Re: [gentoo-user] Video editing advice on formats and size of file

[Michael Mol <mikemol@gmail.com>]

On Sat, Dec 24, 2011 at 5:36 AM, Dale <rdalek1967@gmail.com> wrote:
> Dale wrote:
>>
>>
>> I been doing some testing on this.  I went to about the end of a 3 hour
>> video.  By the time it gets near the end of the video, the sound is almost
>> 1.4 seconds off.  I tested this by telling smplayer to adjust the audio
>> delay.  It is a bit annoying to see something on screen then hear it a
>> second or so later.  It's like seeing a explosion at a distance.  You see it
>> then have to wait for the sound wave to hit you.  When I am midways of the
>> video, it is about .6 to .7 seconds off.  So, it gets farther off as it
>> goes.  It's most likely one step off that just gets worse as it goes.
>>
>> I tried a couple other commands but I get errors about the file type.  I
>> think a couple movies are in flv1 which is old.  I may have to convert them
>> then stitch them together, which may not do the sound any good then either.
>> lol
>>
>> Well, I got something to play with.
>>
>> Dale
>>
>> :-)  :-)
>>
>
> Well, I tried to go to sleep and come back to this tomorrow.  I couldn't
> sleep so here I am again.  While laying there I came up with a idea.  I
> stitched the first two videos together into a temporary file.  Then I
> stitched the temporary file to the 3rd video.  The sound is off but it sort
> of resets when it reached the stitch point so it is a good bit closer than
> it was.
>
> If I ever get me a video camera, I'm going to know to not break up videos if
> I ever plan to put them back together again.  It appears that when you break
> the video, it is like humpty dumpty.  You just can't quite get it back
> together again.
>
> At least this way is faster tho.  Thanks to all for the ideas.  I'm still
> testing things.

There are ways to fix the sync, I just don't know what they are. Don't
give up hope. :)

Though...hm. One thing you might try is keeping the 'video' streams in
'copy' mode, but transcode the audio streams to something like 256kb/s
MP3. It'll increase your file size slightly, but the tools may be
clever enough to maintain sync better that way.


-- 
:wq