Running this command:
```
MP4Box -add vid01.ts -cat vid02.ts -new out.mp4
```
for two constant 50 FPS `.ts` files produces one file with a variable frame rate. How to keep constant 50 FPS when concatenating stream files?

Sample files (two 2-sec `.ts` files with almost empty content) uploaded to your MediaFire File Drop with a `gpacsamples` password as `samples.zip`.

MP4Box - GPAC version 2.2-revrelease

Thanks!
MP4Box concatenation changes frame rate from constant 50 to variable 49.xxx
This is a GitHub Issue
repo:gpac
owner:gpac
Title : MP4Box concatenation changes frame rate from constant 50 to variable 49.xxx
Issue date:

--- start body ---
Running this command:
```
MP4Box -add vid01.ts -cat vid02.ts -new out.mp4
```
for two constant 50 FPS `.ts` files produces one file with a variable frame rate. How to keep constant 50 FPS when concatenating stream files?

Sample files (two 2-sec `.ts` files with almost empty content) uploaded to your MediaFire File Drop with a `gpacsamples` password as `samples.zip`.

MP4Box - GPAC version 2.2-revrelease

Thanks!
--- end body ---
