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  • 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 (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

Sur d’autres sites (8632)

  • How to detect anamorphic video with FFProbe ?

    29 mai 2015, par FlavorScape

    This is the output I get using FFProbe for a video I’m certain is anamorphic. I’ve converted it as a test with ffmpeg and the results are consistent with the video having a different PAR and DAR (video is squished). I ran some command line params to fix anamorphic video and it worked. Possibly my diagnosis is incorrect, the PAR and DAR are just plain wrong ?

    The code I used to "correct" the anamamorphic is

    --custom-anamorphic --display-width 1280 --keep-display-aspect --modulus 8 --crop 0:0:0:0

    Is there an additional command with FFProbe to detect for anamorphic ? So far I’m just seeing if the sample_aspect_ratio and display_aspect_ratio are the same or not.

    Additionally, a ratio of 0:1 seems incorrect. My video is not infinitely wide. Is there a bug with FFProbe output ?

    This is the command

    -print_format json -show_format -show_streams {originalFilePath}

    FFProbe version N-54233-g86190af built on Jun 27 2013 outputs the following :

    "Output{
    
    \"streams\": [
    
        {
    
            \"index\": 0,
    
            \"codec_name\": \"h264\",
    
            \"codec_long_name\": \"H.264/AVC/MPEG-4AVC/MPEG-4part10\",
    
            \"profile\": \"Main\",
    
            \"codec_type\": \"video\",
    
            \"codec_time_base\": \"1/5994\",
    
            \"codec_tag_string\": \"avc1\",
    
            \"codec_tag\": \"0x31637661\",
    
            \"width\": 1280,
    
            \"height\": 720,
    
            \"has_b_frames\": 0,
    
            \"sample_aspect_ratio\": \"0: 1\",
    
            \"display_aspect_ratio\": \"0: 1\",
    
            \"pix_fmt\": \"yuv420p\",
    
            \"level\": 31,
    
            \"r_frame_rate\": \"2997/100\",
    
            \"avg_frame_rate\": \"2997/100\",
    
            \"time_base\": \"1/2997\",
    
            \"start_pts\": 0,
    
            \"start_time\": \"0.000000\",
    
            \"duration_ts\": 204100,
    
            \"duration\": \"68.101435\",
    
            \"bit_rate\": \"3894381\",
    
            \"nb_frames\": \"2041\",
    
            \"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
    
            },
    
            \"tags\": {
    
                \"creation_time\": \"2013-05-0318: 33: 37\",
    
                \"language\": \"eng\",
    
                \"handler_name\": \"AppleAliasDataHandler\"
    
            }
    
        },
    
        {
    
            \"index\": 1,
    
            \"codec_name\": \"aac\",
    
            \"codec_long_name\": \"AAC(AdvancedAudioCoding)\",
    
            \"codec_type\": \"audio\",
    
            \"codec_time_base\": \"1/44100\",
    
            \"codec_tag_string\": \"mp4a\",
    
            \"codec_tag\": \"0x6134706d\",
    
            \"sample_fmt\": \"fltp\",
    
            \"sample_rate\": \"44100\",
    
            \"channels\": 2,
    
            \"bits_per_sample\": 0,
    
            \"r_frame_rate\": \"0/0\",
    
            \"avg_frame_rate\": \"0/0\",
    
            \"time_base\": \"1/44100\",
    
            \"start_pts\": 0,
    
            \"start_time\": \"0.000000\",
    
            \"duration_ts\": 3003392,
    
            \"duration\": \"68.104127\",
    
            \"bit_rate\": \"125304\",
    
            \"nb_frames\": \"2933\",
    
            \"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
    
            },
    
            \"tags\": {
    
                \"creation_time\": \"2013-05-0318: 33: 37\",
    
                \"language\": \"eng\",
    
                \"handler_name\": \"AppleAliasDataHandler\"
    
            }
    
        }
    
    ],
    
    \"format\": {
    
        \"filename\": \"\\\\\\\\dell690\\\\vsf\\\\_asset_intake\\\\v2\\\\ed69c939-4fe1-40dd-a045-db72ed2e0009\\\\original\\\\USTC_Overview2.mov\",
    
        \"nb_streams\": 2,
    
        \"format_name\": \"mov,
    
        mp4,
    
        m4a,
    
        3gp,
    
        3g2,
    
        mj2\",
    
        \"format_long_name\": \"QuickTime/MOV\",
    
        \"start_time\": \"0.000000\",
    
        \"duration\": \"68.100000\",
    
        \"size\": \"34267583\",
    
        \"bit_rate\": \"4025560\",
    
        \"tags\": {
    
            \"major_brand\": \"qt\",
    
            \"minor_version\": \"537199360\",
    
            \"compatible_brands\": \"qt\",
    
            \"creation_time\": \"2013-05-0318: 33: 37\"
    
        }
    
    }
    
}"

  • ffmpeg php - shell_exec returns Permission Denied

    21 juin 2013, par Sotiris Akis Mitracos

    i'm integrating ffmpeg into my php webapp (on a windows server). Calling the library through shell_exec like this

