On 11/8/18 5:34 PM, Nicolas George wrote:
sean darcy (2018-11-08):
Ok. So is it possible to concatenate 2 vob's where the audio and video don't
have the same stream numbers ?
VOB do not have stream numbers (FFmpeg is inventing them on the fly), so
the question does not make any sense.
for input in *.VOB ; do
ffmpeg -i $input -c copy $(basename $input .VOB).[???]
echo $(basename $input .VOB).[???] >> concat.txt
done
ffmpeg -f concat -i concat.txt .......... out.mp4
Bigger question : is the concatenation problem here the stream numbers ?
In this instance, if the files are the ones you have shown earlier,
yes, the order in which FFmpeg detects the streams is the problem.
I suggest you read the documentation of the concat demuxer to the end,
the answer to your question is there.
Note that VOB files are also concatenable at the container level,
provided they do not contain extra junk at the beginning or the end (if
you got them directly from a DVD Video filesystem, they do and you
should NOT be using them directly).
Regards,
On 11/8/18 5:34 PM, Nicolas George wrote:
> sean darcy (2018-11-08):
>> Ok. So is it possible to concatenate 2 vob's where the audio and
video don't
>> have the same stream numbers ?
>
> VOB do not have stream numbers (FFmpeg is inventing them on the fly), so
> the question does not make any sense.
>
>> for input in *.VOB ; do
>> ffmpeg -i $input -c copy $(basename $input .VOB).[???]
>> echo $(basename $input .VOB).[???] >> concat.txt
>> done
>> ffmpeg -f concat -i concat.txt .......... out.mp4
>>
>> Bigger question : is the concatenation problem here the stream numbers ?
>
> In this instance, if the files are the ones you have shown earlier,
> yes, the order in which FFmpeg detects the streams is the problem.
>
> I suggest you read the documentation of the concat demuxer to the end,
> the answer to your question is there.
>
> Note that VOB files are also concatenable at the container level,
> provided they do not contain extra junk at the beginning or the end (if
> you got them directly from a DVD Video filesystem, they do and you
> should NOT be using them directly).
>
> Regards,
>
Thanks for the help. I've set up a complex filter. That works.
But following up on:
> if you got them directly from a DVD Video filesystem ... you
> should NOT be using them directly
So for vob's from a video dvd :
cat VTS* | ffmpeg -i - ........... out.mp4
or
ffmpeg -f concat -i list.of.vobs ...... out.mp4
is not a good idea ? Even though it does not generate any errors.
I should be using a complex filter for any vob's from a video dvd ? Who
knew ?
_______________________________________________
ffmpeg-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
[email protected] with subject "unsubscribe".
