[FFmpeg-user] -vtag 'xvid' broken in 4.1

[Paul B Mahol]

On 11/8/18, Reindl Harald <h.reindl at thelounge.net> wrote:
>
> Am 08.11.18 um 13:24 schrieb Paul B Mahol:
>> On 11/8/18, Reindl Harald <h.reindl at thelounge.net> wrote:
>>> that worked over many years now and with 4.1 "[mp4 @ 0x5618adfe4b80]
>>> Could not find tag for codec mpeg4 in stream #0, codec not currently
>>> supported in container"
>>
>> Probably because it was never valid?
>
> bla....
>
> https://trac.ffmpeg.org/wiki/Encode/MPEG-4
>
>  ...and the native encoder mpeg4:
>
> ffmpeg -i input.avi -c:v mpeg4 -vtag xvid output.avi
>
> The native encoder has the advantage of not requiring an external
> library. Both encoders should provide a similar output, but for lower
> bitrates/quality (e.g. 1000 kBit/s for 720p content), libxvid will
> deliver better quality than mpeg4.

Some minimal knowledge is required to work with ffmpeg.

In your case avi container is one thing and mp4 is another.