PAL to NTSC avi files

[reptilia82]

I have pal television programes that annoy me (media info above).
I can't live with the 4% increase in speed and pitch any longer
I have scrambled online and only seem to find solutions for mac owners. its really bugging me.
There's a number of methods of converting PAL to NTSC. The ''Slow PAL'' method seems to be the best one as it will slow the audio pitch and speed BACK to human levels.

Does anyone know of what software is BEST for this conversion? for a PC? NOT a mac?

thanks alot for reading and i hope someone can help.
cheers,
dave

[titigrom]

Another method is to recompress the video stream with VirtualDub and let the audio untouched.

First you extract the audio stream in Direct Stream Copy.
Then go to the Video Menu, "Frame Rate" option and "Frame rate conversion". If you wish NTSC, then choose input "29.97fps" or film "23.97".
Maybe you have to change aspect ratio for NTSC image frame (Filter-> Resize), etc. Save the Video Stream with the wanted codec in Full Stream Processing Mode.

Close the file and mux the two streams (audio and new video) in "Direct Stream Copy" Mode.

There 's not a good way because you alter the quality at each step. You will find some choppy-jerky issue.

Oh sorry ! you want to slow down the audio (affecting pitch), VirtualDub has some useful audio filters. Change the audio first and note the new duration of the movie with a soft either like Audacity !
Go to the video "Frame rate" and try the "Frame Rate Adjustment"

[jagabo]

For AVI files try VirtualDub:

1) File -> Open Video File
2) Video -> Direct Stream Copy
3) Video -> Frame rate... Source Rate Adjustment... Change Frame Rate to [23.976]
4) Audio -> Full Processing Mode
5) Audio -> Use Advanced Filtering
6) Audio -> Filters... Add... Input, Stretch, Output, set stretch to 1.04271 (25/23.976)
7) Audio -> Compression... select codec and paramters
8) File -> Save as AVI

It will only take a few minutes. The video will not be reencoded, it will just play back slower. The audio will be resampled and reencoded.

[mail2tom]

I was going to make a suggestion, but jagabo has already done it. That's the same method I use.

[reptilia82]

thanks everyone. ill give it a go. ive had virtual dub for years as well

cheers

[reptilia82]

....select codec and parimeters....which do you recomend i choose? im not too sure.

[Baldrick]

You can choose same as your source mp3 with 128kbits. Install lame mp3 acm if you can't choose any mp3.

Or use uncompressed pcm/wav if you don't care about the output file size and only going to play on your computer.

[dphirschler]

If you want to just watch it, VLC will slow it down for you if you choose "Playback | Slower".

Darryl

[jagabo]

I don't think VLC will lower the pitch of the audio though. KMPlayer gives the option of keeping the pitch or changing it. I don't know if it has the fine control to go from 25 fps to exactly 23.976 fps.

[Gavino]

I don't think VLC will lower the pitch of the audio though.

It doesn't - it maintains the pitch, which is really neat for slowing down that difficult-to-play guitar solo.
However, no good for reptilia82's purposes.

[dphirschler]

Funny. I could swear that it does lower the pitch.


Darryl

[titigrom]

It does ! VLC can lower the pitch when you playback slower (or faster) like KMPlayer but this option is by default set to keep the pitch unchanged. Go to the advanced setting for Audio... The only problem is that the playback speed can only be changed step by step like 1,5 times or 2 times lower or faster.

Reptilia82 : you can use another soft called ReClock to playback your movies without doing anything else. It is a Directshow filter that can help you. Just test the different settings

[jagabo]

It does ! VLC can lower the pitch when you playback slower (or faster) like KMPlayer but this option is by default set to keep the pitch unchanged. Go to the advanced setting for Audio...

I thought it might have the ability but didn't see an obvious setting. But I found it: Tools -> Preferences -> (Show Settings -> All) -> Audio -> Enable Time Stretching Audio. With the option enabled it maintains pitch, disabled it changes pitch. You may have to exit the program and restart it for the setting to take effect.