[FFmpeg-trac] #7326(undetermined:new): Timed meta data/MP4/ID3 lost after encoding

FFmpeg trac at avcodec.org
Tue Jul 24 07:51:00 EEST 2018

#7326: Timed meta data/MP4/ID3 lost after encoding
             Reporter:  mylostpast   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 Sir ,

 We are the leading streaming company in india currently we want use your
 ffmpeg tool to convert videos from single bit to multibit

 While doing that we are facing some issues which i have described below.

 We are using metadatainjection module provided by wowza to inject
 metadata(timed event/ID3/ text event) in live stream .While doing live
 streaming  we record that same video.

 When we open recorded video in Hex editor we see that meta data.
 which we injected , I am attaching the media file and hex editor
 screenshot with this.

 Open the mp4 file attached in hexedior and search for word slide
 you will find it

 Now if try to convert this mp4 video to lower bitrate it removes all the
 metadata injected during event.

 Is there any way by which we can convert  this video to lower bit rate
 without loosing this meta data ?

Ticket URL: <https://trac.ffmpeg.org/ticket/7326>
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