Forum Archive Home -> Video Conversion -> Autodesk Wiretap Central (ffmpeg based) 4:1 issue
Autodesk Wiretap Central (ffmpeg based) 4:1 issue |
| Motawm posted 2009 Oct 26 06:12 |
| So we use the autodesk product Wiretap Central to do encodings from out flame suites. It's essentially just a front end for FFMPEG and allows you to create custom profiles via editing an XML file and sending through your own syntax.
I'm having an issue creating an NTSC mpeg2. I see there have been a few discussions about 3:2 pulldown and ffmpeg not supporting it (yet) but they are all pretty old posts. Does anyone know if it supports it now? I couldn't find anything in their documentation about it. Basically, the source material is 23.98 and I'm using the "dvd-ntsc" output for ffmpeg which seems to give me a 29.976 clip but it's not adding correct 2:3. The cadence is 4:1 which means it's very, very stuttery. I've tried straight burning a 23.98 file and letting the DVD player add the pulldown but it seems I end up with the same problem. From my understanding you can add a 'soft' 2:3 switch in 3rd party applications which then tells the decoder to add the 2:3. Ideally, I'd like to get this done in ffmpeg though as it saves re-transcoding the files. (Wiretap Central is the only way you can talk to the flames StoneFS filesystem) Any suggestions? |
| guns1inger posted 2009 Oct 26 06:17 |
| Encode to 23.967 fps with ffmpeg, then use DGPulldown to add the correct pulldown flags to the video stream prior to authoring. |
| Motawm posted 2009 Oct 26 06:22 |
| Perfect, that looks like it just adds the flags and doesn't bother with a re-encode.
Thanks! |
Login/Register to our forum to be able to post here.