Video frame shift issue

[quelx]

I have some videos from an old camera phone where the frames are vertically challenged, e.g. some of the top lines of each frame are at the bottom of the frame. Like this:

Is there a technical term for this which I can use to search google or a setting in VLC to correct for this?

I have tried searching for video [vh]sync, misaligned video frames, video frame shift, shift video vertically, and the like.

Thank you.

[Lotesdelere]

What OS ?
Which VLC version ?


Please open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also upload a short sample of a problematic file to either http://streams.videolan.org/upload/ or to Zippyshare.com (200 MB max) or to EmbedUpload.com, the latter will upload the file for you to several other hosts (use the default ones) and then post the link to the file here.

If needed cut it with DGsplit and read here about how to do it:
viewtopic.php?f=14&t=57724&p=193335#p193335
50 MB max should be enough.

[quelx]

What OS ?

OS X 10.10.3 (14D136)

Which VLC version ?

VLC 2.1.5 Rincewind

debug logs from "Window > Messages" @ http://pastebin.com/8NxKBHnr

uploaded video-2010-06-20-19-25-41.3gp, 891,480 bytes to http://streams.videolan.org/upload/

To be clear, I do not believe this is an issue with VLC. The video looks the same in mplayer, quicktime, on Google Photos, etc. I was wondering if there is a way to fix it with VLC or if there was a term for this issue I could add to my google-fu.

Thank you.

[Jean-Baptiste Kempf]

I don't know any solution for this.

[quelx]

I ended up using some ImageMagick and a few mplayer.

Dump the frames:

Code: Select all

mplayer -vo png video.3gp

Dump the audio:

Code: Select all

mplayer -vc dummy -vo null -ao pcm:file=video.wav video.3gp

Fix the frames (shifted down 85 pixels):

Code: Select all

for i in $(ls -1 *.png); do convert -roll +0+85 $i roll-$i done

Put it back together:

Code: Select all

mencoder mf://roll-*.png -mf fps=29.970 -ovc lavc -o roll-video.avi -oac mp3lame -audiofile video.wav

And for ffmpeg (which produced better results):

Code: Select all

ffmpeg -framerate 20.83 -i roll-0000%04d.png -i video.wav -c:v libx264 -c:a aac -strict experimental -b:a 64k -r 30 -pix_fmt yuv420p roll-video.mp4

[mederi]

vhs video filter can shift picture up/down
Tools > Preferences > Show settings=All > Video > Filters: [v] VHS movie effect video filter

[quelx]

vhs video filter can shift picture up/down
Tools > Preferences > Show settings=All > Video > Filters: [v] VHS movie effect video filter

That made it interesting