Zoompan duration acording to duration slide about ffmpeg-video-slideshow-scripts

[tanersener]

There is a TRANSITION_DURATION variable in SCRIPT OPTIONS to control zoompan duration. Did you try that?

# SCRIPT OPTIONS - CAN BE MODIFIED
WIDTH=1280
HEIGHT=720
FPS=30
TRANSITION_DURATION=1
PHOTO_DURATION=2

[kulykaldr]

maybe I asked the wrong question
but I need to set animation zoom for all slide duration what I set
If I set duration for slide for example 50sec, animate zoom duration only just about 20sec and then freeze
Thanks!

[tanersener]

If you set TRANSITION_DURATION=20 and PHOTO_DURATION=30 then each slide will be shown for 50 seconds; it will zoom for 20 seconds and then freeze for 30 seconds. Isn't that what you asked for?

[kulykaldr]

Isn't that what you asked for?
If I set transition duration = 20 and photo duration = 20
ffmpeg returns
Buffer queue overflow, dropping.78.2kbits/s speed=0.13x
and then
Error while filtering: Cannot allocate memoryme=00:00:19.66 bitrate=8637.4kbits/s speed=0.121x Failed to inject frame into filter network: Cannot allocate memory Error while processing the decoded data for stream #0:0
What I'm doing wrong?

[tanersener]

Let me correct myself first. zoompan transitions use the following scene arrangement. In this flow, zoompan filter is applied to all three phases. This means that photo is always zoomed. So basically it is not possible to freeze photo at any point by changing variables under SCRIPT OPTIONS.

Scene Arrangement (for each photo):
- fade in photo for `TRANSITION_DURATION` seconds
- show photo for `PHOTO_DURATION` seconds
- fade out photo for for `TRANSITION_DURATION` seconds

Step #5 in the scripts must be updated to achieve that. It is possible to change the order of stages and apply zoom only during fade in but it is not easy to keep zoom ratio for the other stages. You can replace the last line with the following one and see what I mean.

FULL_SCRIPT+="[stream$((c+1))fadein]scale=${WIDTH}*5:-1,zoompan=z='min(pzoom+0.002,2)':d=1:${POSITION_FORMULA}:s=${WIDTH}x${HEIGHT}[stream$((c+1))fadeinandzoom];[stream$((c+1))fadeinandzoom][stream$((c+1))][stream$((c+1))fadeout]concat=n=3:v=1:a=0[stream$((c+1))panning];"

Error while filtering: Cannot allocate memoryme=00:00:19.66 bitrate=8637.4kbits/s speed=0.121x Failed to inject frame into filter network: Cannot allocate memory Error while processing the decoded data for stream #0:0
What I'm doing wrong?

zoompan transitions consume too much memory, if enough memory is not found, scripts fail with this error. You can try decreasing width, height and fps values.

[tanersener]

I created a second zoompan transition called Zoom & Pan with Fade In/Out Transition #2 today. It is very close to your request; it applies zoompan filter only during fade in stage. You can try it if you didn't find a solution yet.

[tanersener]

OK then.

[kulykaldr]

Thanks, I'll try it.
I didn't see your answer. Sorry
You helped so much!