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Preview is synced but final video is out of sync

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erkhamion
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Hi everyone!

I'm trying to edit a school play of my sons class.

I have footage from 2 cameras in MTS and M2T format. MTS files are 1920X1080 at 50fps and M2T files are 1440X1080 at 25fps. After several hours of editing I thought I'll make a test render to see if everything is ok. That took a whooping 5 hour rendering process producing a 3.6GB m2t file.
Playing it, the first part (m2t footage) was like in ffw. The second part (also an m2t footage) was ok. I forgot to mention that the camera shooting the m2t files was plugged into the theatres sound console, so I wanted to use that sound. But although in the preview, the MTS footage looks synced with the M2T sound, in the rendered file their not.
What am I doing wrong here?
I'm using Linux Mint 17.3 cinnamon with AMD 8320 cpu and 16GB Ram. Kdenlive version is 0.9.10 (sunab) melt is 0.9.3 and ffmpeg version is N-80283-g84efdab
kalimerox
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I dont know if that solves the issue, but i had always best results with kdenlive 0.9.8.x versions of the program....
erkhamion
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kalimerox wrote:I dont know if that solves the issue, but i had always best results with kdenlive 0.9.8.x versions of the program....


Thank you for the intel... I have done some further research and found out that for the "FFW effect" it may be the footage responsible. I tried to transcode that part and it worked!

Still not able to sync audio though... This project is urgent so I'll sacrifice sound quality in favour of time and use each footages individual sound.
But for future usage, I'd like to know if there is a solution to this problem. Any ideas?
kalimerox
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not a solution in the box, but what i usually do with sound:

i export my final video, export sound, then import both into ardour, edit my sound / do sound design (AND CHECK THE SYNC HERE on the video monitor of ardour (which is xjadeo...)...), and then
just "glue" the new sound to the video with avidemux or some other muxer...

good luck


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