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Revolution of Open-source and film making towards open film making
6 octobre 2011, par
Mis à jour : Juillet 2013
Langue : English
Type : Texte
Autres articles (111)
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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 (...) -
HTML5 audio and video support
13 avril 2011, parMediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
For older browsers the Flowplayer flash fallback is used.
MediaSPIP allows for media playback on major mobile platforms with the above (...) -
De l’upload à la vidéo finale [version standalone]
31 janvier 2010, parLe chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
Upload et récupération d’informations de la vidéo source
Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)
Sur d’autres sites (6869)
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Problem error : [out#0/image2 @ 000001b2582c3b00] Output file does not contain any stream [closed]
17 juillet 2024, par Đào Thanh Tùngi'm not any kind of developer or s.t, just a person want to download some anime video from some site to watch offline. I'm having some issue when using ffmpeg to download it.
Here's the code that i use :


D:\File App\ffmpeg-2024-07-15-git-350146a1ea-full_build\ffmpeg-2024-07-15-git-350146a1ea-full_build\bin> .\ffmpeg -protocol_whitelist https,file,tls,tcp,cryptio -i phim18.m3u8 -c copy phim18.png




And i get some issue with the output one, here's the output :


ffmpeg version 2024-07-15-git-350146a1ea-full_build-www.gyan.dev Copyright (c) 2000-2024 the FFmpeg developers
 built with gcc 13.2.0 (Rev5, 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-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libdavs2 --enable-libopenjpeg --enable-libquirc --enable-libuavs3d --enable-libxevd --enable-libzvbi --enable-libqrencode --enable-librav1e --enable-libsvtav1 --enable-libvvenc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxeve --enable-libxvid --enable-libaom --enable-libjxl --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --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-libcodec2 --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 59. 28.100 / 59. 28.100
 libavcodec 61. 10.100 / 61. 10.100
 libavformat 61. 5.101 / 61. 5.101
 libavdevice 61. 2.100 / 61. 2.100
 libavfilter 10. 2.102 / 10. 2.102
 libswscale 8. 2.100 / 8. 2.100
 libswresample 5. 2.100 / 5. 2.100
 libpostproc 58. 2.100 / 58. 2.100
[hls @ 000001efc1eb22c0] Skip ('#EXT-X-VERSION:4')
[hls @ 000001efc1eb22c0] Opening 'https://cloud.googleapiscdn.com/chunks/64ee0ea147f53204b550e609/1080/vJ9JdUdqRe7VNsVGJArCFA==:eLpGwsE9JqQv62clmyOTL_8ncGLJchKwkL2hF9qQSlXPV1DRR7xz5K2XsHpsCLL2/video0.html' for reading
[hls @ 000001efc1eb22c0] Opening 'https://cloud.googleapiscdn.com/chunks/64ee0ea147f53204b550e609/1080/s3HMZ3_g_lLMBdyeXTcFOA==:erBlcSN21rFVm7HbWRrApUjjIX8e8sAUY2fzuqUSUq5qWxkrbZaV_bffq5ucvHHz/video1.html' for reading
[hls @ 000001efc1eb22c0] Could not find codec parameters for stream 0 (Video: png, none): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, hls, from 'phim18.m3u8':
 Duration: 01:56:48.00, bitrate: 0 kb/s
 Program 0
 Metadata:
 variant_bitrate : 0
 Stream #0:0: Video: png, none, 25 tbr, 25 tbn
 Metadata:
 variant_bitrate : 0
Output #0, image2, to 'phim18.png':
[out#0/image2 @ 000001efc2773180] Output file does not contain any stream
Error opening output file phim18.png.
Error opening output files: Invalid argument



I tried change the output but still get the same result. Hope someone can help me on this, thank you !


