Originally posted by Ryu77:

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Just wanted to make a post about a recent achievement that may help somebody...

As this thread clearly shows I have been converting Matroska (mkv) files to be compatible with the PS3. I decided recently that I would like to make a regular DVD version of these movies too.

This presented me a big hurdle! Since I live in Australia, the video standard is PAL here. So, as all Blu-ray sourced Matroska encodes are at 23.976 progressive. I needed to speed up the video slightly to keep it progressive and keep it all running smooth. This is also the method the professional production studios use when producing PAL DVD discs. You will notice that the PAL versions of the same movie are usually a few minutes shorter in length (about 5 minutes for a 2 hour movie). Some video encoding applications convert NTSC to PAL by simply inserting duplicate frames. While this works it makes the video not run as smooth as it should be. I could manage to do the video part correctly quite easy but the audio had me stumped for quite some time. I needed to speed up the audio while keeping all the dynamics intact at the same time. I tried quite a few applications and methods but after many failed attempts I finally found an answer...

I used AVIsynth with the following script:

loadplugin("D:\AVI synth plugins\NicAudio.dll")
Video=DirectShowSource("D:\Video.mkv")
Audio=NicDTSSource("D:\DTS Audio.dts")
audiodub(video,audio)
AssumeFPS(25,sync_audio=true)
SSRC(48000,false)
AddBorders(0,132,0,132)
LanczosResize(720,576)

I then used MeGUI to convert my 1hr55min (23.976fps) DTS track to a 1hr50min (25fps) Dolby AC3 track.

This method can also work for PAL-->NTSC conversion. Just change the number in AssumeFPS from 25 to 23.976 and resize to 720 x 480 instead of 720 x 576.

Note: The mkv video file loaded in the AVIsynth script is a repacked Matroska file with only a video stream.

I hope this can help somebody if they get stuck doing something similar. :-D

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Originally posted by frogno1:

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I think convert to NTSC is better.

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Originally posted by davexnet:

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I think you're right re: converting HD 1080 to PAL, particularly
since you're in PAL land.

I'm in the USA, but I've got a DVD player updated with firmware from
the UK, so I now have divx/xvid and Pal conversion within the player
to NTSC output, which works *very* well.

Regarding converting from the 23.976 > 25, how did you do it?
Did the software add frames, or did you speed it up and feed it in at 25fps?

PS Regarding your Pal/Ntsc TV, Very, very unusual here, it wold be an
expensive spcialty item. One good thing, with the advent of HD,
it makes the whole subject somewhat moot.. Thanks goodness.

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Originally posted by Ryu77:

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So, as all Blu-ray sourced Matroska encodes are at 23.976 progressive. I needed to speed up the video slightly to keep it progressive and keep it all running smooth. This is also the method the professional production studios use when producing PAL DVD discs. You will notice that the PAL versions of the same movie are usually a few minutes shorter in length (about 5 minutes for a 2 hour movie). Some video encoding applications convert NTSC to PAL by simply inserting duplicate frames. While this works it makes the video not run as smooth as it should be.

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Originally posted by Ryu77:

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I used AVIsynth with the following script:

loadplugin("D:\AVI synth plugins\NicAudio.dll")
Video=DirectShowSource("D:\Video.mkv")
Audio=NicDTSSource("D:\DTS Audio.dts")
audiodub(video,audio)
AssumeFPS(25,sync_audio=true)
SSRC(48000,false)
AddBorders(0,132,0,132)
LanczosResize(720,576)

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