[FFmpeg-user] problem

[Paul B Mahol]

On 5/6/19, 黄云尧 <17748643834 at 163.com> wrote:
>
>
> This version does not have libx264 itself?

It maybe have?

Have you tried using -c:v libx264 ?

>
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> 黄云尧
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> |
> 17748643834 at 163.com
> |
> 签名由网易邮箱大师定制
> On 5/6/2019 17:01，Paul B Mahol<onemda at gmail.com> wrote：
> On 5/6/19, 黄云尧 <17748643834 at 163.com> wrote:
> what can I do,need  libx264 library?
>
>
> Yes, and ffmpeg build with support for it.
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> | |
> 黄云尧
> |
> |
> 17748643834 at 163.com
> |
> 签名由网易邮箱大师定制
> On 5/6/2019 16:54，Paul B Mahol<onemda at gmail.com> wrote：
> On 5/6/19, 黄云尧 <17748643834 at 163.com> wrote:
>
>
> ffmpeg -i input.mp4 -vcodec h264 output.mp4
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> I use the command,but the video have not picture only sound.who can help me?
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>
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> For h264 you need to have build with libx264 encoder.
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> 黄云尧
> |
> |
> 17748643834 at 163.com
> |
> 签名由网易邮箱大师定制
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