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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 -
Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...)
Sur d’autres sites (4725)
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ffmpeg crashes with "Internal bug", "Failed to inject frame into filter network" while trying to convert PNG files into an animated gif using filters
12 août 2022, par EigentlichOraclerffmpeg version : ffmpeg version 4.2.7-0ubuntu0.1


Kernel : 5.4.0-122-lowlatency #138-Ubuntu SMP PREEMPT x86_64 x86_64 x86_64 GNU/Linux


PNG-Images : 996 pieces, all equal in size : 1000x50


Then trying to build palette using palettegen :


export filters="scale=1000:-1:flags=lanczos"
export palette=./stripes_palette.png
ffmpeg -v warning -i ./palette_source_stripes.png -vf "$filters,palettegen=stats_mode=diff" -y $palette
[Parsed_palettegen_1 @ 0x55f0eea30e00] Dupped color: FF63000D



Palette file has been created, looks good so far. Then I tried to convert all 996 PNG files into one single (space optimized) animated GIF file using paletteuse :


ffmpeg -v warning -framerate 5 -thread_queue_size 2048 -i ./tmp/temp.%04d.png -i $palette -lavfi "$filters,paletteuse=dither=bayer:bayer_scale=5:diff_mode=rectangle" -r 5 -loop -1 -y testanim.gif
Error while filtering: Internal bug, should not have happened
Failed to inject frame into filter network: Internal bug, should not have happened
Error while processing the decoded data for stream #0:0



The reason for "-framerate 5" for the input and "-r 5" for the output is : I wanted the animated GIF to use a determined time for running through animation. It already had worked out without using complex filtering, but the results were huge GIF files which are hard to handle.
But even when I avoid both framerate parameters, still the same error message occurs.


Should I look deeper into the "Dupped color" which has been mentioned ? Did anybody encounter a similar issue using ffmpeg ?
I'm not used to deal with filters (nor "complex filters") in ffmpeg, I'm very new at this, but I've found no tips regarding an ffmpeg crash like I've right here.


------------------------------- EDIT 2022-08-12/1 ---------------------


Same error occurs with current stable version
ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers


------------------------------- EDIT 2022-08-12/2 ---------------------


Found workaround, see answer below


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avformat : refactor ff_stream_encode_params_copy() to stream_params_copy()
6 août 2022, par Pierre-Anthony Lemieuxavformat : refactor ff_stream_encode_params_copy() to stream_params_copy()
Addresses http://ffmpeg.org/pipermail/ffmpeg-devel/2022-August/299726.html
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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How to decode two Dolby E audio streams simultaneously with ffmpeg ?
11 août 2022, par DavidI'm trying to decode 2 Dolby-E audio streams simultaneously.


ffmpeg -non_pcm_mode copy -i C:\vlc-record.ts -map 0:3 -map 0:4 -c:a pcm_s24le -f s24le - | ffplay -


Using
-map 0:3
it works for one at a time but when I add the second one-map 0:4
it only process the first one and there is just one stream on my dolby_e output pipe.

Is there a way to create a two streams multicanal non-pcm output from 2 Dolbys PCM streams ?


I tried to find a solution with named pipe but it seems like windows command line doesn't accept this. I also tried to merge the PCM streams but then it says
Invalid data found when processing input
.

I can't make it with 2 pass because I'll be using it with udp live video streams.


ffmpeg version 2022-03-07-git-e645a1ddb9-full_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 11.2.0 (Rev7, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 57. 22.100 / 57. 22.100
 libavcodec 59. 22.100 / 59. 22.100
 libavformat 59. 17.103 / 59. 17.103
 libavdevice 59. 5.100 / 59. 5.100
 libavfilter 8. 27.100 / 8. 27.100
 libswscale 6. 5.100 / 6. 5.100
 libswresample 4. 4.100 / 4. 4.100
 libpostproc 56. 4.100 / 56. 4.100
ffplay version 2022-03-07-git-e645a1ddb9-full_build-www.gyan.dev Copyright (c) 2003-2022 the FFmpeg developers
 built with gcc 11.2.0 (Rev7, Built by MSYS2 project)
 configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
 libavutil 57. 22.100 / 57. 22.100
 libavcodec 59. 22.100 / 59. 22.100
 libavformat 59. 17.103 / 59. 17.103
 libavdevice 59. 5.100 / 59. 5.100
 libavfilter 8. 27.100 / 8. 27.100
 libswscale 6. 5.100 / 6. 5.100
 libswresample 4. 4.100 / 4. 4.100
 libpostproc 56. 4.100 / 56. 4.100

Input #0, mpegts, from 'C:\vlc-record.ts':
 Duration: 00:00:15.76, start: 42530.445511, bitrate: 31505 kb/s
 Program 1
 Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn
 Stream #0:1: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 256 kb/s
 Stream #0:2: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, fltp, 256 kb/s
 Stream #0:3: Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s
 Stream #0:4: Audio: s302m (BSSD / 0x44535342), stereo, s32 (20 bit), 2304 kb/s
Stream mapping:
 Stream #0:3 -> #0:0 (s302m (native) -> pcm_s24le (native))
Press [q] to stop, [?] for help
Output #0, s24le, to 'pipe:':
 Metadata:
 encoder : Lavf59.17.103
 Stream #0:0: Audio: pcm_s24le, 48000 Hz, stereo, s32 (20 bit), 2304 kb/s
 Metadata:
 encoder : Lavc59.22.100 pcm_s24le
[dolby_e @ 0000026b16da0640] Stream has 2 programs (configuration 0), channels will be output in native order.
Input #0, s337m, from 'pipe:':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Audio: dolby_e, 44800 Hz, 7.1, fltp
[dolby_e @ 0000026b16d7ca80] Stream has 2 programs (configuration 0), channels will be output in native order.
 1.25 M-A: 0.000 fd= 0 aq= 292KB vq= 0KB sq= 0B f=0/0
av_interleaved_write_frame(): Broken pipe
Error writing trailer of pipe:: Broken pipe
size= 1451kB time=00:00:05.20 bitrate=2286.3kbits/s speed=3.07x
video:0kB audio:1462kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Error closing file pipe:: Broken pipe
Conversion failed!