Calculation of frame rate

[yanch0712]

Does vlc need the unit_in_tick/time_scale in SPS to calculate FPS? According to H.264 protocol, I think they are optional.
But if we do not have these information in SPS, sometimes the vlc can not play the video.

[Rémi Denis-Courmont]

It depends if there are other ways to obtain timestamps.

[yanch0712]

It depends if there are other ways to obtain timestamps.

We have add timestamp to each frame sent via live555， which I think it's enough for player to calculate fps.

[Rémi Denis-Courmont]

In that case, VLC will not calculate the FPS at all. It will just use the timestamps from RTP.

[yanch0712]

In that case, VLC will not calculate the FPS at all. It will just use the timestamps from RTP.

Do you mean it's different when we use TCP or UDP(http)?

[Rémi Denis-Courmont]

No.