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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
Autres articles (17)
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Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
Supporting all media types
13 avril 2011, parUnlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)
Sur d’autres sites (3249)
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Creating files with irregular names in Segment Demuxer
19 novembre 2022, par AliI have a video stream coming from tvheadend and I record it in 10 second chunks
This is my recording command :


ffmpeg -i INPUT_PATH -f ssegment -segment_time 10 -segment_atclocktime 1 -segment_clocktime_offset 0 -write_empty_segments 1 -strftime 1 -b:v 3M -b:a 128k "TNA-%Y-%m-%d-%H-%M-%S.ts"



This command works fine for me and creates the following files for me without any problem


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- TNA-2022-11-19-20-35-20
- TNA-2022-11-19-20-35-30
- TNA-2022-11-19-20-35-40
- TNA-2022-11-19-20-35-50
- TNA-2022-11-19-20-36-00












But the input stream is H264 and this command records in MPEG-2 format
In the meantime, I lose the quality of the stream


On the other hand, if I add the -c:v libx264 -c:a aac option, irregular files are generated.
For example :


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- TNA-2022-11-19-20-36-20
- TNA-2022-11-19-20-36-33
- TNA-2022-11-19-20-36-43
- TNA-2022-11-19-20-36-53
- TNA-2022-11-19-20-36-04
- TNA-2022-11-19-20-36-14














And my software can't find the files anymore


The
-break_non_keyframe 1
option solves the problem of naming the files, but the image of the files remains fixed for a few seconds when starting

Can anyone help me ?


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How to cut video into 4M size mp4 video using ffmpeg
13 octobre 2022, par fxsshiwoI have a *.mp4 video file, which is cut to a fixed size using ffmpeg, using the following commands


'/usr/local/ffmpeg/bin/ffmpeg' '-y' '-ss' '00:00:00.00' '-i' '57066524-1.mp4' '-t' '00:00:05.00' '-vcodec' 'libx264' '-acodec' 'libmp3lame' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes6332bdc9814883qh89/pass-6332bdc98160c' '1.mp4'


but I get an error saying -


Unknown encoder 'libx264'


Here is the complete error message:


ffmpeg version 5.1 Copyright (c) 2000-2022 the FFmpeg developers
 built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-44)
 configuration: --enable-shared --enable-swscale --enable-gpl --enable-nonfree --enable-pic --prefix=/usr/local/ffmpeg --enable-version3 --enable-postproc --enable-pthreads --enable-static --enable-libx264
 libavutil 57. 28.100 / 57. 28.100
 libavcodec 59. 37.100 / 59. 37.100
 libavformat 59. 27.100 / 59. 27.100
 libavdevice 59. 7.100 / 59. 7.100
 libavfilter 8. 44.100 / 8. 44.100
 libswscale 6. 7.100 / 6. 7.100
 libswresample 4. 7.100 / 4. 7.100
 libpostproc 56. 6.100 / 56. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '57066524-1.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41
 creation_time : 2022-09-26T02:06:24.000000Z
 Duration: 00:00:26.11, start: 0.000000, bitrate: 6683 kb/s
 Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 720x720 [SAR 1:1 DAR 1:1], 6367 kb/s, 25 fps, 25 tbr, 25k tbn (default)
 Metadata:
 creation_time : 2022-09-26T02:06:24.000000Z
 handler_name : ?Mainconcept Video Media Handler
 vendor_id : [0][0][0][0]
 encoder : AVC Coding
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
 Metadata:
 creation_time : 2022-09-26T02:06:24.000000Z
 handler_name : #Mainconcept MP4 Sound Media Handler
 vendor_id : [0][0][0][0]
Unknown encoder 'libx264'




I try to install libx264 and recompile, I still get this error


[install libx264]
git clone https://code.videolan.org/videolan/x264.git
cd x264
./configure --prefix=/usr/local/x264/ --includedir=/usr/local/include --libdir=/usr/local/lib --enable-shared
./configure --prefix=/usr/softinstall/x264/ --includedir=/usr/local/include --libdir=/usr/local/lib --enable-shared

[compile ffmpeg]
wget http://www.ffmpeg.org/releases/ffmpeg-5.1.tar.gz
tar -zxvf ffmpeg-5.1.tar.gz
cd ffmpeg-5.1
./configure --enable-shared --enable-swscale --enable-gpl --enable-nonfree --enable-pic --prefix=/usr/local/ffmpeg --enable-version3 --enable-postproc --enable-pthreads --enable-static --enable-libx264 --enable-libmp3lame



My questions :


- 

- How to install ffmpeg with libx264
- How to cut video into fixed size with ffmpeg






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Options to re-encode video with new key frames
24 novembre 2022, par muralivI need to add key frames at 2 second intervals in this video.


ffprobe input-video.mp4 
ffprobe version 5.1.2 Copyright (c) 2007-2022 the FFmpeg developers
 built with Apple clang version 14.0.0 (clang-1400.0.29.102)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/5.1.2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --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
 libavutil 57. 28.100 / 57. 28.100
 libavcodec 59. 37.100 / 59. 37.100
 libavformat 59. 27.100 / 59. 27.100
 libavdevice 59. 7.100 / 59. 7.100
 libavfilter 8. 44.100 / 8. 44.100
 libswscale 6. 7.100 / 6. 7.100
 libswresample 4. 7.100 / 4. 7.100
 libpostproc 56. 6.100 / 56. 6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'input-video.mp4':
 Metadata:
 major_brand : mp42
 minor_version : 0
 compatible_brands: mp42mp41
 creation_time : 2022-11-23T10:04:47.000000Z
 Duration: 00:02:00.15, start: 0.000000, bitrate: 16302 kb/s
 Stream #0:0[0x1](eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 16174 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default)
 Metadata:
 creation_time : 2022-11-23T10:04:47.000000Z
 handler_name : ?Mainconcept Video Media Handler
 vendor_id : [0][0][0][0]
 encoder : AVC Coding
 Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
 Metadata:
 creation_time : 2022-11-23T10:04:47.000000Z
 handler_name : #Mainconcept MP4 Sound Media Handler
 vendor_id : [0][0][0][0]



I used this ffmpeg command for this purpose.


ffmpeg -i input-video.mp4 -codec:v libx264 -r 23.976 -force_key_frames "expr:gte(t,n_forced*2)" -c:a copy -y output.mp4



However, this output.mp4 now has different video bitrate (3692 kb/s) compared to the original video (16302 kb/s). How do I use the ffmpeg command to re-encode the video with key frames and with the same bitrate as original video ?