[FFmpeg-user] how to ­get h264 stream from webc­am with hardware H264 en

Fing Cmo fingcmo at gmail.com
Fri Dec 21 22:34:11 CET 2012


Thanks for the response. I did not think this was top posting since I was
asking you to clarify the command that you said worked for you in response
to the question of this thread. Maybe I still don't know what top posting
is :(

As for hardware encoding being slower,  can you provide link of that
I am working on a benchmarking project to academically prove or disprove
this in ARM chips with HW H264 accelerators.

On Dec 21, 2012 10:50 AM, "Carl Eugen Hoyos" <cehoyos at ag.or.at> wrote:

> Fing Cmo <fingcmo <at> gmail.com> writes:
> > What part in the command below specifies the hardware
> > acceleration part in the question?
> (Sorry, I don't understand this question.)
> > I am also interested in how ffmpeg can be told to use
> > HW encoder instead of libx264 software codec.
> Short answer:
> Patch welcome!
> Long answer:
> All (?) developers here seem to believe that hardware
> encoding is both slower and of lower quality than
> x264, so it does not make much sense to actively work
> on integrating hardware encoding (but see above).
> Reading the hardware-encoding annex of the latest
> Russian h264 encoder comparison, I tend to agree, but
> maybe you can point us to a test that produces a
> different result?
> Please do not top-post here, Carl Eugen
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