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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 (...)

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    1er décembre 2010, par

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    Le super Cron (gestion_mutu_super_cron)
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    26 avril 2011, par

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  • H.264 encoded stream in MP4 container does not play right in WMP12 Windows 7

    13 décembre 2019, par remus

    I’d like to figure out why my H.264 encoded stream in a MP4 container does not play back correctly in Window Media Player 12 in Windows 7. The file plays well in VLC and other players including WMP from Windows 10 but I’m just wondering why WMP12 from Win 7 does not play it.

    It seems that only I-type frames are displayed and blank black frames are shown instead of all P-type frames in between. If I force my device encoder to produce only I-type frames then the file plays back ok in WMP12 (Win 7) but the size of the file increases too much. What are the limits of H.264 decoder in Windows 7 ?

    I’m adding below ffprobe -show_frames video.mp4 (just a few frames but there are no reported errors by ffprobe) :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.83.100
    
  Duration: 00:00:05.51, start: 0.024000, bitrate: 513 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x480, 510 kb/s, 30.11 fps, 59.94 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=1
    
pkt_pts=2160
    
pkt_pts_time=0.024000
    
pkt_dts=2160
    
pkt_dts_time=0.024000
    
best_effort_timestamp=2160
    
best_effort_timestamp_time=0.024000
    
pkt_duration=2340
    
pkt_duration_time=0.026000
    
pkt_pos=48
    
pkt_size=2979
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=I
    
coded_picture_number=0
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=4500
    
pkt_pts_time=0.050000
    
pkt_dts=4500
    
pkt_dts_time=0.050000
    
best_effort_timestamp=4500
    
best_effort_timestamp_time=0.050000
    
pkt_duration=4320
    
pkt_duration_time=0.048000
    
pkt_pos=3027
    
pkt_size=1662
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=1
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=8820
    
pkt_pts_time=0.098000
    
pkt_dts=8820
    
pkt_dts_time=0.098000
    
best_effort_timestamp=8820
    
best_effort_timestamp_time=0.098000
    
pkt_duration=3060
    
pkt_duration_time=0.034000
    
pkt_pos=4689
    
pkt_size=1073
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=2
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=11880
    
pkt_pts_time=0.132000
    
pkt_dts=11880
    
pkt_dts_time=0.132000
    
best_effort_timestamp=11880
    
best_effort_timestamp_time=0.132000
    
pkt_duration=2970
    
pkt_duration_time=0.033000
    
pkt_pos=5762
    
pkt_size=829
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=3
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=14850
    
pkt_pts_time=0.165000
    
pkt_dts=14850
    
pkt_dts_time=0.165000
    
best_effort_timestamp=14850
    
best_effort_timestamp_time=0.165000
    
pkt_duration=3060
    
pkt_duration_time=0.034000
    
pkt_pos=6591
    
pkt_size=987
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=4
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=17910
    
pkt_pts_time=0.199000
    
pkt_dts=17910
    
pkt_dts_time=0.199000
    
best_effort_timestamp=17910
    
best_effort_timestamp_time=0.199000
    
pkt_duration=2970
    
pkt_duration_time=0.033000
    
pkt_pos=7578
    
pkt_size=1344
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=5
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=20880
    
pkt_pts_time=0.232000
    
pkt_dts=20880
    
pkt_dts_time=0.232000
    
best_effort_timestamp=20880
    
best_effort_timestamp_time=0.232000
    
pkt_duration=2970
    
pkt_duration_time=0.033000
    
pkt_pos=8922
    
pkt_size=1850
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=6
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]
    
[FRAME]
    
media_type=video
    
stream_index=0
    
key_frame=0
    
pkt_pts=23850
    
pkt_pts_time=0.265000
    
pkt_dts=23850
    
pkt_dts_time=0.265000
    
best_effort_timestamp=23850
    
best_effort_timestamp_time=0.265000
    
pkt_duration=3060
    
pkt_duration_time=0.034000
    
pkt_pos=10772
    
pkt_size=1972
    
width=720
    
height=480
    
pix_fmt=yuv420p
    
sample_aspect_ratio=N/A
    
pict_type=P
    
coded_picture_number=7
    
display_picture_number=0
    
interlaced_frame=0
    
top_field_first=0
    
repeat_pict=0
    
[/FRAME]

    Please let me know if you spot any errors in these frames that might affect playback.

    The encoded H.264 stream is created using Freescale libimxvpuapi and the MP4 container using ffmpeg.