    $out_shell = shell_exec("$ffmpeg myfile.avi 2>&1");

    i receive the following output :

      ffmpeg version N-54117-gf9739a3 Copyright (c) 2000-2013 the FFmpeg developers
    
  built on Jun 19 2013 23:42:15 with gcc 4.7.3 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --   enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52. 37.101 / 52. 37.101
    
  libavcodec     55. 16.100 / 55. 16.100
    
  libavformat    55.  9.100 / 55.  9.100
    
  libavdevice    55.  2.100 / 55.  2.100
    
  libavfilter     3. 77.101 /  3. 77.101
    
  libswscale      2.  3.100 /  2.  3.100
    
  libswresample   0. 17.102 /  0. 17.102
    
  libpostproc    52.  3.100 / 52.  3.100
    
C:\ffmpeg: Permission denied

    what's wrong with the code ? if i run ffmpeg myfile.avi 2>&1 in cmd, I can also read video's meta-data.

    Could anybody help me ?
    thank you

  • How should I add a transparent watermark.png over my RTMP h264 stream with ffmpeg ?

    16 juin 2013, par RoelandP

    I have a Raspberry Pi with the new camera module hooked up to (in this case) Bambuser. You can see the stream here, it's from a windmill in The Netherlands (camera position will be better within a few weeks).

    I succesfully have the stream running, but now I want to add an image (alpha transparent png) on top of the input-stream which is piped to ffmpeg to be streamed to Bambuser.

    I currently use the following command (user specific details wiped out) to succesfully stream the input from the Raspberry Camera module (it's great, HD & all, hardware rendering) to Bambuser, following the great tutorial by Slickstreamer :

    raspivid -t 999999999 -w 960 -h 540 -fps 25 -b 500000 -o - | ffmpeg  -i - -vcodec copy -an -metadata title="STREAM NAME" -f flv rtmp://USER_X.fme.bambuser.com/b-fme/USER_STREAM_KEY_X

    I followed the docs about ffmpeg and it seems to me I should use the '-vf'-command to apply the 'movies :' filter, like so :

    raspivid -t 999999999 -w 960 -h 540 -fps 25 -b 500000 -o - | ffmpeg  -i - -vf "movie='/home/USER/watermark.png' [logo]; [in][logo] overlay=main_w-overlay_w-10:10 [out]" -vcodec copy -an -metadata title="STREAM NAME" -f flv rtmp://USER_X.fme.bambuser.com/b-fme/USER_STREAM_KEY_X

    and various other -vf commands, like '-vf vflip' or '-vf mandelbrot'. But it doesn't seem to work, as the stream just shows the direct input from the Raspberry Camera.

    This is the output when started with the following -vf command :

    raspivid -t 999999999 -w 960 -h 540 -fps 25 -b 500000 -o - | ffmpeg -i - -vcodec copy -vf 'movie=0:png:/home/USER/watermark.png [watermark];[in] [watermark]overlay=0:0:1[out]' -an -metadata title="STREAM NAME" -f flv rtmp://USER_X.fme.bambuser.com/b-fme/USER_STREAM_KEY_X
    ffmpeg version N-54036-g6c4516d Copyright (c) 2000-2013 the FFmpeg developers
  built on Jun 15 2013 XX:XX with gcc 4.6 (Debian 4.6.3-14+rpi1)
  configuration : 
  libavutil      52. 35.101 / 52. 35.101
  libavcodec     55. 16.100 / 55. 16.100
  libavformat    55.  8.102 / 55.  8.102
  libavdevice    55.  2.100 / 55.  2.100
  libavfilter     3. 77.101 /  3. 77.101
  libswscale      2.  3.100 /  2.  3.100
  libswresample   0. 17.102 /  0. 17.102
[h264 @ 0x1917cc0] max_analyze_duration 5000000 reached at 5000000 microseconds
Input #0, h264, from 'pipe :' :
  Duration : N/A, bitrate : N/A
    Stream #0:0 : Video : h264 (High), yuv420p, 960x540, 25 fps, 25 tbr, 1200k tbn, 50 tbc
Output #0, flv, to 'rtmp ://USER_X.fme.bambuser.com/b-fme/USER_STREAM_KEY_X' :
  Metadata :
    title : STREAM NAME
    encoder : Lavf55.8.102
    Stream #0:0 : Video : h264 ([7][0][0][0] / 0x0007), yuv420p, 960x540, q=2-31, 25 fps, 1k tbn, 1200k tbc
Stream mapping :
  Stream #0:0 -> #0:0 (copy)
frame= 2344 fps= 27 q=-1.0 size=    4827kB time=00:01:33.72 bitrate= 421.9kbits/s

    As mentioned above, other -vf filters also don't seem to apply on the output stream on Bambuser, I think I fundamentally do something wrong here.

    1. Should I map the Raspivid-stream and map the image 'watermark.png' on top of that ? Would that be the solution ? Anyone experience with this ?

    Thank you very much for your thoughts in advance.

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