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Autres articles (32)
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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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Ecrire une actualité
21 juin 2013, parPrésentez les changements dans votre MédiaSPIP ou les actualités de vos projets sur votre MédiaSPIP grâce à la rubrique actualités.
Dans le thème par défaut spipeo de MédiaSPIP, les actualités sont affichées en bas de la page principale sous les éditoriaux.
Vous pouvez personnaliser le formulaire de création d’une actualité.
Formulaire de création d’une actualité Dans le cas d’un document de type actualité, les champs proposés par défaut sont : Date de publication ( personnaliser la date de publication ) (...) -
Publier sur MédiaSpip
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
Sur d’autres sites (5421)
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Playback FFmpeg stream through UDP
11 juillet 2020, par Andrew RaleighI'm using the following command to send ffmpeg data :


./ffmpeg -i "" -pix_fmt yuv420p -tune zerolatency -preset ultrafast -f mpegts udp://127.0.0.1:23000

I then transmit and receive it to another computer through the srt protocol, and read it back on the end-point.


I play back with
.\ffplay.exe -i udp://127.0.0.1:23000 -loglevel 40and don't see a video. I can see data coming in from WireShark though. This is the log output :

ffplay version N-98438-gc6cdfdf9c3 Copyright (c) 2003-2020 the FFmpeg developers
 built with gcc 10.1.0 (Rev3, Built by MSYS2 project)
 configuration: --cc='ccache gcc' --cxx='ccache g++' --disable-autodetect --enable-amf --enable-bzlib --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-iconv --enable-lzma --enable-nvenc --enable-schannel --enable-zlib --enable-sdl2 --enable-ffnvcodec --enable-nvdec --enable-gmp --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libaom --disable-debug --enable-libsrt --extra-libs=-liconv --enable-version3
 libavutil 56. 55.100 / 56. 55.100
 libavcodec 58. 94.100 / 58. 94.100
 libavformat 58. 48.100 / 58. 48.100
 libavdevice 58. 11.101 / 58. 11.101
 libavfilter 7. 87.100 / 7. 87.100
 libswscale 5. 8.100 / 5. 8.100
 libswresample 3. 8.100 / 3. 8.100
Initialized direct3d renderer.
[mpegts @ 000002130b5eae00] Unable to seek back to the startf=0/0

....

[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20791500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20794500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20800500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.=0/0
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20805000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20809500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20812500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 2 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20820000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20824500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.=0/0
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20829000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20838000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20842500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20847000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20853000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20857500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.=0/0
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20862000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20866500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20871000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20875500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20880000).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] Packet corrupt (stream = 0, dts = 20884500).
[mpeg2video @ 000002130b612300] Invalid frame dimensions 0x0.
 Last message repeated 1 times
[mpegts @ 000002130b5eae00] changing packet size to 204 0B f=0/0
[mpegts @ 000002130b5eae00] changing packet size to 188
[mpegts @ 000002130b5eae00] changing packet size to 204 0B f=0/0
[mpegts @ 000002130b5eae00] changing packet size to 188 0B f=0/0
[mpegts @ 000002130b5eae00] changing packet size to 204 0B f=0/0
[mpegts @ 000002130b5eae00] changing packet size to 188 0B f=0/0


FFPlay and FFProbe both output the above. Usually FFPlay would show the video playing back, but in this case I get nothing. Any thoughts as to why ?


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Problems with video playback using the ffplay
7 octobre 2023, par Anzor Gergoveveryone. I have problems with video playback using the ffplay. Used the following command



ffplay -i input.avi



But the following error occurred.



ffplay version N-87353-g183fd30 Copyright (c) 2003-2017 the FFmpeg developers
 built with gcc 7.2.0 (GCC)
 configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --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-libxml2 --enable-libzimg --enable-lzma --enable-zlib
 libavutil 55. 76.100 / 55. 76.100
 libavcodec 57.106.101 / 57.106.101
 libavformat 57. 82.101 / 57. 82.101
 libavdevice 57. 8.101 / 57. 8.101
 libavfilter 6.105.100 / 6.105.100
 libswscale 4. 7.103 / 4. 7.103
 libswresample 2. 8.100 / 2. 8.100
 libpostproc 54. 6.100 / 54. 6.100
[avi @ 00000000024bd9e0] Could not find codec parameters for stream 0 (Video: none (HEVC / 0x43564548), none, 1920x1080, 1697 kb/s): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, avi, from 'c:\problem.avi':
 Duration: 00:00:25.00, start: 0.000000, bitrate: 1701 kb/s
 Stream #0:0: Video: none (HEVC / 0x43564548), none, 1920x1080, 1697 kb/s, 30.92 fps, 30.92 tbr, 30.92 tbn, 30.92 tbc
No codec could be found with id 0
Failed to open file 'c:\problem.avi' or configure filtergraph