    More information on the file :

    exiftool video.mp4 
    
ExifTool Version Number         : 10.10
    
File Name                       : video.mp4
    
Directory                       : .
    
File Size                       : 346 kB
    
File Modification Date/Time     : 2018:10:02 11:27:20+02:00
    
File Access Date/Time           : 2018:10:02 11:41:14+02:00
    
File Inode Change Date/Time     : 2018:10:02 11:27:21+02:00
    
File Permissions                : rw-r--r--
    
File Type                       : MP4
    
File Type Extension             : mp4
    
MIME Type                       : video/mp4
    
Major Brand                     : MP4  Base Media v1 [IS0 14496-12:2003]
    
Minor Version                   : 0.2.0
    
Compatible Brands               : isom, iso2, avc1, mp41
    
Movie Data Size                 : 351479
    
Movie Data Offset               : 48
    
Movie Header Version            : 0
    
Create Date                     : 0000:00:00 00:00:00
    
Modify Date                     : 0000:00:00 00:00:00
    
Time Scale                      : 1000
    
Duration                        : 5.51 s
    
Preferred Rate                  : 1
    
Preferred Volume                : 100.00%
    
Preview Time                    : 0 s
    
Preview Duration                : 0 s
    
Poster Time                     : 0 s
    
Selection Time                  : 0 s
    
Selection Duration              : 0 s
    
Current Time                    : 0 s
    
Next Track ID                   : 2
    
Track Header Version            : 0
    
Track Create Date               : 0000:00:00 00:00:00
    
Track Modify Date               : 0000:00:00 00:00:00
    
Track ID                        : 1
    
Track Duration                  : 5.51 s
    
Track Layer                     : 0
    
Track Volume                    : 0.00%
    
Matrix Structure                : 1 0 0 0 1 0 0 0 1
    
Image Width                     : 720
    
Image Height                    : 480
    
Media Header Version            : 0
    
Media Create Date               : 0000:00:00 00:00:00
    
Media Modify Date               : 0000:00:00 00:00:00
    
Media Time Scale                : 90000
    
Media Duration                  : 5.51 s
    
Media Language Code             : und
    
Handler Description             : VideoHandler
    
Graphics Mode                   : srcCopy
    
Op Color                        : 0 0 0
    
Compressor ID                   : avc1
    
Source Image Width              : 720
    
Source Image Height             : 480
    
X Resolution                    : 72
    
Y Resolution                    : 72
    
Bit Depth                       : 24
    
Video Frame Rate                : 30.109
    
Handler Type                    : Metadata
    
Handler Vendor ID               : Apple
    
Encoder                         : Lavf57.83.100
    
Avg Bitrate                     : 510 kbps
    
Image Size                      : 720x480
    
Megapixels                      : 0.346
    
Rotation                        : 0

    Many thanks !

    Please find a video sample here :

    https://www.dropbox.com/s/zehqgqhd8ychy0t/video.mp4?dl=0

  • FFMPEG Concat filter - Output video skips second file

    16 octobre 2018, par Rune Aspvik

    I am using the ffmpeg concat filter to join video files. I am aware the files must be exactly the same format for concat to work without encoding. However, the output of these two files are not seemless. The video will stop when it switches to second video file.

    Here is the output of the two video files.

    SKYbum:~ Aspvik$ ffmpeg -i /Users/Aspvik/Desktop/newIntro.mp4 -i /Users/Aspvik/Downloads/wetransfer-008789/Middle.mp4 
    
ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with Apple LLVM version 9.1.0 (clang-902.0.39.2)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Aspvik/Desktop/newIntro.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.12.100
    
  Duration: 00:00:08.87, start: 0.000000, bitrate: 7160 kb/s
    
    Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 7159 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/Aspvik/Downloads/wetransfer-008789/Middle.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    title           : Netcam Studio 1.6.1.0
    
    encoder         : Lavf57.71.100
    
  Duration: 00:00:19.47, start: 0.033008, bitrate: 676 kb/s
    
    Stream #1:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1280x720, 674 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler

    The command I’m using for the concat is :

    ffmpeg -f concat -safe 0 -i /Users/Aspvik/Desktop/files.txt -codec copy -y /Users/Aspvik/Desktop/video.mp4

    Can anyone see what could be wrong ?

  • Choose your favourite logo

    28 septembre 2018, par Matomo Core Team — Community

    We’ve been searching for a new logo and we are now down to the final three designs. We want you, the community, to help us choose our logo as we set the scene for a refreshed and vibrant new look for Matomo.

    Please choose your favourite Matomo logo from the three options below. Voting limited to once per person :)





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