Hello Michael,
Michael Riepe wrote: > Francesco Fumanti wrote: > >> Would it be possible to add the possibility to check the opened >> stream for data breaks? > > You mean, missing frames? I don't know exactly what kind of errors could be relevant. > We do that for video frames when the file is indexed. If you start > dvbcut on the command line, you will see the messages about missing > frames. Thanks for telling me this. Consequently, I will now start dvbcut from the command line. However, would it be possible to make that information available in a pane in the application, so that it is also available when dvbcut is started from the menu? > This function is not very precise, though. You sometimes get false > alarms when the input file contains wrong timestamps, for example. The few files that I tried since I know about starting dvbcut from the command line, did not return any error. You say that sometimes it gives false alarms. What about the other way round: does it sometimes miss real errors? >> Moreover, it would be great if this check could be enhanced with >> the option to fix the data break when possible. > > Maybe we could. But many players handle missing frames quite well > (usually by speeding up and slowing down the surrounding frames a > little). All we could do in dvbcut is fill the gap with black frames > (or some milliseconds of silence in case of audio), or maybe repeat > the preceding frame in some cases. The result would probably be > worse. Based on your explanation, it might probably be the best to leave the errors in the file and let the player handle them. This way, we can also benefit from the future improvements made to the error handling code. In any case, if you are adding some error fixing code to dvbcut, I would appreciate if it was optional so that the user can always turn it off. >> (MPEG Streamclip >> http://www.squared5.com/svideo/mpeg-streamclip-win.html offers that >> feature.) > > I wonder how they do it, and what the result looks/sounds like. There > aren't exactly many ways to recover missing audio/video data... I don't know either. On the mailing list I read that the difference between the export of a file in a format containing DVD in the format name, and the same without DVD, is that the first has a sectorsize optimised for DVD. Could you please tell me why dvbcut also offers an export based on libavformat? Does libavformat also ship with dvbcut, or is it in a separate package of the dvbcut application? This brings me to another possible RFE: Could you please add to the export methods of dvbcut the possibility to export the file in the same format it was opened? For example, let's assume that I open a movie.ts file in dvbcut and cut commercial out of it. Would it make sense to copy the portion that have not been touched simply into the exported file without modifications; I don't know if something has to be done at the points comming together after cutting the commercial out of it!? In fact, as far as I know: the less a file is transformed, the less quality gets lost. Or does the transformtions done by dvbcut not touch the unedited pictures and audio, so that they stay the same as in the original file? Cheers Francesco ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ DVBCUT-devel mailing list DVBCUT-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dvbcut-devel
