Just thought I'd share this.
Not exactly earth shattering but sure saved me a lot of trouble.
Client gave me a tape with about 60 still with some panning and fade in/out captions. Problem was he wanted it set to music and the music was about 60 seconds longer than the video. Rather than go through the whole thing and recreate all the assets and redo the whole thing I just tried strecthing the whole thing to the length of the music.
Now that worked a treat except the animated titles and the cuts started to look a bit jumpy. So I tried applying motion blur on the video bus and hey now it looks great. The effect has been to turn all the cuts into very short dissolves which is much more pleasant to the eye and also got rid of a wierd interlace / color strobing problem that I just couldn't figure out.
The color strobing problem is interesting. These are stills and this one has part of a roof with patterned tiles that are almost horizontal. Before it was slowed down they are 100 % stable. After slo mo the color flickers when I go through it frame by frame. It would seem that alternat colors have ended upon alternate lines i.e. in alternate fields and VV is not de-interlacing before generating the new frames needed by the slo mo.
I could probably get around this by rendering it 25p first and then doing the slo mo except that would screw up the parts that do have motion. Seing as how the motion blur fixed the problem I think I'll leave well enough alone.
Not exactly earth shattering but sure saved me a lot of trouble.
Client gave me a tape with about 60 still with some panning and fade in/out captions. Problem was he wanted it set to music and the music was about 60 seconds longer than the video. Rather than go through the whole thing and recreate all the assets and redo the whole thing I just tried strecthing the whole thing to the length of the music.
Now that worked a treat except the animated titles and the cuts started to look a bit jumpy. So I tried applying motion blur on the video bus and hey now it looks great. The effect has been to turn all the cuts into very short dissolves which is much more pleasant to the eye and also got rid of a wierd interlace / color strobing problem that I just couldn't figure out.
The color strobing problem is interesting. These are stills and this one has part of a roof with patterned tiles that are almost horizontal. Before it was slowed down they are 100 % stable. After slo mo the color flickers when I go through it frame by frame. It would seem that alternat colors have ended upon alternate lines i.e. in alternate fields and VV is not de-interlacing before generating the new frames needed by the slo mo.
I could probably get around this by rendering it 25p first and then doing the slo mo except that would screw up the parts that do have motion. Seing as how the motion blur fixed the problem I think I'll leave well enough alone.