different beetween mp4 files

[elahi1mahdi@yahoo.com]

hi,
what's different beetween this files ?
1.mp4
2.mp4
all browser cant paly it one of them (1.mp4) and just play audio but the other can show in browser(2.mp4)
please test it in chrome,firefox , ... to play it.

[akkers]

I can play both in VLC playerif thats any help.

[Sharc]

The files are using different encoders: 1.mp4 uses MPEG-4 Visual and 2.mp4 uses AVC.
Try these (1.mp4_new.mp4 and 2.mp4_new.mp4 are AVC encoded)

or in case your player cannot play AVC, try 1.mp4_new_visual.mp4 and 2.mp4_new_visual.mp4, which are encoded as mpeg-4 Visual:

[jagabo]

Yes, 1.mp4 uses an older MPEG 4 Part 2 codec (ASP, Divx, Xvid), 2.mp4 uses a more advanced MPEG 4 Part 10 codec (AVC, h.264).

https://en.wikipedia.org/wiki/MPEG-4_Part_2
https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC

Keep in mind that MP4 is a container, a logical box that can hold audio and video (and other things) compressed with a variety of codecs. The box has no bearing on the quality of what's inside.