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• I want FFMPEG generate the m3u8 file with the oldest segments instead of the newest

  4 juin 2021, par Sandi

  I have an FFmpeg command like this :

  


   ffmpeg -i test.mp4 -f hls -hls_time 2 -hls_wrap 10 -hls_list_size 5 test.m3u8


  


  Afaik, hls_wrap is the number of segments we want to store locally and hls_list_size is the segment listed in the m3u8 output file. The command above will generate 10 files of the video segment.

  


  [seg 0][seg 1][seg 2][seg 3][seg 4][seg 5][seg 6][seg 7][seg 8][seg 9]


  


  And inside the test.m3u8, of course, there are 5 newest segments listed.

  


  [seg 5][seg 6][seg 7][seg 8][seg 9]


  


  I want the test.m3u8 lists the oldest available segment instead of the newest. So it should contain :

  


  [seg 0][seg 1][seg 2][seg 3][seg 4]


  


  In another word, I want to preload the segments before it listed in test.m3u8.

  


  The idea is I want to rsync the output of that FFmpeg command to a different folder on the network. I want to avoid test.m3u8 contains a segment that not completely copied because of the large segment size.

  


  Please help me and pardon my English. Thank you very much !

  


• Batch file to add separate audio file to MP4 file [closed]

  30 janvier 2021, par MrRoso

  I have a couple of video files (MP4) with audio in France.
Video1.mp4, Video2.mp4, Video3.mp4, ……
In the same directory, I have the same couple of audio files in English (m4a).
Audio1.m4a, Audio2.m4a, Audio3.m4a, ……

  


  The command

  


  ffmpeg -i "Video1.mp4" -i "Audio1m4a" -map 0 -map 1:a -c copy "Out.mp4"


  


  to add the audio file to the Video file works fine, but I need to do this for each video and audio file manually.

  


  I want to do this in a batch file, like this :

  


  @Echo off
for %%i in (*.MP4) %%j in (*.m4a) do ffmpeg -i "%%i" -i "%%j" -map 0 -map 1:a -codec copy "/new/%%~nI.mp4"


  


  But I get the follow error message :
"% j" cannot be processed syntactically at this point.

  


  Also the new batch file ends in an error :

  


  @Echo off
for /F tokens=i,j %%i in (*.MP4) %%j in (*.m4a) do ffmpeg -i "%%i" -i "%%j" -map 0 -map 1:a -codec  copy "/new/%%~nI.mp4"


  


  Error Message :
"i" cannot be processed syntactically at this point.

  


  Has someone a batch file for me, which is working ?

  


  Best regards

  


• FFmpeg Batch Merge From Input Folder

  4 septembre 2022, par Parham.8

  I have this command that works perfectly fine :

  


  echo off
mkdir inputs
mkdir outputs
set "InputFolder=%~dp0inputs"
for /R "%InputFolder%" %%i in (*.mp4) do ffmpeg -i "%%i" -c copy "outputs\%%~ni.mkv"


  


  I'm trying to make this command work as well with no success :

  


  echo off
mkdir inputs
mkdir outputs
set "InputFolder=%~dp0inputs"
for /R "%InputFolder%" %%i in (*.mp4) do (ffmpeg -n -i "%%~ni.mp4" -i "%%~ni-eng.srt" -c copy -max_interleave_delta 0 -map 0 -map -0:v:1? -map -0:v:2? -map 1 -fflags +bitexact -map_metadata:g -1 -map_metadata -1 -metadata title="" -metadata comment="" -metadata:s:v title="" -metadata:s:v language="und" -metadata:s:v VENDOR_ID="" -metadata:s:a title="" -metadata:s:a:0 language="eng" -metadata:s:a:0 handler_name="English" -metadata:s:a VENDOR_ID="" -metadata:s:s:0 language="eng" "outputs\%%~ni.mkv")


  


  Any suggestions to make it work ?