Getting the clips from a DVD or Blu-ray?
- mirkosp
- The Absolute Mudman
- Joined: Mon Apr 24, 2006 6:24 am
- Status: (」・ワ・)」(⊃・ワ・)⊃
- Location: Gallarate (VA), Italy
- Contact:
- l33tmeatwad
- Joined: Wed Feb 16, 2005 3:22 pm
- Location: Christiansburg, VA
- Contact:
Re: Getting the clips from a DVD or Blu-ray?
Details please, there does not seem to be adequate documentation that I can find on this.mirkosp wrote:...even when L-Smash Works is out there, free for all, and better?
Last edited by l33tmeatwad on Thu Jun 20, 2013 3:29 pm, edited 1 time in total.
Software & Guides: AMVpack | AMV 101 | AviSynth 101 | VapourSynth 101
PixelBlended Studios: Website | Twitter | YouTube
PixelBlended Studios: Website | Twitter | YouTube
- mirkosp
- The Absolute Mudman
- Joined: Mon Apr 24, 2006 6:24 am
- Status: (」・ワ・)」(⊃・ワ・)⊃
- Location: Gallarate (VA), Italy
- Contact:
Re: Getting the clips from a DVD or Blu-ray?
I already linked it before:
mirkosp wrote:Also, I will have to say that FFMS2 is a bad idea for direct BD AVC (and not just that), and remuxing isn't a solution to fix the problem, since it's not related to the container, hence why I suggest L-Smash Works now; here's a more indepth explanation (keep in mind that ffms2 relies directly on libav). For progressive content, L-Smash Works is a safe option, for interlaced content, only DGDecNV is truly safe.
L-Smash Works has its own internal workarounds to make this all work correctly, whereas ffms2 depends entirely on libav, which doesn't handle this properly. As this is a common occurrance in AVC BDs (yes, progressive ones as well), it makes L-Smash Works the preferrable suggestion now that it exists, if a free solution is desired.For instance, H.264 allows IDR-picture without SPS/PPS.
For such IDR-pictures in TS, we can't treat as keyframe (random access point) but libavfomrat returns them as keyframe.
So, the result will be broken when the current SPS/PPS in extradata doesn't match (and libavcodec shall not update AVCodecContext.extradata).
This case is frequently present in BD m2ts.
LWLibavVideoSource can handle correctly this case.
- l33tmeatwad
- Joined: Wed Feb 16, 2005 3:22 pm
- Location: Christiansburg, VA
- Contact:
Re: Getting the clips from a DVD or Blu-ray?
I seemed to have overlooked the link in your first post. Well this is rather new and I have not heard of it before, thank you for the links and information. Also, this would have been nice information to quote the first time around rather than a side note and a link the first post, helps it to not get overlooked as easily !mirkosp wrote:I already linked it before:
mirkosp wrote:Also, I will have to say that FFMS2 is a bad idea for direct BD AVC (and not just that), and remuxing isn't a solution to fix the problem, since it's not related to the container, hence why I suggest L-Smash Works now; here's a more indepth explanation (keep in mind that ffms2 relies directly on libav). For progressive content, L-Smash Works is a safe option, for interlaced content, only DGDecNV is truly safe.L-Smash Works has its own internal workarounds to make this all work correctly, whereas ffms2 depends entirely on libav, which doesn't handle this properly. As this is a common occurrance in AVC BDs (yes, progressive ones as well), it makes L-Smash Works the preferrable suggestion now that it exists, if a free solution is desired.For instance, H.264 allows IDR-picture without SPS/PPS.
For such IDR-pictures in TS, we can't treat as keyframe (random access point) but libavfomrat returns them as keyframe.
So, the result will be broken when the current SPS/PPS in extradata doesn't match (and libavcodec shall not update AVCodecContext.extradata).
This case is frequently present in BD m2ts.
LWLibavVideoSource can handle correctly this case.
Might I recommend a sticky with this kind of information? Things like this sometimes slide in under the radar and it would be useful to have a listing of alternative methods of handling this type of footage since the org guide lacks this kind of information at the current moment. I personally haven't researched anything new in the past 6 months, thus easily missed certain things that came out in that time frame. I personally am glad there is a more accurate alternative that isn't reliant on a graphics card chipset since my current machine has an ATI card, thus making DGDecNV quite useless.
Additionally, could we get the stickies cleaned up a bit? Half of them are so outdated it's not even funny, this forum looks like a graveyard of information...I understand the org guide is being updated, but having some basic software information and advice on new methods of handling certain types of media would be extremely useful and probably handle a good chunk of the questions that come through the forum.
Software & Guides: AMVpack | AMV 101 | AviSynth 101 | VapourSynth 101
PixelBlended Studios: Website | Twitter | YouTube
PixelBlended Studios: Website | Twitter | YouTube