[FFmpeg-user] Extract images from concatenate .VOB

2015-09-11 Thread Etienne Desautels
Hi, I'm trying to extract images (frames) from some DVD. For this I think I need to concatenate multiple .VOB (like VTS_01_1.VOB, VTS_01_2.VOB) to be able to extract images that are in the second, third, etc. VOB. Unfortunately it looks it doesn't work when I put the seek (-ss) before the inpu

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-12 Thread Nicolas George
Le quintidi 25 fructidor, an CCXXIII, Etienne Desautels a écrit : > I'm trying to extract images (frames) from some DVD. For this I think I > need to concatenate multiple .VOB (like VTS_01_1.VOB, VTS_01_2.VOB) to be > able to extract images that are in the second, third, etc. VOB. This is a common

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread Etienne Desautels
On 2015-09-12, at 05:45, Nicolas George wrote: > Le quintidi 25 fructidor, an CCXXIII, Etienne Desautels a écrit : >> I'm trying to extract images (frames) from some DVD. For this I think I >> need to concatenate multiple .VOB (like VTS_01_1.VOB, VTS_01_2.VOB) to be >> able to extract images that

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread Etienne Desautels
On 2015-09-12, at 05:45, Nicolas George wrote: > Le quintidi 25 fructidor, an CCXXIII, Etienne Desautels a écrit : >> I'm trying to extract images (frames) from some DVD. For this I think I >> need to concatenate multiple .VOB (like VTS_01_1.VOB, VTS_01_2.VOB) to be >> able to extract images that

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread Nicolas George
L'octidi 28 fructidor, an CCXXIII, Etienne Desautels a écrit : > I just found the '-safe' option. Looks like everything works fine now. You > can forgot my previous message. Good. To address your other message: > In another vein, I found that it's a bit sad that the information about DVD > struct

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread Etienne Desautels
On 2015-09-14, at 12:01, Nicolas George wrote: > L'octidi 28 fructidor, an CCXXIII, Etienne Desautels a écrit : >> In another vein, I found that it's a bit sad that the information about DVD >> structure but mostly about dvd2concat.pl is almost inexistent. For something >> that's common use with

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread petesea
On Mon, 14 Sep 2015, Etienne Desautels wrote: On 2015-09-14, at 12:01, Nicolas George wrote: If you are really courageous, you can endeavour to dig the patches for complete DVD support and bring them up to date and up to standards. This would be outstanding! But it is a lot of work, because t

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-14 Thread Etienne Desautels
On 2015-09-14, at 19:52, pete...@frontier.com wrote: > On Mon, 14 Sep 2015, Etienne Desautels wrote: > >> On 2015-09-14, at 12:01, Nicolas George wrote: >> >>> If you are really courageous, you can endeavour to dig the patches for >>> complete DVD support and bring them up to date and up to st

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-09-28 Thread Etienne Desautels
On 2015-09-14, at 19:52, pete...@frontier.com wrote: > > You may want to look into vgtmpeg - http://godromo.com/gmt/vgtmpeg > > It might be nice if the ffmpeg and vgtmpeg developers could get together and > see if the dvd/bluray code from vgtmpeg could be put directly into ffmpeg. I finally tr

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-10-02 Thread Etienne Desautels
Hi, After more testing extracting images from DVD using dvd2concat, it looks like that when I use the seek option before the input, to have a fast extraction, only keyframes are extracted instead of the exact frames. I tried also by putting a second seek option after the input, to go fast near

Re: [FFmpeg-user] Extract images from concatenate .VOB

2015-10-07 Thread Etienne Desautels
Hi, I'm still trying to extract frames accurately from DVD using dvd2concat to produce a concat text file and seek option before the input, so extraction is fast. I realized that my previous tests were done with an old version of FFmpeg. That was a mistake. I redone my tests with version 2.8