[Libav-user] Encode frames with h264 and muxing to mp4

[Suprith Gowda]

Hi Ricky,

Which version of ffmpeg you are using.
use AVStream.time_base , then your mp4 is readable.


Thanks
suprith

On Tue, Apr 12, 2016 at 7:49 PM, Riccardo Corsi <riccardo.corsi at kairos3d.it>
wrote:

> Hi all,
>
> I'm trying to code in my application a way to encode some frames I have in
> memory into an h264 mp4 video, which is exactly what I get from ffmpeg tool
> with the frames dumped to images and with following command:
> ffmpeg -f image2 -framerate 30 -i frame_%04d.jpg -vcodec libx264 -b:v
> 9600k  samplevideo.mp4
>
> Now I achieved to encode a raw stream with h264 by following the
> decoding_encoding.c example.
>
> I'm lost with the muxing.
> Even the simple muxing.c example gives me some warning (here below) and
> then hangs forever... if I kill it, the produced mp4 is not readable.
>
> --- warnings ----------------------------------------
>  Stream #0:0: Video: h264 (libx264), yuv420p, 352x288, q=-1--1, 400 kb/s,
> 25 tbc
>     Stream #0:1: Audio: aac (LC), 44100 Hz, 2 channels, fltp, 64 kb/s
> [mp4 @ 00000188e56e64c0] Using AVStream.codec.time_base as a timebase hint
> to the muxer is deprecated. Set AVStream.time_base instead.
> [mp4 @ 00000188e56e64c0] Using AVStream.codec.time_base as a timebase hint
> to the muxer is deprecated. Set AVStream.time_base instead.
> --------------------------------------------------------
>
> Besides that, I'm not sure how to combine the encoding example with the
> muxing one - can you provide a good example showing how to mix encoding +
> muxing?
>
> Thank you,
> Ricky
>
>
>
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