[FFmpeg-user] Combining .webm side by side - frame size changes

[Paul B Mahol]

Dana 24. 11. 2015. 16:25 osoba "Mike Grommet" <mgrommet at techfriends.com>
napisala je:
>
> Thank you both for your assistance.
>
> Hm, so far, initial tests using hstack do combine the videos - but I'm
losing the audio for one of the streams in the final video.
>
>

For audio use amerge or amix.

>
>
> On 11/24/2015 9:15 AM, Moritz Barsnick wrote:
>>
>> On Tue, Nov 24, 2015 at 15:20:03 +0100, Paul B Mahol wrote:
>>>>
>>>> Something like
>>>> $ ./ffmpeg -i a.webm -i b.webm -filter_complex
"[0:v]scale=640:480[left];
>>>> [1:v]scale=640:480[right]; [left][right]vstack[out] -map [out] -map
0:a -map
>>>> 1:a c.webm
>>>
>>> hstack is for side by side. vstack is for top/bottom.
>>
>> Good catch. My command created legal output, but nothing like intended.
>> ;-) So much for not testing my command line. :-P
>>
>> Thanks!
>> Moritz
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>
>
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