Scrolling text is jerky

[gdhgdhgdh]

With 1.5.0+git@82acd8f0 and this script, the scrolling text from the all add_text sources is quite jumpy. I used native here to illustrate with the simplest possible text generation

A speed of 60 pixels per second at 30fps should be really smooth, and it mostly is, but every couple of seconds, there's a judder:

#!/usr/bin/liquidsoap

set("init.allow_root",true)
set("frame.video.width", 640)
set("frame.video.height",368)
set("frame.video.samplerate",30)
set("frame.audio.size", 1470)

v = blank()

v = video.add_text.native("qwertyuiopasdfghjklzxcvbnm1234567890",speed=60,x=300,y=250,v)

output.file(%theora(quality=1), "/host/anonymous.theora", v)

I've attached a ZIP of a raw Theora video showing that every second or two, the scrolling will judder very noticably.

This doesn't seem like a typical 25 / 30fps mismatch, because it's not a regular jump.

anonymous.zip

[toots]

Hi!

We have a game plan for the next major release to fix this and other issues you reported. We plan on implementing a layer content type, similar to what is done in OBS, to make these kind of video editing automation more efficient.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.