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  • ffmpeg-mp4box-mpeg dash plays only few segments

    30 octobre 2015, par Idris

    Need help in debugging the segment dash files

    The input was an MP4 with these details. This was recorded from a video camera, the output from the camera was mkv and we converted into MP4 after editing the audio via adobe

    • Size : 7.51 GB Frame rate : 25 frames/ second
    • Data rate : 25326kbps
    • Total bitrate : 25525kbps

    Converted this to another mp4 with this command

    ffmpeg -i "input.mp4" -s 1280x720 -c:v libx264 -b:v 750k -bf 2 -g 75 -sc_threshold 0 -an video_1280x720_750k.mp4
    

    
ffmpeg -i "input.mp4"  -c:a aac -strict experimental -b:a 96k -ar 32000 -vn audio_96k.mp4

    The output video has

    • fps : 25
    • Data rate : 761kbps
    • bitrate : 761kbps

    Then, created the segmented dash through MP4Box

    MP4Box -dash 10000 -frag 10000 -rap -segment-name video_0_1280000\segment_ video_1280x720_750k.mp4
    

    
MP4Box -dash 3000 -frag 10000 -rap -segment-name audio_0_96000\segment_ audio_96k.mp4

    The MPD generated was validated online and its perfect

    UPDATE ! Included the MPD file

    <?xml version="1.0"?>
    

    
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" minbuffertime="PT1.500S" type="static" mediapresentationduration="PT0H2M0.000S" maxsegmentduration="PT0H0M10.000S" profiles="urn:mpeg:dash:profile:full:2011">
    
 <programinformation moreinformationurl="http://gpac.sourceforge.net">
    
  
    
 </programinformation>
    

    
 <period duration="PT0H2M0.000S">
    
   <adaptationset segmentalignment="true" lang="eng">
    
     <representation mimetype="audio/mp4" codecs="mp4a.40.2" audiosamplingrate="32000" startwithsap="1" bandwidth="98434">
    
       <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
    
       <segmentlist timescale="32000" duration="319999">
    
         <initialization sourceurl="audio_0_96000/segment_init.mp4"></initialization>
    
         <segmenturl media="audio_0_96000/segment_1.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_2.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_3.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_4.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_5.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_6.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_7.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_8.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_9.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_10.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_11.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_12.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_13.m4s"></segmenturl>
    
       </segmentlist>
    
     </representation>
    
   </adaptationset>
    
  <adaptationset segmentalignment="true" maxwidth="1280" maxheight="720" maxframerate="25" par="16:9" lang="eng">
    
   <representation mimetype="video/mp4" codecs="avc3.64001f" width="1280" height="720" framerate="25" sar="1:1" startwithsap="1" bandwidth="764668">
    
    <segmentlist timescale="12800" duration="125866">
    
     <initialization sourceurl="video_0_1280000/segment_init.mp4"></initialization>
    
     <segmenturl media="video_0_1280000/segment_1.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_2.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_3.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_4.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_5.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_6.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_7.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_8.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_9.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_10.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_11.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_12.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_13.m4s"></segmenturl>
    
    </segmentlist>
    
   </representation>
    
  </adaptationset>
    

    
 </period>
    
</mpd>

    Played the video through dashjs.. I believe it just plays the initial segment and errors out as MEDIA_ERR_DECODE..MEDIA_ERR_SRC_NOT_SUPPORTED.. or some message which says start not found..

    Through chrome debugging I see that atleast 4 segments are correctly loading.. I am not sure whats going on..

    Any help in debugging the issue is really appreciated. I really can’t understand if this is a problem with the file or ffmpeg or mp4box or chrome.

    Output from chrome debugging tool

    [dash.js 1.5.1] new MediaPlayer instance has been created 
    
dash.all.js:11 Playback initiated! 
    
dash.all.js:11 Parsing complete: ( xml2json: 5ms, objectiron: 10ms, total: 0.015s) 
    
dash.all.js:11 Manifest has been refreshed at Mon Oct 26 2015 10:19:22 GMT-0400 (Eastern Daylight Time)[1445869162092]  
    
dash.all.js:11 SegmentTimeline detected using calculated Live Edge Time 
    
dash.all.js:11 MediaSource is open! 
    