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Reduce ffmpeg CPU usage with h265 [closed]
23 septembre 2024, par NeskelogthI have a video file to convert using
ffmpeg
on Ubuntu 22.04. The input uses the codech264
and I want to convert it toh265
(mainly for storage capacity reasons). The output offfmpeg -version
is

ffmpeg version N-113725-g37702e2066 Copyright (c) 2000-2024 the FFmpeg developers
built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.04)
configuration: --enable-nonfree --enable-cuda-nvcc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --disable-static --enable-shared --enable-libx265 --enable-gpl
libavutil 58. 39.100 / 58. 39.100
libavcodec 60. 39.101 / 60. 39.101
libavformat 60. 21.101 / 60. 21.101
libavdevice 60. 4.100 / 60. 4.100
libavfilter 9. 17.100 / 9. 17.100
libswscale 7. 6.100 / 7. 6.100
libswresample 4. 13.100 / 4. 13.100
libpostproc 57. 4.100 / 57. 4.100



I saw online that one of the options of
ffmpeg
is-threads
, but apparently it does not work, since usingffmpeg -i input.mp4 -c:v libx265 -c:a copy output.mp4
andffmpeg -i input.mp4 -c:v libx265 -c:a copy -threads 2 output.mp4
seem to be exactly the same in terms of CPU usage as shown byhtop
. Is there something wrong in my usage of-threads
?

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ffmpeg does not respect the -t option and keeps recording [closed]
21 juillet 2024, par Naman MuleyThe command I use is :


ffmpeg -f avfoundation -framerate 30 -i "2:0" -vcodec libx264 -pix_fmt yuv420p -acodec aac -strict experimental -t 10 ./recordings/tmp.mp4



With the above command, I expect the recording output to stop after 10 seconds. But the ffmpeg command keeps running and does not stop.
Feels like I am missing something basic but I have now spent 3 hours debugging and cannot figure out why.


Usecase :
I need to record my screen's video as well as audio for a specifiable amount of time.


According to the manual, putting
-t
before-i
limits the input recording and putting it after-i
limits the output recording. I believe after the-i
is the correct way to go.

Output of list devices :


ffmpeg -v verbose -f avfoundation -list_devices true -i ""
ffmpeg version 7.0.1 Copyright (c) 2000-2024 the FFmpeg developers
 built with Apple clang version 15.0.0 (clang-1500.1.0.2.5)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/7.0.1 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
 libavutil 59. 8.100 / 59. 8.100
 libavcodec 61. 3.100 / 61. 3.100
 libavformat 61. 1.100 / 61. 1.100
 libavdevice 61. 1.100 / 61. 1.100
 libavfilter 10. 1.100 / 10. 1.100
 libswscale 8. 1.100 / 8. 1.100
 libswresample 5. 1.100 / 5. 1.100
 libpostproc 58. 1.100 / 58. 1.100
[AVFoundation indev @ 0x7fdc48f047c0] AVFoundation video devices:
[AVFoundation indev @ 0x7fdc48f047c0] [0] FaceTime HD Camera (Built-in)
[AVFoundation indev @ 0x7fdc48f047c0] [1] Screwdriver Desk View Camera
[AVFoundation indev @ 0x7fdc48f047c0] [2] Capture screen 0
[AVFoundation indev @ 0x7fdc48f047c0] [3] Capture screen 1
[AVFoundation indev @ 0x7fdc48f047c0] AVFoundation audio devices:
[AVFoundation indev @ 0x7fdc48f047c0] [0] Built-in Microphone
[AVFoundation indev @ 0x7fdc48f047c0] [1] Screwdriver Microphone
[in#0 @ 0x7fdc49904080] Error opening input: Input/output error
Error opening input file .
Error opening input files: Input/output error



- 

- I tried using different codecs and pix_fmt options.
- Tried moving the
-t
before the-i
option and after. no change.






Works with only audio input :
The below command that records only the audio works out just fine.


ffmpeg -f avfoundation -i ":0" -acodec libmp3lame -t 10 ./recordings/tmp.mp3