FLV/Speex to MP4 via remuxing

[Morbus Chron]

I don't know what muxer supports speex files, because trying the old FLV extract with MP4creator only spits out an audioless file, meaning it can't support spx files.

[bat999]

... with MP4creator only spits out an audioless file, meaning it can't support spx files.

That's right, speex isn't permitted in mp4 files. See here ---> https://en.wikipedia.org/wiki/Comparison_of_video_container_formats

[Morbus Chron]

... with MP4creator only spits out an audioless file, meaning it can't support spx files.

That's right, speex isn't permitted in mp4 files. See here ---> https://en.wikipedia.org/wiki/Comparison_of_video_container_formats

So what should it be remuxed into? The problem I had was that the FLV file and audio are not in sync, the latter stretching a certain video recorded off rtmpsuck as 7 hours 52, when the real tile was around the 3 hour mark.

[bat999]

... the FLV file and audio are not in sync, the latter stretching a certain video...

If you have Zeranoe's FFmpeg use a command like this...

ffmpeg -i foo.flv -c:v copy -c:a aac foo.mp4

But if the file is corrupt (out of sync) use some other method to fix it first, otherwise it's garbage in garbage out.