New and question with -i option

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New and question with -i option

François-Marie BILLARD
Hello,

i'm new on this list and would use ffmpeg for making a video from pictures.

I have used this command line; with 54 pictures from DSC_0527.JPG :

> ffmpeg -f image2 -i DSC_05%2d.JPG -start_number 0527 -r 12 -vcodec
> mpeg4 -b 15000k ouverture_four.mp4
>

i have this error, when i launch the command in the directory with the
pictures :

> [image2 @ 0x55b7146af8c0] Could find no file with path 'DSC_05%2d.JPG'
> and index in the range 0-4
> DSC_05%2d.JPG: No such file or directory
thank's for your help

--
François-Marie

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Re: New and question with -i option

Gyan Doshi-2


On 09-07-2020 02:50 pm, François-Marie BILLARD wrote:

> Hello,
>
> i'm new on this list and would use ffmpeg for making a video from
> pictures.
>
> I have used this command line; with 54 pictures from DSC_0527.JPG :
>
>> ffmpeg -f image2 -i DSC_05%2d.JPG -start_number 0527 -r 12 -vcodec
>> mpeg4 -b 15000k ouverture_four.mp4
>>
>
> i have this error, when i launch the command in the directory with the
> pictures :
>
>> [image2 @ 0x55b7146af8c0] Could find no file with path
>> 'DSC_05%2d.JPG' and index in the range 0-4
>> DSC_05%2d.JPG: No such file or directory

It should be

     ffmpeg -f image2 -start_number 27 -i DSC_05%2d.JPG -r 12 -vcodec
mpeg4 -b 15000k ouverture_four.mp4

`-start_number` qualifies the input so it belongs before the
corresponding input `-i`

  In ` DSC_05%2d`, 05 is a literal and so not recognized as part of the
numbering pattern.

Also, `-r 12` will cause ffmpeg to drop 13 out of every 25 images, since
ffmpeg assumes a default frame rate of 25 for image sequences.
You can override it by adding -framerate 12 for this input. (And then
drop -r 12)

     ffmpeg -f image2 -start_number 27 -framerate 12 -i DSC_05%2d.JPG
-c:v mpeg4 -b:v 15000k ouverture_four.mp4


Gyan
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Solved : Re: New and question with -i option

François-Marie BILLARD
thank's all is fine now

François-marie
Le 09/07/2020 à 11:38, Gyan Doshi a écrit :

>
>
> On 09-07-2020 02:50 pm, François-Marie BILLARD wrote:
>> Hello,
>>
>> i'm new on this list and would use ffmpeg for making a video from
>> pictures.
>>
>> I have used this command line; with 54 pictures from DSC_0527.JPG :
>>
>>> ffmpeg -f image2 -i DSC_05%2d.JPG -start_number 0527 -r 12 -vcodec
>>> mpeg4 -b 15000k ouverture_four.mp4
>>>
>>
>> i have this error, when i launch the command in the directory with the
>> pictures :
>>
>>> [image2 @ 0x55b7146af8c0] Could find no file with path
>>> 'DSC_05%2d.JPG' and index in the range 0-4
>>> DSC_05%2d.JPG: No such file or directory
>
> It should be
>
>      ffmpeg -f image2 -start_number 27 -i DSC_05%2d.JPG -r 12 -vcodec
> mpeg4 -b 15000k ouverture_four.mp4
>
> `-start_number` qualifies the input so it belongs before the
> corresponding input `-i`
>
>   In ` DSC_05%2d`, 05 is a literal and so not recognized as part of the
> numbering pattern.
>
> Also, `-r 12` will cause ffmpeg to drop 13 out of every 25 images, since
> ffmpeg assumes a default frame rate of 25 for image sequences.
> You can override it by adding -framerate 12 for this input. (And then
> drop -r 12)
>
>      ffmpeg -f image2 -start_number 27 -framerate 12 -i DSC_05%2d.JPG
> -c:v mpeg4 -b:v 15000k ouverture_four.mp4
>
>
> Gyan
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> https://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".


--
François-Marie
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