dash.all.js:11 [object Event] 
    
dash.all.js:11 Duration successfully set to: 120 
    
dash.all.js:11 Added 0 inline events 
    
dash.all.js:11 video codec: video/mp4;codecs="avc3.64001f" 
    
dash.all.js:11 [video] stop 
    
dash.all.js:11 audio codec: audio/mp4;codecs="mp4a.40.2" 
    
dash.all.js:11 [audio] stop 
    
dash.all.js:11 No text data. 
    
dash.all.js:11 No fragmentedText data. 
    
dash.all.js:11 No muxed data. 
    
dash.all.js:11 [video] start 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [audio] start 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 [audio] SegmentList: 0 / 120 
    
dash.all.js:11 [video] Getting the request for time: 9.83328125 
    
dash.all.js:11 [video] Index for time 9.83328125 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 9.99996875 
    
dash.all.js:11 [audio] Index for time 9.99996875 is 0 
    
dash.all.js:11 [audio] SegmentList: 0 / 120 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 loaded audio:Media Segment:0 (200, 20ms, 6ms) 
    
dash.all.js:11 loaded video:Media Segment:0 (200, 153ms, 43ms) 
    
dash.all.js:11 loaded video:Initialization Segment:NaN (200, 0ms, 32ms) 
    
dash.all.js:11 [video] Initialization finished loading 
    
dash.all.js:11 loaded audio:Initialization Segment:NaN (200, 0ms, 34ms) 
    
dash.all.js:11 [audio] Initialization finished loading 
    
dash.all.js:11 [video] Getting the request for time: 19.6665625 
    
dash.all.js:11 [video] Index for time 19.6665625 is 1 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 19.9999375 
    
dash.all.js:11 [audio] Index for time 19.9999375 is 1 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [video] Stalling Buffer 
    
dash.all.js:11 [video] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [audio] Stalling Buffer 
    
dash.all.js:11 [audio] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 <video> loadedmetadata 
    
dash.all.js:11 Starting playback at offset: 0 
    
dash.all.js:11 [video] Getting the request for time: 29.499843750000004 
    
dash.all.js:11 [video] Index for time 29.499843750000004 is 2 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] Got enough buffer to start. 
    
dash.all.js:11 [video] seek: 0 
    
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002 
    
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120 
    
dash.all.js:11 [audio] Got enough buffer to start. 
    
dash.all.js:11 [audio] seek: 0 
    
dash.all.js:11 loaded audio:Media Segment:9.99996875 (200, 67ms, 24ms) 
    
dash.all.js:11 loaded video:Media Segment:9.83328125 (200, 71ms, 31ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 9.984 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 Start Event Controller 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 19.999968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 <video> play 
    
dash.all.js:11 [video] start 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [audio] start 
    
dash.all.js:11 <video> playing 
    
dash.all.js:11 [video] Buffered Range: 0 - 9 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 Do seek: 0.032 
    
dash.all.js:11 <video> seek 
    
dash.all.js:11 [video] Getting the request for time: 29.499843750000004 
    
dash.all.js:11 [video] Index for time 29.499843750000004 is 2 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] seek: 0.032 
    
dash.all.js:11 [audio] seek: 0.032 
    
dash.all.js:11 [video] Getting the request for time: 9 
    
dash.all.js:11 [video] Index for time 9 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] Buffered Range: 0 - 18 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 loaded video:Media Segment:19.6665625 (200, 42ms, 33ms) 
    
dash.all.js:11 <video> seeked 
    
dash.all.js:11 Start Event Controller 
    
dash.all.js:11 <video> playing 
    
dash.all.js:11 [video] Buffered Range: 0 - 28 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [audio] Getting the request for time: 19.999968 
    
dash.all.js:11 [audio] Index for time 19.999968 is 1 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002 
    
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120 
    
dash.all.js:11 loaded audio:Media Segment:19.9999375 (200, 102ms, 2ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 29.983968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 loaded audio:Media Segment:29.999906250000002 (200, 26ms, 2ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 39.999968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 loaded video:Media Segment:29.499843750000004 (200, 47ms, 7ms) 
    
dash.all.js:11 Video Element Error: MEDIA_ERR_DECODE 
    
dash.all.js:11 [video] stop 
    
dash.all.js:11 [audio] stop 
    
dash.all.js:11 Video Element Error: MEDIA_ERR_SRC_NOT_SUPPORTED 
    
dash.all.js:11 <video> play 
    
</video></video></video></video></video></video></video>

  • ffmpeg-mp4box-mpeg dash plays only few segments

    30 octobre 2015, par Idris

    Need help in debugging the segment dash files

    The input was an MP4 with these details. This was recorded from a video camera, the output from the camera was mkv and we converted into MP4 after editing the audio via adobe

