MP4 question about chapter list to txt

[andy95]

Hello. My question is very simple but sorry I found not a answer...
How I can extract and import chapter from a mp4 file with exiftool?

If I make: exiftool.exe test.mp4
I see "Chapter List" but how can I extract this simple tag to a txt file and than modified back to the mp4?

Example:
with ffmpeg: ffmpeg.exe" -i "test.mp4" -f ffmetadata "test.txt"
with mp4box: mp4box.exe "test.mp4" -dump-chap-ogg
with drax: drax.exe" /export:"test.txt" /file:"test.mp4"

I have tested ffmpeg, mp4box and drax but all tools are OK for extract but not for the import.
Drax and mp4box crash, ffmpeg metadata too complex for post-processing.

I hope soo that ExifTool can help me.
Thanks and Regards.

[StarGeek]

I don't have any files that have a ChapterList to test for extraction, but if you check on the Quicktime tags page, you'll see that exiftool cannot write ChapterList.

[andy95]

It is very strange. Chapter List is displayed by "ExifTool"...
Many of my mp4 files have this option (Encoding with ShanaEncoder).

[StarGeek]

I didn't deny that the ChapterList tag doesn't exist.  It's just I have no samples that include it so I can't help on the extraction side. 

[andy95]

Thank's StarGeek for your Info and help.

I have make a example file (see attachment).
Please can you test it?

I could find out if I have a .mkv file with chapter and copy the stream from mkv to mp4 with Shanaencoder
than I have the chapter list (Chapterlist) Option into the mp4 file.

[StarGeek]

Ok, so I see this value in that file

Code Select Expand

[0:00:00.000] 1 | Chapter*[0:01:00.000] 2 | Chapter*[0:02:00.000] 3 | Chapter*[0:03:00.000] 4 | Chapter*[0:04:00.000] 5 | Chapter

What is it you want to do with it?  As I said, exiftool can't edit this info.

When you mentioned mkv, I realized I had some dvds ripped to mkv and they have chapter info, but in a completely different format. In those, it shows as

Code Select Expand

---- Chapter1 ----
ChapterTimeStart                : 0 s
ChapterTimeEnd                  : 0:02:01
ChapterString                   : Chapter 01
ChapterLanguage                 : eng
---- Chapter2 ----
ChapterTimeStart                : 0:02:01
ChapterTimeEnd                  : 0:04:06
ChapterString                   : Chapter 02
ChapterLanguage                 : eng
---- Chapter3 ----
ChapterTimeStart                : 0:04:06
ChapterTimeEnd                  : 0:06:11
ChapterString                   : Chapter 03
ChapterLanguage                 : eng

But exiftool has no ability to edit mkv files.

[andy95]

Thanks again StarGeek

Ok, so I see this value in that file

Code Select Expand

[0:00:00.000] 1 | Chapter*[0:01:00.000] 2 | Chapter*[0:02:00.000] 3 | Chapter*[0:03:00.000] 4 | Chapter*[0:04:00.000] 5 | Chapter

What is it you want to do with it? 

I will extract the chapter list to txt and rename to (example):

Code Select Expand

[0:00:00.000] 1 | New Title *[0:01:00.000] 2 | Again*[0:02:00.000] 3 | xxxx*[0:03:00.000] 4 | OK*[0:04:00.000] 5 | test

The file is not a mkv! - It's a mp4 file.

OK. I make it with drax:
drax.exe /export:"test.txt" /file:"xy.mp4"
The txt content can I manuell rename.

Than with mp4box back to mp4 file:
mp4box.exe -chap "test.txt" "xy.mp4"

I had hoped that exiftool can extract and import the chapter it (only mp4 files).

[StarGeek]

I will extract the chapter list to txt and rename to (example):

Code Select Expand

[0:00:00.000] 1 | New Title *[0:01:00.000] 2 | Again*[0:02:00.000] 3 | xxxx*[0:03:00.000] 4 | OK*[0:04:00.000] 5 | test

You could use this command.  It will make a text file with the contents of the ChapterList tag for every file it processes.
exiftool -ChapterList -s3 -w txt /path/to/files/

The file is not a mkv! - It's a mp4 file.

You brought up mkv files.  I was only commenting on what you said.

I had hoped that exiftool can extract and import the chapter it (only mp4 files).

As I said, exiftool cannot write this data.