[FFmpeg-user] HELP !

pkv.stream pkv.stream at gmail.com
Tue Aug 23 16:19:14 EEST 2016

Hi Nicolas,
since you seem to be using a windows platform I would suggest that 
instead of using ffmpeg and batch commands which seem a bit remote for 
you given your background , you turn to more user-friendly solutions 
like Handbrake where you can batch encode.
google gave me this tutorial for isntance

You have presets which you can select to suit the destination you want 
(a smartphone ?)

The h.264 encoder used is x264 as in ffmpeg.

Le 23/08/2016 à 4:50 PM, Peter van Houten a écrit :
> On 23/08/2016 12:24, Nicolas Sampson wrote:
>> Hello Peter and thank you for the immediate reply.  Yes, that spelling
>> error was picked up after I sent the email.  As I stated when I joined
>> about 1 hour ago, I am not a programmer, so I would ask you how to run the
>> formula you quoted......do I open a cmd window and type the formula in it
>> or should I save it a a <.bat> and then run it?  Do I copy the formula or
>> batch file into the <ffmpeg\bin> folder?  Sorry but I feel stupid asking
>> these questions !!!  Also is the formula set out in one line, and is there
>> a 'space' after <-y>
>> Thanks again and sorry for the trouble.
>> Regards,
>> *Nicolas "Sam" Sampson.*
>> *If you intend to forward this message, PLEASE delete my address and/or
>> details.*
> Sorry, can't help if you're using Windows, those commands were for a
> Linux shell. Maybe someone else on the list knows the equivalent Windows
> commands? The solution I gave is all on one line and yes, there is a
> space after the "-y"
> --
> Peter van Houten
>> On 23 August 2016 at 23:39, Peter van Houten <petervdh at gmail.com> wrote:
>>> On 23/08/2016 09:37, Nicolas Sampson wrote:
>>>> Greetings to one and all!!!
>>>> I am not a programmer but I had to use FFMPEG due to the fact that a lot
>>> of
>>>> TV Episodes and Documentaries are coded with the HEVC x265 codec, and my
>>>> equipment is not to read said files.  I have looked at a number of
>>> examples
>>>> to try and come up with a 'formula' that satisfies me.
>>>> What I am trying to do is: be able to copy a number of files into a
>>> folder
>>>> and have Ffmpeg convert the first, then loop to the second, etc. etc. and
>>>> obviously stop at the last one in the loop.  Is this possible, and how?
>>>> This is the current formula I use and I would like to add the loop into
>>> it:
>>>> ffmpeg -i "xxx.zzz" -c:v lib264 -framerate 25 -crf 21 -c:a libmp3lame
>>> -b:a
>>>> 190k -b:v 3000k -filter:a "volume=2" "xxx.zzz"
>>>> (I am hard of hearing, that is why I doubled the volume)
>>>> Is this formula set out correctly? Should the variables be re-arranged
>>> from
>>>> the order they are in?  Is there anything else I should add to make it
>>>> better?
>>>> I would greatly appreciate any help and assistance you can render.
>>>> Regards,
>>>> *​Otto van Dyke.*
>>>> *If you intend to forward this message, PLEASE delete my address and/or
>>>> details.*
>>> This should help you get started. You haven't mentioned your input
>>> container but as your input codec is x265, the container is probably mp4
>>> so change if necessary. There is a typo in your "lib264", it should be
>>> libx264 and I've re-positioned the video bitrate logically:
>>> for f in *.mp4; do ffmpeg -i $f -c:v libx264 -b:v 3000k -framerate 25
>>> -crf 21 -c:a libmp3lame -b:a 190k -filter:a "volume=2" -y
>>> /new_directory/${f%.mp4}.mp4; done
>>> --
>>> Peter van Houten
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