Recherche avancée

Médias (3)

Mot : - Tags -/collection

Autres articles (76)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (10614)

  • FFmpeg - C - Encoding video - Set aspect ratio

    22 août 2013, par Knossos

    I am decoding a video from mp2 and encoding to mp4.

    The original file :

    Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p, 720x576 [SAR 64:45 DAR 16:9]

    The resulting file :

    Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 720x576 [SAR 1:1 DAR 5:4]

    As you can see, the resolution has not changed, but the aspect ratio has.

    My question, is how can I set these values (SAR and/or DAR) ?

  • From YUV to Y4M ffmpeg adapting

    14 janvier 2014, par roberutsu

    I was used this command to convet some YUV videos in m4v, note that I was using a video in CIF format :

    ffmpeg -s cif -r 30 -i video.yuv -vcodec mpeg4 -g 30 -bf 2 -sameq video.m4v

    Now I downloaded a 720p movie and want to have the same paramethers

    ffmpeg -r 30 -i video.y4m -vcodec libx264 -g 12 -bf 2 -sameq video.m4v

    I erased "-s cif" because I read that the headers in y4m already have the resolution.
    I'm getting the error "frame hate not found".

  • ffmpeg : images to 29.97fps mpeg2, audio not sync [migrated]

    21 novembre 2011, par Andy Le

    I have spent a lot of time on this issue. Hope someone can help.

    I want to convert 3147 images + ac3 audio file into an mpeg2 video at 29.97fps (about 1m45s). My command :

    ~/ffmpeg/ffmpeg/ffmpeg -loop_input -t 105 -i v%4d.tga -i final.ac3 -vcodec mpeg2video -qscale 1 -s 400x400 -r 30000/1001 -acodec copy -y out.mpeg 2> out.txt

    However, the audio file ends before the frame sequence. Which means the video is slower then audio.

    I checked the output file with imageinfo and see :

    General
    
Complete name                    : out.mpeg
    
Format                           : MPEG-PS
    
File size                        : 7.18 MiB
    
Duration                         : 1mn 44s
    
Overall bit rate                 : 574 Kbps
    

    
Video
    
ID                               : 224 (0xE0)
    
Format                           : MPEG Video
    
Format version                   : Version 2
    
Format profile                   : Main@Main
    
Format settings, BVOP            : No
    
Format settings, Matrix          : Default
    
Format_Settings_GOP              : M=1, N=12
    
Duration                         : 1mn 44s
    
Bit rate mode                    : Variable
    
Bit rate                         : 103 Kbps
    
Width                            : 400 pixels
    
Height                           : 400 pixels
    
Display aspect ratio             : 1.000
    
Frame rate                       : 29.970 fps
    
Resolution                       : 8 bits
    
Colorimetry                      : 4:2:0
    
Scan type                        : Progressive
    
Bits/(Pixel*Frame)               : 0.021
    
Stream size                      : 1.29 MiB (18%)
    

    
Audio
    
ID                               : 128 (0x80)
    
Format                           : AC-3
    
Format/Info                      : Audio Coding 3
    
Duration                         : 1mn 44s
    
Bit rate mode                    : Constant
    
Bit rate                         : 448 Kbps
    
Channel(s)                       : 6 channels
    
Channel positions                : Front: L C R, Side: L R, LFE
    
Sampling rate                    : 44.1 KHz
    
Stream size                      : 5.61 MiB (78%)

    The log from ffmpeg shows many duplicate frames. But I don't know how to get rid of that.

    -loop_input is deprecated, use -loop 1
    
[image2 @ 0x9c17a80] max_analyze_duration 5000000 reached at 5000000
    
Input #0, image2, from 'v%4d.tga':
    
  Duration: 00:02:05.88, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: targa, bgr24, 400x400, 25 fps, 25 tbr, 25 tbn, 25 tbc
    
-loop_input is deprecated, use -loop 1
    
[ac3 @ 0x9ca5420] max_analyze_duration 5000000 reached at 5014400
    
[ac3 @ 0x9ca5420] Estimating duration from bitrate, this may be inaccurate
    
Input #1, ac3, from 'Final.ac3':
    
  Duration: 00:20:10.68, start: 0.000000, bitrate: 447 kb/s
    
    Stream #1:0: Audio: ac3, 44100 Hz, 5.1(side), s16, 448 kb/s
    
Incompatible pixel format 'bgr24' for codec 'mpeg2video', auto-selecting format 'yuv420p'
    
[buffer @ 0x9c1e060] w:400 h:400 pixfmt:bgr24 tb:1/1000000 sar:0/1 sws_param:
    
[buffersink @ 0x9dd56c0] auto-inserting filter 'auto-inserted scale 0' between the filter 'src' and the filter 'out'
    
[scale @ 0x9c178e0] w:400 h:400 fmt:bgr24 -> w:400 h:400 fmt:yuv420p flags:0x4
    
[mpeg @ 0x9d58060] VBV buffer size not set, muxing may fail
    
Output #0, mpeg, to 'out.mpeg':
    
  Metadata:
    
    encoder         : Lavf53.21.0
    
    Stream #0:0: Video: mpeg2video, yuv420p, 400x400, q=2-31, 200 kb/s, 90k tbn, 29.97 tbc
    
    Stream #0:1: Audio: ac3, 44100 Hz, 5.1(side), 448 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (targa -> mpeg2video)
    
  Stream #1:0 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=  267 fps=  0 q=1.0 size=     564kB time=00:00:08.87 bitrate= 520.6kbits/s dup=43 drop=0    
    
frame=  544 fps=542 q=1.0 size=    1186kB time=00:00:18.11 bitrate= 536.2kbits/s dup=89 drop=0    
    
frame=  821 fps=546 q=1.0 size=    1818kB time=00:00:27.36 bitrate= 544.3kbits/s dup=135 drop=0    
    
frame= 1098 fps=548 q=1.0 size=    2444kB time=00:00:36.60 bitrate= 547.0kbits/s dup=181 drop=0    
    
frame= 1376 fps=549 q=1.0 size=    3072kB time=00:00:45.87 bitrate= 548.5kbits/s dup=227 drop=0    
    
frame= 1653 fps=550 q=1.0 size=    3700kB time=00:00:55.12 bitrate= 549.9kbits/s dup=273 drop=0    
    
frame= 1930 fps=550 q=1.0 size=    4326kB time=00:01:04.36 bitrate= 550.6kbits/s dup=319 drop=0    
    
frame= 2208 fps=551 q=1.0 size=    4960kB time=00:01:13.64 bitrate= 551.8kbits/s dup=365 drop=0    
    
frame= 2462 fps=546 q=1.0 size=    5746kB time=00:01:22.11 bitrate= 573.2kbits/s dup=407 drop=0    
    
frame= 2728 fps=544 q=1.0 size=    6354kB time=00:01:30.99 bitrate= 572.1kbits/s dup=451 drop=0    
    
frame= 3007 fps=545 q=1.0 size=    6980kB time=00:01:40.28 bitrate= 570.2kbits/s dup=498 drop=0    
    
frame= 3146 fps=546 q=1.0 Lsize=    7352kB time=00:01:44.93 bitrate= 573.9kbits/s dup=521 drop=0    
    

    
video:1518kB audio:5745kB global headers:0kB muxing overhead 1.230493%

Navigation