I have a single audio-video strip in VSE which has video part 2x longer than audio. I can not deinterlace it and have proper av-sync. Here is a more detailed description:
I'm using last Blender 2.73 and I'm working on linux (having 10+ years of linux and blender exp.). The video is recorded by Panasonic HC V750 camera in default 1080i mode. The ffmpeg -i shows the following info about this recording:
ffmpeg version 0.8.13-6:0.8.13-0ubuntu0.13.10.1, Copyright (c) 2000-2014 the Libav developers built on Jul 15 2014 13:48:35 with gcc 4.8.1 Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 50.00 (50/1) Input #0, mpegts, from '00000.MTS': Duration: 00:00:55.75, start: 0.848900, bitrate: 12290 kb/s Program 1 Stream #0.0[0x1011]: Video: h264 (High), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 50 tbc Stream #0.1[0x1100]: Audio: ac3, 48000 Hz, 5.1, s16, 384 kb/s Stream #0.2[0x1200]: Subtitle: pgssub
I've set up Blender properly to have 1920x1080 100% resolution, and I've selected 25fps, PAR 1:1, time mapping 100:100 (everything fairly standard).
Of course the video strip is twice as long. I've checked [x] deinterlace checkbox for the video strip. Now I want to have 25fps deinterlaced video, but I'm unable to set this.
Things I've tried on deinterlaced strip: - cutting it by moving right video strip handle to the length of audio doesn't work (video is just trimmed in about half) - rescaling speed of video strip using Effect->Speed control doesn't work (video is too fast).
How to make the deinterlaced video synced with audio and how to force the deinterlaced video strip to be of the same length as audio strip (which is timed in real seconds)? Another way: how to convert 1080i50 to 1080p25 using Blender only?
please help, thanks in advance