    • Size : 7.51 GB Frame rate : 25 frames/ second
    • Data rate : 25326kbps
    • Total bitrate : 25525kbps

    Converted this to another mp4 with this command

    ffmpeg -i "input.mp4" -s 1280x720 -c:v libx264 -b:v 750k -bf 2 -g 75 -sc_threshold 0 -an video_1280x720_750k.mp4
    

    
ffmpeg -i "input.mp4"  -c:a aac -strict experimental -b:a 96k -ar 32000 -vn audio_96k.mp4

    The output video has

    • fps : 25
    • Data rate : 761kbps
    • bitrate : 761kbps

    Then, created the segmented dash through MP4Box

    MP4Box -dash 10000 -frag 10000 -rap -segment-name video_0_1280000\segment_ video_1280x720_750k.mp4
    

    
MP4Box -dash 3000 -frag 10000 -rap -segment-name audio_0_96000\segment_ audio_96k.mp4

    The MPD generated was validated online and its perfect

    UPDATE ! Included the MPD file

    &lt;?xml version="1.0"?>
    

    
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" minbuffertime="PT1.500S" type="static" mediapresentationduration="PT0H2M0.000S" maxsegmentduration="PT0H0M10.000S" profiles="urn:mpeg:dash:profile:full:2011">
    
 <programinformation moreinformationurl="http://gpac.sourceforge.net">
    
  
    
 </programinformation>
    

    
 <period duration="PT0H2M0.000S">
    
   <adaptationset segmentalignment="true" lang="eng">
    
     <representation mimetype="audio/mp4" codecs="mp4a.40.2" audiosamplingrate="32000" startwithsap="1" bandwidth="98434">
    
       <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"></audiochannelconfiguration>
    
       <segmentlist timescale="32000" duration="319999">
    
         <initialization sourceurl="audio_0_96000/segment_init.mp4"></initialization>
    
         <segmenturl media="audio_0_96000/segment_1.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_2.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_3.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_4.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_5.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_6.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_7.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_8.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_9.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_10.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_11.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_12.m4s"></segmenturl>
    
         <segmenturl media="audio_0_96000/segment_13.m4s"></segmenturl>
    
       </segmentlist>
    
     </representation>
    
   </adaptationset>
    
  <adaptationset segmentalignment="true" maxwidth="1280" maxheight="720" maxframerate="25" par="16:9" lang="eng">
    
   <representation mimetype="video/mp4" codecs="avc3.64001f" width="1280" height="720" framerate="25" sar="1:1" startwithsap="1" bandwidth="764668">
    
    <segmentlist timescale="12800" duration="125866">
    
     <initialization sourceurl="video_0_1280000/segment_init.mp4"></initialization>
    
     <segmenturl media="video_0_1280000/segment_1.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_2.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_3.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_4.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_5.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_6.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_7.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_8.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_9.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_10.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_11.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_12.m4s"></segmenturl>
    
     <segmenturl media="video_0_1280000/segment_13.m4s"></segmenturl>
    
    </segmentlist>
    
   </representation>
    
  </adaptationset>
    

    
 </period>
    
</mpd>

    Played the video through dashjs.. I believe it just plays the initial segment and errors out as MEDIA_ERR_DECODE..MEDIA_ERR_SRC_NOT_SUPPORTED.. or some message which says start not found..

    Through chrome debugging I see that atleast 4 segments are correctly loading.. I am not sure whats going on..

    Any help in debugging the issue is really appreciated. I really can’t understand if this is a problem with the file or ffmpeg or mp4box or chrome.

