Thread: How to merge FLV or MP4 (MPEG-4 AVC + AAC) files (or convert, then merge)
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Old 04-13-2011, 07:29 AM
cmdj1982 cmdj1982 is offline
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Re: How to merge FLV or MP4 (MPEG-4 AVC + AAC) files (or convert, then merge)

Yay! I found a solution to my problem on another site. I'm just excited so I'm posting the solution if anyone else has this issue:

"You could try muxing it into .mkv container, and join it (with mkvmergeGUI), export the streams and then use YAMB to switch containers"

Final process for me:

Download media
Extract to h.264/aac with FLVExtract
Mux/combine streams to mp4 with Yamb
Merge/mux all desired mp4s together with MKVToolNix
Re-extract stream to h.264/aac with MKVExtract GUI2
Re-mux/combine streams to mp4 with Yamb

I now have one merged mp4 with seamless audio and video, and all without re-encoding a single frame throughout the entire process!
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