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I first converted two .WAV files into .MKV files inserting timecode for each of this file. Then I concatenated these two .MKV files as inputs (each .MKV including one timecode inside). However timecodes were not maintained in the final output.MKV. I tried:

 1. ffmpeg -f concat -i mylist.txt -c copy output.mkv  
 2. mkvmerge -o output.mkv 1.mkv + 2.mkv

with mylist.txt containing:

file '1.mkv'
file '2.mkv'

But the final file output.mkv resulting from such a concatenation has lost timecodes in case 1. In case 2, there is only one time code that has been preserved (from input 2.mkv) at the end. According to mediaInfo command line. I was expecting 2 times codes issued from 1.mkv and from 2.mkv. But is it the right approach ? (Is it even do-able ?)

To summarize, my goal is to insert multiple time codes along with / inside a single audio file (.WAV, or .MKV, or whatever). Here is a sreenshot that technically depicts my purpose enter image description here

user3497017
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  • If the timecode is stored at container-level (most likely), then the final output file, being a single container, can only have one unit of corresponding metadata. – Gyan Jun 06 '20 at 07:21
  • thanks. However, would that be possible to proceed time codes insertion within one single WAV file, as depicted in my enclosed file. (Otherwise I could introduce silences during the amount of time computed from originally expected time codes) – user3497017 Jun 08 '20 at 12:20

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