    Output from chrome debugging tool

    [dash.js 1.5.1] new MediaPlayer instance has been created 
    
dash.all.js:11 Playback initiated! 
    
dash.all.js:11 Parsing complete: ( xml2json: 5ms, objectiron: 10ms, total: 0.015s) 
    
dash.all.js:11 Manifest has been refreshed at Mon Oct 26 2015 10:19:22 GMT-0400 (Eastern Daylight Time)[1445869162092]  
    
dash.all.js:11 SegmentTimeline detected using calculated Live Edge Time 
    
dash.all.js:11 MediaSource is open! 
    
dash.all.js:11 [object Event] 
    
dash.all.js:11 Duration successfully set to: 120 
    
dash.all.js:11 Added 0 inline events 
    
dash.all.js:11 video codec: video/mp4;codecs="avc3.64001f" 
    
dash.all.js:11 [video] stop 
    
dash.all.js:11 audio codec: audio/mp4;codecs="mp4a.40.2" 
    
dash.all.js:11 [audio] stop 
    
dash.all.js:11 No text data. 
    
dash.all.js:11 No fragmentedText data. 
    
dash.all.js:11 No muxed data. 
    
dash.all.js:11 [video] start 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [audio] start 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 [audio] SegmentList: 0 / 120 
    
dash.all.js:11 [video] Getting the request for time: 9.83328125 
    
dash.all.js:11 [video] Index for time 9.83328125 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 9.99996875 
    
dash.all.js:11 [audio] Index for time 9.99996875 is 0 
    
dash.all.js:11 [audio] SegmentList: 0 / 120 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 loaded audio:Media Segment:0 (200, 20ms, 6ms) 
    
dash.all.js:11 loaded video:Media Segment:0 (200, 153ms, 43ms) 
    
dash.all.js:11 loaded video:Initialization Segment:NaN (200, 0ms, 32ms) 
    
dash.all.js:11 [video] Initialization finished loading 
    
dash.all.js:11 loaded audio:Initialization Segment:NaN (200, 0ms, 34ms) 
    
dash.all.js:11 [audio] Initialization finished loading 
    
dash.all.js:11 [video] Getting the request for time: 19.6665625 
    
dash.all.js:11 [video] Index for time 19.6665625 is 1 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 19.9999375 
    
dash.all.js:11 [audio] Index for time 19.9999375 is 1 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [video] Stalling Buffer 
    
dash.all.js:11 [video] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [audio] Stalling Buffer 
    
dash.all.js:11 [audio] Waiting for more buffer before starting playback. 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 <video> loadedmetadata 
    
dash.all.js:11 Starting playback at offset: 0 
    
dash.all.js:11 [video] Getting the request for time: 29.499843750000004 
    
dash.all.js:11 [video] Index for time 29.499843750000004 is 2 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] Got enough buffer to start. 
    
dash.all.js:11 [video] seek: 0 
    
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002 
    
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120 
    
dash.all.js:11 [audio] Got enough buffer to start. 
    
dash.all.js:11 [audio] seek: 0 
    
dash.all.js:11 loaded audio:Media Segment:9.99996875 (200, 67ms, 24ms) 
    
dash.all.js:11 loaded video:Media Segment:9.83328125 (200, 71ms, 31ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 9.984 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 Start Event Controller 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 19.999968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 <video> play 
    
dash.all.js:11 [video] start 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [audio] start 
    
dash.all.js:11 <video> playing 
    
dash.all.js:11 [video] Buffered Range: 0 - 9 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 Do seek: 0.032 
    
dash.all.js:11 <video> seek 
    
dash.all.js:11 [video] Getting the request for time: 29.499843750000004 
    
dash.all.js:11 [video] Index for time 29.499843750000004 is 2 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] seek: 0.032 
    
dash.all.js:11 [audio] seek: 0.032 
    
dash.all.js:11 [video] Getting the request for time: 9 
    
dash.all.js:11 [video] Index for time 9 is 0 
    
dash.all.js:11 [video] SegmentList: 0 / 120 
    
dash.all.js:11 [video] SegmentList: 9.83328125 / 120 
    
dash.all.js:11 [video] SegmentList: 19.6665625 / 120 
    
dash.all.js:11 [video] SegmentList: 29.499843750000004 / 120 
    
dash.all.js:11 [video] Buffered Range: 0 - 18 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 loaded video:Media Segment:19.6665625 (200, 42ms, 33ms) 
    
