[FFmpeg-devel] The Crystalhd video decoder is broken - last ffmpeg good commit: 6d160afab2fa8d3bfb216fee96d3537ffc9e86e8

wallak at free.fr wallak at free.fr
Tue Mar 14 22:53:31 EET 2017

I've a first patch, working with the software decoder. But it fails with the crystalhd decoder. If you know how to fix it.


----- Mail original -----
De: "Philip Langdale" <philipl at overt.org>
À: "Marton Balint" <cus at passwd.hu>
Cc: "FFmpeg development discussions and patches" <ffmpeg-devel at ffmpeg.org>
Envoyé: Mardi 14 Mars 2017 04:40:34
Objet: Re: [FFmpeg-devel] The Crystalhd video decoder is broken - last ffmpeg good commit: 6d160afab2fa8d3bfb216fee96d3537ffc9e86e8

On Mon, 13 Mar 2017 19:39:35 -0700
Philip Langdale <philipl at overt.org> wrote:

> On Tue, 14 Mar 2017 02:49:27 +0100 (CET)
> wallak at free.fr wrote:
> > Indeed 7447ec91b5a692121b81a04c6501a5811d867775 is working; But I
> > have the following errors with the last ffmpeg git state:
> > [h264_crystalhd @ 0x7fda3c060500] This decoder requires using the
> > avcodec_send_packet() API. Last message repeated 456 times ...
> > 
> > I've 'bisected' this last issue; The last good commit (with ffplay
> > -vcodec h264_crystalhd <file> working without error) is the
> > following one: 234d3cbf469e9feef255e229202d4b029e66e9fe
> > 
> > Is there a configuration flag to fix this issue? A software update
> > is required?  
> Heh - I switched the crystalhd decoder to the new send_packet API in
> the next change, so that's entirely expected. CrystalHD basically
> requires the new API as it allows for flexibility in how often frames
> are returned vs submitted to the decoder; I only ever got it barely
> working with the old API using vicious hacks that failed in many edge
> cases.
> As it uses the new API, the application using the decoder must also
> support the new API. 'ffmpeg' does, but I guess ffplay does not. My
> first reaction is to ask why you're using ffplay. I'd recommend using
> mpv - which is much more capable, and does support the new API; it's
> what I use for all my testing.


Would you be interested in updating ffplay to use the new decode API?

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