[FFmpeg-user] Concatenating MP4 Problems

[Carl Eugen Hoyos]

Young Kim <shadowing71 <at> gmail.com> writes:

> > > Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), 
> > > yuv420p, 848x480 [SAR 107:106 DAR 107:60], 799 kb/s, 
> > > 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc
> > > 
> > 
> > 
> > > Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), 
> > > yuv420p, 848x480 [SAR 427:424 DAR 427:240], 420 kb/s, 
> > > 23.98 fps, 23.98 tbr, 11988 tbn, 47.95 tbc

> Can you elaborate on what the differences here are? 

Aspect ratio and frame rate seem to differ.
(Since the error in you original post only 
mentions aspect ratio, I may be wrong and 
different frame rate is allowed.)

Carl Eugen