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Sujet : Comment capturer Plus de 71 Min |
| gilou2 |
Il me semble que VirtualDub arrive à contourner ce problème de driver mais pas FreeVCR (pas encore ;) ).
Voilà ce que dit Avery Lee à ce sujet :
Why does my capture stop at 1 hour, 11 minutes?
This is a bug in many video capture drivers. The exact limit is actually 232 microseconds, or 1 hour, 11 minutes, 34 seconds. Many TV tuner devices are susceptable to this bug, as are the miro/Pinnacle DCxx devices; you may be able to fix the problem simply by upgrading to the latest capture drivers. There are two incarnations of this problem. In the non-fatal version, video frames are still sent to the application, but the timestamp on the video stream starts over from zero. VirtualDub will correct for this problem automatically, allowing you to capture beyond 71 minutes. The other possibility is that the driver stops sending data altogether. VirtualDub will notify you if this occurs, but will not be able to capture past 71 minutes in this case.
Vanilla capture devices based on the Conexant/Brooktree BT848/878 reference drivers are usually either immune to the problem or have the non-fatal form of it. I'm told that the bug in Pinnacle's DC30(+) drivers still exists but is nonfatal as of the 1.41a drivers. As of this writing, the bug in the DC10/10+/20/20+ drivers is fatal and cannot be worked around.
There are apparently a few drivers that are even susceptable to half this limit (35 min.) due to using signed 32-bit arithmetic. |
