy.
Applying option qscale:a (use fixed quality scale (VBR)) with argument 0.
Successfully parsed a group of options.
Opening an output file: sample.mp3.
Successfully opened the file.
[buffer @ 0x7ffb4a411e40] Setting entry with key 'video_size' to value '704x480'
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pix_fmt' to value '0'
[buffer @ 0x7ffb4a411e40] Setting entry with key 'time_base' to value '1/90000'
[buffer @ 0x7ffb4a411e40] Setting entry with key 'pixel_aspect' to value '200/219'
[buffer @ 0x7ffb4a411e40] Setting entry with key 'sws_param' to value 'flags=2'
[buffer @ 0x7ffb4a411e40] Setting entry with key 'frame_rate' to value '30000/1001'
[graph 0 input from stream 0:0 @ 0x7ffb4a411de0] w:704 h:480 pixfmt:yuv420p tb:1/90000 fr:30000/1001 sar:200/219 sws_param:flags=2
[scale @ 0x7ffb4a414800] Setting 'w' to value '0'
[scale @ 0x7ffb4a414800] Setting 'h' to value '0'
[scale @ 0x7ffb4a414800] Setting 'flags' to value '0x4'
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:0 h:0 flags:'0x4' interl:0
[format @ 0x7ffb4a42aa20] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
[auto-inserted scaler 0 @ 0x7ffb4a414740] picking rgb24 out of 7 ref:yuv420p alpha:0
[auto-inserted scaler 0 @ 0x7ffb4a414740] w:704 h:480 fmt:yuv420p sar:200/219 -> w:704 h:480 fmt:rgb24 sar:200/219 flags:0x4
[png @ 0x7ffb4a831000] detected 4 logical cores
[mp3 @ 0x7ffb4a831600] Invalid audio stream. Exactly one MP3 audio stream is required.
Output #0, image2, to 'sample-frames/frame%d.png':
Metadata:
encoder : Lavf54.63.104
Stream #0:0, 0, 1/90000: Video: png, rgb24, 704x480 [SAR 200:219 DAR 880:657], 1001/30000, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
Output #1, mp3, to 'sample.mp3':
Metadata:
encoder : Lavf54.63.104
Stream #1:0, 0, 1/90000: Audio: mp2, 48000 Hz, stereo, 64 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mpeg1video -> png)
Stream #0:1 -> #1:0 (copy)
Could not write header for output file #1 (incorrect codec parameters ?): Invalid argument
Statistics: 4542608 bytes read, 2 seeksI found the code above from : http://kwlug.org/node/854
I did a few edits removing the -sameq and replacing it with -qscale:a 0 which probably is wrong. -
FFmpeg does not always fully concat video ?
25 juin 2014, par user3550401I’m trying to concat two video clips, sometimes i end up with only three fourths of the video, sometimes I only get one half, and sometimes i manage to get the whole thing. Anyone ever deal with this ? Here is my ffmpeg command :
ffmpeg -i "concat:videos/clip1.ts|videos/clip2.ts" -ar 44100 -b:a 128k -b:v 800k -vcodeclibx264 -bsf:v h264_mp4toannexb -f mpegts -t 120 videos/output.ts
I just dont understand why sometimes it works perfectly and other times i only get part of the video.
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FFMPEG not turning a series of .ppm files into a video
13 avril 2024, par Radiation Sky PlayzI don't have much of an idea of what i'm doing.
also i don't use stackoverflow so i still don't know what i'm doing xd


I'm trying to do this :
ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4
and it's making this appear :

jajoo@jajoospc:~/Documents/fff$ ffmpeg -framerate 45 -i screen_200x200_%d.ppm -c:v libx264 -r 30 -pix_fmt yuv420p output52234.mp4
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
 built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
 configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
 WARNING: library configuration mismatch
 avcodec configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libaribb24 --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-libsmbclient
 libavutil 56. 70.100 / 56. 70.100
 libavcodec 58.134.100 / 58.134.100
 libavformat 58. 76.100 / 58. 76.100
 libavdevice 58. 13.100 / 58. 13.100
 libavfilter 7.110.100 / 7.110.100
 libswscale 5. 9.100 / 5. 9.100
 libswresample 3. 9.100 / 3. 9.100
 libpostproc 55. 9.100 / 55. 9.100
[image2 @ 0x555d7e314780] decoding for stream 0 failed
[image2 @ 0x555d7e314780] Could not find codec parameters for stream 0 (Video: ppm, rgb24): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, image2, from 'screen_200x200_%d.ppm':
 Duration: 00:00:04.11, start: 0.000000, bitrate: N/A
 Stream #0:0: Video: ppm, rgb24, 45 fps, 45 tbr, 45 tbn, 45 tbc
Stream mapping:
 Stream #0:0 -> #0:0 (ppm (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 112 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 22 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 14 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 3 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 13 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 3 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
 Last message repeated 10 times
[ppm @ 0x555d7e323d40] Invalid maxval: 0
Error while decoding stream #0:0: Invalid data found when processing input
[buffer @ 0x555d7e317d40] Unable to parse option value "0x0" as image size
 Last message repeated 1 times
[buffer @ 0x555d7e317d40] Error setting option video_size to value 0x0.
[graph 0 input from stream 0:0 @ 0x555d7e3189c0] Error applying options to the filter.
Error reinitializing filters!
Error while filtering: Invalid argument
Finishing stream 0:0 without any data written to it.
[buffer @ 0x555d7e322800] Unable to parse option value "0x0" as image size
 Last message repeated 1 times
[buffer @ 0x555d7e322800] Error setting option video_size to value 0x0.
[graph 0 input from stream 0:0 @ 0x555d7e3226c0] Error applying options to the filter.
Error configuring filter graph
Conversion failed!



I to make a funny video, but when i try to make it with ffmpeg this happens
and i have NO idea what it means.