[MEncoder-users] Encoding using EDL

Maurice Cooper pyntur at gmail.com
Mon Apr 25 01:38:12 CEST 2005

On 4/25/05, Scott W. Larson <scowl at pacifier.com> wrote:
> I've been using a version of the EDL code from a month or two ago and
> found it works very well. The problem I was having with A/V sync was
> that the edits seemed to be screwing up a filter, but actually I wasn't
> using the filter correctly in the first place.
> An edit will often break an audio packet and the broken packet will
> probably print an error. Since my edits have been during quiet sections
> I haven't heard it cause any noise or any noticeable effects.
> There is a problem when you attempt to edit out a section in which the
> pts's have wrapped around back to zero. The skipping code will get
> confused because the end of the skipped section will have a pts lower
> than the beginning. The one time this happened to me, I had to make a
> new version of the unedited original so its pts would start at zero and
> redo the edits. This won't be a common situation though.

I'm editing out three sections from 30 minute MPEG-4 files encoded
using mencoder - removing ad breaks. By the end of the video, just
before the last edit, the audio is approximately half a second out.

Could it be because the files are encoded using vqscale=1?

- Mart

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