This video is playable without any problems via the VLC, Media Player Classic. 
After trying to find out more information about the video file, I used ffprobe command



ffprobe -v 0 c:\problem.avi -print_format json -show_format -show_streams

{
 "streams": [
 {
 "index": 0,
 "codec_type": "video",
 "codec_tag_string": "HEVC",
 "codec_tag": "0x43564548",
 "width": 1920,
 "height": 1080,
 "has_b_frames": 0,
 "sample_aspect_ratio": "0:1",
 "display_aspect_ratio": "0:1",
 "level": -99,
 "r_frame_rate": "773/25",
 "avg_frame_rate": "773/25",
 "time_base": "25/773",
 "start_pts": 0,
 "start_time": "0.000000",
 "duration_ts": 773,
 "duration": "25.000000",
 "bit_rate": "1697304",
 "nb_frames": "773",
 "disposition": {
 "default": 0,
 "dub": 0,
 "original": 0,
 "comment": 0,
 "lyrics": 0,
 "karaoke": 0,
 "forced": 0,
 "hearing_impaired": 0,
 "visual_impaired": 0,
 "clean_effects": 0,
 "attached_pic": 0,
 "timed_thumbnails": 0
 }
 }
 ],
 "format": {
 "filename": "c:\\bin\\Virtual\\problem\\problem.avi",
 "nb_streams": 1,
 "nb_programs": 0,
 "format_name": "avi",
 "format_long_name": "AVI (Audio Video Interleaved)",
 "start_time": "0.000000",
 "duration": "25.000000",
 "size": "5318210",
 "bit_rate": "1701827",
 "probe_score": 100
 }
}



What could be the problem with this videofile ?


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Encoding a readable movie by QuickTime using FFMPEG
3 octobre 2014, par itamarbI’m trying to encode an image sequence using the following command :
ffmpeg.exe -i %d.png -f mp4 -vcodec h264 test.mp4However, QuickTime failed to open this file or sometimes play a black movie, while this movie plays great in VLC player. Any suggestions how to make it play well in QuickTime ?
Here is the output :
ffmpeg.exe -i %d.png -f mp4 -vcodec libx264 13.mp4
ffmpeg version N-49044-g89afa63 Copyright (c) 2000-2013 the FFmpeg developers
built on Jan 19 2013 20:36:06 with gcc 4.7.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libg
sm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --e
nable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --e
nable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --en
able-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable
-libxavs --enable-libxvid --enable-zlib --enable-filter=frei0r
libavutil 52. 15.100 / 52. 15.100
libavcodec 54. 89.100 / 54. 89.100
libavformat 54. 61.101 / 54. 61.101
libavdevice 54. 3.102 / 54. 3.102
libavfilter 3. 32.101 / 3. 32.101
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[image2 @ 0221b940] max_analyze_duration 5000000 reached at 5000000 microseconds
Input #0, image2, from '%d.png':
Duration: 00:01:19.36, start: 0.000000, bitrate: N/A
Stream #0:0: Video: png, rgb24, 639x480, 25 fps, 25 tbr, 25 tbn, 25 tbc
[libx264 @ 0221edc0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE
4.2 AVX
[libx264 @ 0221edc0] profile High 4:4:4 Predictive, level 3.0, 4:4:4 8-bit
[libx264 @ 0221edc0] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Cop
yleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
ma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 in
terlaced=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=25 scenecu
t=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 '13.mp4':
Metadata:
encoder : Lavf54.61.101
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv444p, 639x480, q=-1--1
, 12800 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png -> libx264)
Press [q] to stop, [?] for help
frame= 76 fps=0.0 q=28.0 size= 3kB time=00:00:00.96 bitrate= 22.3kbits/
frame= 156 fps=155 q=28.0 size= 7kB time=00:00:04.16 bitrate= 14.7kbits/
frame= 219 fps=145 q=28.0 size= 12kB time=00:00:06.68 bitrate= 14.1kbits/
frame= 283 fps=141 q=28.0 size= 16kB time=00:00:09.24 bitrate= 14.2kbits/
frame= 352 fps=140 q=28.0 size= 25kB time=00:00:12.00 bitrate= 17.4kbits/
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