|
|
| tuaris |
 Posted: Oct 27 2011, 12:56 AM |
 |
|
Newbie
Group: Members
Posts: 3
Member No.: 33459
Joined: 27-October 11
|
Running the latest version of virtual dub 1.9.11.
I am attempting to manually cut some large videos (captured from video tape) into multiple individual parts and save them as separate files titled according to it's content. Both video and audio are in DIRECT STREAM COPY mode.
The problem I run into is that when I specify the selection start and end, the output video does not start where I selected it. It's always about 6.5 seconds more than I want at the start. I've confirmed this on multiple computers and with multiple videos. |
|
| Placio74 |
| Posted: Oct 27 2011, 04:39 AM |
|
|
VideoAudio
Group: Members
Posts: 1216
Member No.: 21485
Joined: 24-May 07
|
Start selection is on a keyframe?
What video format (DV, MJPEG, ...)?
--------------------
VideoAudio.pl - Serwis o technologii wideo & audio |
|
| mayhem |
| Posted: Oct 28 2011, 06:39 AM |
|
|
Advanced Member
Group: Members
Posts: 62
Member No.: 24668
Joined: 13-December 08
|
I've seen this too, I believe its normal behaviour for direct stream.
It will go back to the previous keyframe (maybe forward if nearer? not sure),
but I've definately seen it go back multiple times and that can be anywhere
from a fraction of a second to several seconds depending on how far apart your
keyframes are in whatever format video it is.
In most .avi type videos its usually not an issue due to fairly
tight keyframes at least as far as I've noticed. In other formats
it may be a large enough issue to warrant full process mode, however.
|
|
| tuaris |
| Posted: Oct 30 2011, 03:32 AM |
|
|
Newbie
Group: Members
Posts: 3
Member No.: 33459
Joined: 27-October 11
|
Okay, I understand now why it happens. I guess the correct way is to always use full processing mode. But won't that create a lower quality copy? |
|
| ale5000 |
| Posted: Oct 30 2011, 11:59 AM |
|
|
Advanced Member
Group: Members
Posts: 1114
Member No.: 22180
Joined: 30-September 07
|
Use the "Smart rendering".
--------------------
New VirtualDub forum
VirtualDub AIO (All-in-One installer for VirtualDub and plugins)
Codec Toolbox RS (A tool to read/change merit of codecs and many other things)
Input plugins for VirtualDub / ACM codecs / VFW codecs |
|
