hoozdapimp
Jul 2002
Punk B1tch
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Easy PAL -> NTSC conversion...solution inside
I know I've seen many threads on here asking how to convert from PAL to NTSC...I recently came across a very easy solution.
A typical workflow is as follows (assumes you are starting with PAL source material):
- Demux the video and audio streams.
- If the video is interlaced, deinterlace it to make it progressive. If it is already progressive, skip this step.
- Resize the video to 720x480.
- Encode the video to MPEG2 at 25fps progressive.
- Run DGPulldown on the video MPEG2 stream to flag it up to 29.97fps (using the 25fps --> 29.97fps conversion).
- Mux the audio and video into a program stream, or author a DVD using the audio and video streams.
Here is how I currently do this:
1) Run mpg/vob sete through DGIndex (this process usually takes about 1-2 minutes).
To do this open the file(s) with DGIndex and press F4, and choose the file to save it to. This will create a d2v file which you will use in step 2, and the demuxed audio file, which you will use in step 4).
2) Using whatever encoder you want to, re-encode the video size to 720x480 (note, make sure you do not change the frame rate). When using CCE or TMPGEnc, you can use the simple avisynth script such as:
quote:
LoadPlugin("C:\Program Files\Avisynth 2.5\Plugins\DGDecode.dll")
MPEG2Source("C:\Path\to\myFile.d2v")
LanczosResize(720,480)
Note: Make sure you replace the paths to correctly indicate where on your system your DGDecode.dll file is, and where you saved your d2v file to in step 1.
3) Once the video has been encoded, run the resized video file through DGPulldown and for the check the 25->29.97 box. DGPulldown can be downloaded here
4) Reauthor with original audio (which is extracted in step 1 using DGIndex), and the new video.
The advantages to this are:
- The video frame rate does not have to change. This is the hardest part for these types of conversions, because it is what results in the video playing back jerky, or having a ghost effect.
- The audio no longer has to be re-encoded to 29.97 or 23.97 fps, thus elminating any synch issues.
Enjoy!
Last edited by hoozdapimp on 03-13-2007 at 02:10 AM
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