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• FFmpeg Not Creating or Appending Final HLS Segment When RTMP Stream Ends [closed]

  14 août 2024, par Arjit

  I am transcoding an RTMP stream to HLS using FFmpeg, and I have a problem : when the RTMP stream finishes, the last segment, which does not reach the target duration, is not created as a .ts file. Consequently, this last segment is not appended to the playlist file.

  


  command :

  


  fmpeg -i rtmp://localhost:1935/live/xyz -c:v libx264 -preset veryfast -b:v 400k -c:a aac -b:a 64k -s 426x240 -hls_playlist_type event -hls_time 10 -hls_list_size 0 -hls_segment_filename jack/240p_%03d.ts jack/240p.m3u8


  


  I expected that when the RTMP stream ends or when i terminate that FFmpeg process, FFmpeg would create a .ts file for the last segment, even if it is shorter than the target duration (10 seconds), and that this segment would be appended to the playlist (output.m3u8).

  


• Use specific channels from specific streams for the final stream using FFMPEG [closed]

  9 juin 2024, par Kazu-kun

  I want to create a 5.1ch audio stream from a 2ch audio stream. However I want to put a negative delay to LFE, SL and SR channels since they will be played from my bluetooth speaker, so I want to make up for the delay by giving it a negative delay.

  


  


  ffmpeg -itsoffset 0.1 -i input.mkv -i input.mkv

  


  -filter_complex “

  


  [1:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [0:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [orig5_1][delayed5_1]amerge=inputs=2,pan=5.1(side)|FL=c6|FR=c7|LFE=c2|SL=c3|SR=c4[a]”

  


  -map "[a]" -map 0:v -map 0:s -c:v copy -c:a flac -c:s copy output.mkv

  


  


  I tried taking the same input twice with the first one being delayed by 0.1 secs. With the delayed input a 5.1 audio is created and with the original another 5.1 audio is created as well. Then the two audio streams are merged with amerge and combined into a single 5.1 audio by taking delayed channels for FL and FR(These will be played from my MacBook) and by taking original channels for LFE, SL and SR(These will be played from my bluetooth JBL). Finally the video and subs streams are taken from the delayed.

  


  The above command gave a "pipe pipe pipe dqoute" error and when I entered the command again it said :

  


  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : command not found : -map

  


  


  Please give me a command for my requirement !

  


• FFmpeg synthesizes multiple videos, the final result is only sound, no picture display

  6 juillet 2023, par Halifax

  1、I first converted mp4 to ts：

  


  -i MyVideo.mp4 -vcodec copy -acodec aac -b:v 10000k MyVideo.ts


  


  2、Then scale the ts and fill the empty space：

  


  -i MyVideo.ts -vf pad=width=iw:height=ih:x=-1:y=0:color='White' -b:v 10000k MyVideo_transform.ts


  


  3、Finally use concat to merge into mp4 files：

  


  -i "concat:MyVideo_transform1.ts|MyVideo_transform2.ts" -acodec copy -vcodec copy -absf aac_adtstoasc -b:v 10000k $outputFilePath"


  


  Finally use concat to merge into mp4 files。

  


  I hope that the final merged result can see the video picture。