dash.all.js:11 <video> seeked 
    
dash.all.js:11 Start Event Controller 
    
dash.all.js:11 <video> playing 
    
dash.all.js:11 [video] Buffered Range: 0 - 28 
    
dash.all.js:11 [video] Getting the request for time: 0 
    
dash.all.js:11 [video] Index for time 0 is 0 
    
dash.all.js:11 [audio] Getting the request for time: 19.999968 
    
dash.all.js:11 [audio] Index for time 19.999968 is 1 
    
dash.all.js:11 [audio] SegmentList: 9.99996875 / 120 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] Getting the request for time: 29.999906250000002 
    
dash.all.js:11 [audio] Index for time 29.999906250000002 is 2 
    
dash.all.js:11 [audio] SegmentList: 19.9999375 / 120 
    
dash.all.js:11 [audio] SegmentList: 29.999906250000002 / 120 
    
dash.all.js:11 loaded audio:Media Segment:19.9999375 (200, 102ms, 2ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 29.983968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 loaded audio:Media Segment:29.999906250000002 (200, 26ms, 2ms) 
    
dash.all.js:11 [audio] Buffered Range: 0.032 - 39.999968 
    
dash.all.js:11 [audio] Getting the request for time: 0 
    
dash.all.js:11 [audio] Index for time 0 is 0 
    
dash.all.js:11 loaded video:Media Segment:29.499843750000004 (200, 47ms, 7ms) 
    
dash.all.js:11 Video Element Error: MEDIA_ERR_DECODE 
    
dash.all.js:11 [video] stop 
    
dash.all.js:11 [audio] stop 
    
dash.all.js:11 Video Element Error: MEDIA_ERR_SRC_NOT_SUPPORTED 
    
dash.all.js:11 <video> play 
    
</video></video></video></video></video></video></video>

  • How to keep personally identifiable information safe

    23 janvier 2020, par Joselyn Khor

    The protection of personally identifiable information (PII) is important both for individuals, whose privacy may be compromised, and for businesses that may have their reputation ruined or be liable if PII is wrongly accessed, used, or shared.

    Curious about what PII is ? Here’s your introduction to personally identifiable information.

    Due to hacking, data leaks or data thievery, PII acquired can be combined with other pieces of information to form a more complete picture of you. On an individual level, this puts you at risk of identity theft, credit card theft or other harm caused by the fraudulent use of your personal information.

    On a business level, for companies who breach data privacy laws – like Cambridge Analytica’s harvesting of millions of FB profiles – the action leads to an erosion of trust. It can also impact your financial position as heavy fines can be imposed for the illegal use and processing of personally identifiable information.

    So what can you do to ensure PII compliance ?

    On an individual level :

    1. Don’t give your data away so easily. Although long, it’s worthwhile to read through privacy policies to make sure you know what you’re getting yourself into.
    2. Don’t just click ‘agree’ when faced with consent screens, as consent screens are majorly flawed. Users mostly always opt in without reading and without being properly informed what they opt in to.
    3. Did you know you’re most likely being tracked from website to website ? For example, Google can identify you across visits and websites. One of the things you can do is to disable third party cookies by default. Businesses can also use privacy friendly analytics which halt such tracking. 
    4. Use strong passwords.
    5. Be wary of public wifi – hackers can easily access your PII or sensitive data. Use a VPN (virtual private network), which lets you create a secure connection to a server of your choosing. This allows you to browse the internet in a safe manner.

    A PII compliance checklist for businesses/organisations :

    1. Identify where all PII exists and is stored – review and make sure this is in a safe environment.
    2. Identify laws that apply to you (GDPR, California privacy law, HIPAA) and follow your legal obligations.
    3. Create operational safeguards – policies and procedures for handling PII at an organisation level ; and building awareness to focus on the protection of PII.
    4. Encrypt databases and repositories where such info is kept.
    5. Create privacy-specific safeguards in the way your organisation collects, maintains, uses, and disseminates data so you protect the confidentiality of the data.
    6. Minimise the use, collection, and retention of PII – only collect and keep PII if it’s necessary for you to perform your legal business function.
    7. Conduct privacy impact assessments (PIA) to find and prevent privacy risks (identify what and why it’s to be collected ; how the information will be secured etc.).
    8. De-identify within the scope of your data collection and analytics tools.
    9. Anonymise data.
    10. Keep your privacy policy updated.
    11. Pseudonymisation.
    12. A more comprehensive guide for businesses can be found here : https://iapp.org/media/pdf/knowledge_center/NIST_Protecting_PII.pdf

    Additional resources :

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