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• FFMPEG - Read Audio File on html player while writing ?

  23 février 2018, par Nathan Ferreyrolles

  I have the project to record a streams of french radios and after read files on my website (record every weeks) I have segmented by hours and for 7 days.
  But i have 2 questions :
  When i play the mp3 file who writing at the time on my website i have a bug like -02:30:33s remain ? What’s wrong for you ?

  This is my ffmpeg code : ./ffmpeg -y -i http://broadcast.infomaniak.net/radioscoop-bourg-128.mp3 -f segment -strftime 1 -segment_atclocktime 1 -segment_time 3600 -reconnect 1 -reconnect_at_eof 1 -reconnect_delay_max 2 -timeout 200000 -acodec copy /var/www/mysite.fr/public_html/rsbourg/%A/%H.mp3

  And i would like to know a code to reconnect the record if i have a problem, because this morning the programm has stopped for nothing reasons ? I use Putty and the programm Screen for record many radios at same time :)

  Best regards :)
  (sorry for my bad english i’m french :/ )
  Nathan

• MP4 moov tracking and moof box sequence append from multiple mp4 source on the fly

  15 juillet 2021, par Ashish Dave

  Use Case is streaming the media continuously via mp4 container on the fly by appending multiple encoded mp4 chunk ([moof mdat]+)

  


  Currently When we merge two video moof + mdat where first video’s ftyp + moov has been kept the same then the player is able to play the first video properly but second video it plays video first and audie later. Issue seems with tracking information in moof.

  


  We want to provide an mp4 file as an endpoint for streaming video where we will append multiple mp4 video’s moof + mdat to the endpoint one after another. MP4 Endpoint can have a 10 hours of duration which include 1-2 minutes of video’s moof + mdat.

  


  Doubts are,

  


  How to manage the moov header to keep track of moof + mdat
How to manage the moof header for continuous streaming (or if there anyway to keep it unmodified)

  


  Note : Currently We are using all the fragmented h264 codec video with same fps rate, height, width and same audio codec for all the media content

  


• Which voice recording format should rtpengine/ffmpeg create for desktop Windows PCs ?

  6 mars 2020, par NetHead

  I would like create some telephony voice recordings from the rtpengine open-source software package.

  In particular, rtpengine uses the ffmpeg(1) open-source utility to write the voice media.

  I note that ’WAV format’ is supported, specifically PCM_S16LE (PCM signed 16-bit little endian). MP3 is also supported.

  I believe that that WAV has a maximum recording length of 6.8 hours, but the recordings should be well below this length.

  Is WAV/PCM_S16LE a suitable format which can be easily played by an application readily available on desktop PCs ?

  That is, can this be played on desktop PCs without installing non-standard applications or codecs ?

  Which voice recording format should I use, that is WAV based, MP3 or otherwise ?