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• how too download this link with ffmpeg

  27 décembre 2020, par Behrad kabiri

  i want download video with this command in ffmpeg :

  


  ffmpeg -i https://msx.namava.ir/hvod/2020/12/e9936676-eea2-44bd-b17b-dc5e58fd000d/v_854.mp4/index-v1-a1.m3u8?x=EgvsRR7zZLXNoaz49v4D05BwcjHwPaNSOtkB9y98QGOIB_EyAhV_hc44Z4McLT_FTwzBWxpaK1WlNgSBkLd415LU1jRGz0yFNhciw_SDSwgj6OlAQCARiRIb9UU8XMh_dMXKr4KncBfgwnYLMOlUn6zfSa3ltot63vKiuw0CUpU1 -vcodec copy output.mp4

  


  but recive this eror :

  


  [https @ 00000242dbcfeec0] HTTP error 420
https://msx.namava.ir/hvod/2020/12/e9936676-eea2-44bd-b17b-dc5e58fd000d/v_854.mp4/index-v1-a1.m3u8?x=EgvsRR7zZLXNoaz49v4D05BwcjHwPaNSOtkB9y98QGOIB_EyAhV_hc44Z4McLT_FTwzBWxpaK1WlNgSBkLd415LU1jRGz0yFNhciw_SDSwgj6OlAQCARiRIb9UU8XMh_dMXKr4KncBfgwnYLMOlUn6zfSa3ltot63vKiuw0CUpU1 : Server returned 4XX Client Error, but not one of 400,1,3,4

  


  please help me

  


• FFmpeg HLS streaming - Why the program date time of older segment changing when re-streaming after discontinuity

  9 novembre 2020, par Suriya Krish

  Following is the ffmpeg command to stream the data.

  


  ffmpeg -re -f avfoundation 
-framerate 30 -i 0 
-codec:v h264_videotoolbox -x264-params keyint=120:scenecut=0 
-codec:a copy -f hls 
-hls_list_size 60 
-hls_time 10 
-hls_flags delete_segments 
-hls_flags +append_list 
-hls_flags +discont_start 
-hls_flags +program_date_time 
-strftime 1 
-strftime_mkdir 1 
-hls_segment_filename 
'%Y%m%dT%H%M%S%z.ts' playlist.m3u8


  


  Following is the playlist.m3u8 content which generated for few seconds.

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-DISCONTINUITY
#EXT-X-DISCONTINUITY
#EXTINF:10.000000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:07:53.000+0530
20201109T220753+0530.ts
#EXTINF:10.000000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:08:03.000+0530
20201109T220803+0530.ts
#EXT-X-ENDLIST


  


  When the re-stream happens(in case of restarting the streaming service), the program date time of older segments(before #EXT-X-DISCONTINUITY) also get changed like below, which is unexpected.

  


  #EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXT-X-DISCONTINUITY
#EXT-X-DISCONTINUITY
#EXTINF:10.000000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:12:50.633+0530
20201109T220753+0530.ts
#EXTINF:10.000000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:13:00.633+0530
20201109T220803+0530.ts
#EXT-X-DISCONTINUITY
#EXTINF:10.000000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:13:12.000+0530
20201109T221312+0530.ts
#EXTINF:5.400000,
#EXT-X-PROGRAM-DATE-TIME:2020-11-09T22:13:22.000+0530
20201109T221322+0530.ts
#EXT-X-ENDLIST


  


  Why the program date time of older segment should change ? Should we add any arguments in ffmpeg command to handle this ?

  


• ffmpeg, live MPEG-TS demux & decode

  8 mai 2017, par NadavRub

  Environment

  • Ubuntu-14
  • C++
  • ffmpeg

  Use-case

  • Live SPTS is received via UDP by a 3rd party module
  • TS Packets are received iteratively
  • The TS Video (ES) should be decoded in minimal latency

  Considered Implementation

  • Upon TS packet reception, immediately push it to the TS demux
  • Once enough packets are received the video format is resolvable, create the video codec
  • Push each video packet into the video decoder
  • Once enough video packets were processed the video codec result a valid output frame

  Problem at-hand

  Can this be done w/ ffmpeg ?!?!, … using “avformat_open_input” mandate a file to read from… I need a way where I can iteratively push packets to the TS demuxer ( w/ minimal latency )…

  Does ffmpeg support the above mentioned use-case ? How ?