On Thu, Oct 30, 2014 at 7:22 AM, Jonas Smedegaard <d...@jones.dk> wrote:
> Hi Zenny, > > [relying only to list] > > Quoting Zenny (2014-10-30 13:24:16) > > The audio and video does not sync after rendering though both have > > same lengths. It syncs very well in the kdenlive project monitor. > > Seems from prior threads on this list that MLT author consider this not > so much a bug as a known limitation of transcoding source on-the-fly. > > I assume you are talking about me, but that is incorrect. Yes, there are some problematic formats such as VBR MP3 and MPEG-2 with B-frames in Transport Stream, but I do not generally say that you must first transcode sources to some non-temporally compressed material. In fact, I rarely do so and prefer that not to have to do that. However, I am not opposed to saying it may be needed with some inputs. > Try first transcode to (semi-)raw format like some flavor of DV and see > if sync problems persist. > > But DV is SD only. Other, more flexible intermediate formats to consider are in presets/consumer/avformat/lossless. It definitely helps with troubleshooting and creating a bug report to see if the problem goes away with a (near) lossless inputs. > > - Jonas > > -- > * Jonas Smedegaard - idealist & Internet-arkitekt > * Tlf.: +45 40843136 Website: http://dr.jones.dk/ > > [x] quote me freely [ ] ask before reusing [ ] keep private > >
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