Muxing several files with Yamb incl. chapter files

Muxing several files with Yamb incl. chapter files

 

Hi guys,

got the following problem:

I wanted to merge a streaming video, which had the video-files splitted as 1 minute files, together with the audio file.

First, I did flv extract on every file.

Then I wanted to combine them with Yamb. Here's the log:

When trying to use MP4Box itself, it says

Doesn't it support VP6f files? Any someone got another idea to mux several files including the chapter files? Avidemux doesn't care for the chapters file unfortunately and I need this, to keep the video and audio in sync.

Re: Muxing several files with Yamb incl. chapter files

 

I would use concatenate feature of (the newest version of) ffmpeg.

Use the files in their original flv container if possible.

Create a text file "mylist.txt" with all the files you want to have concatenated in the following form ( Lines starting with a dash are ignored ) :

mylist.txt:
Note that these can be either relative or absolute paths.

Copy the mylist.txt file into the same directory with ffmpeg and all of the files to be concatenated.

Then you can just mux the video with the audio.

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Edit:
I left out a step that I had forgotten about that applies to be-at.tv flv videos only.
Before concatenating, run each flv through ffmpeg in order to strip the timecodes (so that each video starts at 00:00, rather than an 01:01, or 02:01, etc.)

For example:
Do this for all the original flv files, and then concatenate the output files only by putting the filenames in the mylist.txt file.

Re: Muxing several files with Yamb incl. chapter files

 

Hey blimey,

thanks for your help.


There's one problem with be-at.tv, that I don't know if it is considered in your solution:

At be-at.tv, the videofiles often have missing frames whilte the audiofiles are correct. This is why I wanted to use the chapter files of FLVExtract to keep the original synchronity. How would ffmpeg know the original timeframes if the file itself would be e.g. only 57 seconds due to missing frames instead of one minute?

Re: Muxing several files with Yamb incl. chapter files

 

There were no "missing frames" in the sample I tried from your other thread, ben klock - like klockwork (Session003311).

Provide a link to a session with "missing frames".

Re: Muxing several files with Yamb incl. chapter files

 

Thanks a lot, I'll try it later with a session that I definitely know of missing frames. :-)