Doom9's Forum - View Single Post - Chapter Grabber extract chapters from DVD, BD, HDDVD and add chapter names

meRobs · 30th October 2013, 10:10

I have just tried the workaround.
I loaded the VTS_01_0.IFO, which gave the 20th chapter for the 29.97 fps NTSC file as 31:27.741.
I clicked Edit > Current FPS & selected 30.00
Then, Edit > Convert Chapter Times by FPS & selected 29.970
This immediately changed the 20th chapter to 31:29:18.

This is correct since the value set in Premiere was 31:29:18 exactly. When muxed into the MP4 to give an MKV in MKVmerge, the result played perfectly in VLC!
The chapter jumps occurred exactly at the scene changes!

This is not surprising since 30.00 is exactly 0.1% greater that 29.97, which is equivalent to 3.6 sec in every hour.
Or ~2 sec in my 32 min clip -- a very noticeable error when a chapter jump arrives before a known scene change.

This relatively small error may easily go unnoticed in most cases unless the user is aware that the chapters should occur at particular spots such as at scene changes.

30th October 2013, 10:10	#161 \| Link
meRobs Registered User Join Date: Dec 2007 Location: Sydney, Australia Posts: 118	I have just tried the workaround. I loaded the VTS_01_0.IFO, which gave the 20th chapter for the 29.97 fps NTSC file as 31:27.741. I clicked Edit > Current FPS & selected 30.00 Then, Edit > Convert Chapter Times by FPS & selected 29.970 This immediately changed the 20th chapter to 31:29:18. This is correct since the value set in Premiere was 31:29:18 exactly. When muxed into the MP4 to give an MKV in MKVmerge, the result played perfectly in VLC! The chapter jumps occurred exactly at the scene changes! This is not surprising since 30.00 is exactly 0.1% greater that 29.97, which is equivalent to 3.6 sec in every hour. Or ~2 sec in my 32 min clip -- a very noticeable error when a chapter jump arrives before a known scene change. This relatively small error may easily go unnoticed in most cases unless the user is aware that the chapters should occur at particular spots such as at scene changes. Last edited by meRobs; 30th October 2013 at 10:25.