HDTV 59.940 fps -> 23.976 fps?

[apk]

Hello,

I have a HDTV file that is 59.940 fps and would like to take this down to 23.976 fps. The source is 720p from CTV. So far i have not had any luck. Some programs dont like the .mpg at all and say its 3 seconds when actually it is 38 seconds etc etc.

I had a little luck with one method using VDubMod but it skipped alot of frams but keps the timing.

I have searched through the forums here and at Videohelp and taken as much information as possible but still had no luck. Most programs throw alot of frames away :(

Any help is this will be very much appreciated :)

[Pookie]

Is it:

CTV = Canadian TV ?

Transport Stream or "Generic" MPEG2 ?

Is the source a movie or a TV show like Letterman, Leno, etc ?

[apk]

yeah, its CTV the source, but for other sources in the US for example there is still the same problem.

The source is a show like Lost or ER, with shows like Letterman etc then 29.976 fps is good, but not for others.

[neuron2]

Maybe the stream has frame repeats. Can you try the latest DGIndex beta 1.4.9 beta 13?

Also, can you post an unprocessed sample clip?

[tyronepiggomz]

This is the way i do it for 720p source:

1. Use MPEG Streamclip to convert .TS to .MPG PS
2. Use Mpeg2Cut2 to cut comeercials.
3. Run cut .MPG through DGIndex, demuxing audio.
4. Make .avs with SelectEven() and Decimate() to pull framerate to 23.976.
5. 2 pass XViD encode in VDubMod
6. Mux video and audio in nandub.
7. Enjoy

I've been using that method for a while and havent had one single problem. Ifim confusing PM ME

[dssgorila]

This is the way i do it for 720p source:

1. Use MPEG Streamclip to convert .TS to .MPG PS
2. Use Mpeg2Cut2 to cut comeercials.
3. Run cut .MPG through DGIndex, demuxing audio.
4. Make .avs with SelectEven() and Decimate() to pull framerate to 23.976.
5. 2 pass XViD encode in VDubMod
6. Mux video and audio in nandub.
7. Enjoy

I've been using that method for a while and havent had one single problem. Ifim confusing PM ME

Can you post an sample of your avs?

[tyronepiggomz]

LoadPlugin("DGDecode.dll")
LoadPlugin("UnDot.dll")

mpeg2source("sample.d2v")

BicubicResize(624,352)

Undot()
SelectEven()
Decimate()


Its not a great avs but it gets the job done. I have a sample of last night's 24 that i captured. PM ME for that if you want.

[phædrus]

LoadPlugin("DGDecode.dll")
LoadPlugin("UnDot.dll")

mpeg2source("sample.d2v")

BicubicResize(624,352)

Undot()
SelectEven()
Decimate()


Its not a great avs but it gets the job done. I have a sample of last night's 24 that i captured. PM ME for that if you want.

Just wondering... I'm new to HDTV capturing (did my first capture on Monday night... 24 as it happens) and wondering about your aspect ratio here. In backing up DVD, I always used 640x352. With HDTV is 624x352 a more accurate aspect ratio? I mean, is the HDTV frame supposed to be a little less wide than a DVD frame? Or is my DVD backup ratio of 640x352 a little too wide? I usually watch all my video on a computer monitor, and when playing a DVD, the software DVD players seem to display a 16x9 frame as actually about 1.81 or 1.82 to 1. I measured. That's why I chose 640x352 for backups. Should I change my method for HDTV, or am I being anal retentive?

[tyronepiggomz]

Not really. The DVDRips of hours 1 through 4 are 640x352. I use 624x352 just out of preference because i like to stay true to the aspect ratio. Most HDTV Shows (24, House, Grey's Anatomy) are filmed in 1.78:1. If you wanted a 640 width but wanted to stay with the 1.78:1 AR then use 640x360. I hope im making sense...i cant explain things usually.

-tyrone

[LockoNH]

yeah, its CTV the source, but for other sources in the US for example there is still the same problem.

The source is a show like Lost or ER, with shows like Letterman etc then 29.976 fps is good, but not for others.

I record 'Lost' as well, I found it tough to get it perfect because of their weird 3:2 repeating scheme (somewhat random at times), gave output that would briefly jump or stutter at times.

What I found to work was to do everything that everyone else is saying as far as converting to MPEG-2, run it through DGindex.

I use an avisynth script:

LoadPlugin("your path to plugins\DGDecode.DLL")
LoadPlugin("your path to plugins\FDecimate.dll")
MPEG2Source("yourpath\yourfile.d2v")
ConvertToYV12()
FDecimate(rate=23.976,threshold=3)

[azazel1103]

i have a 59.940 720p source. i have decimated to a more apropiate 23.976 framerate but when i mux the audio and video back the sound it's out of sync. what's to be done to correct this?

[Comatose]

Wait, what... is there no interlacing over there? o_o How come none of you tried to deinterlace/IVTC?

[Toti]

I have been using this with 720p capture from over the air and it works great!!

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\DGDecode.dll")

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\Decomb521.dll")

mpeg2source("C:\Transporter 2\Main Movie\MainMovie.d2v", upConv=1)

Telecide(1,guide=1,vthresh=0)

Decimate(cycle=2)
Decimate(cycle=5)

FieldDeinterlace(Full=False,threshold=15,dthreshold=9)

[bmnot]

Is it possible to do this conversion without reencoding?