LGTM.
Should push soon.

BTW I just noticed that the tensorflow backend is failling to load SR
filter models.

$ python tools/python/convert.py sr_models/srcnn.pb
$ ./ffmpeg -i input.jpg -vf
sr=model=srcnn.model:dnn_backend=tensorflow out_srcnn_tf.png

The above command fails.
It seems commit ccbab41039af424237eaac5c302c293ab97540f8 is the
problem. I thought I had tested it but clearly I made a mistake
somewhere in the process.
I suppose you have the .pb files to test it, but let me know if you need them.

Em sex, 9 de ago de 2019 às 12:25, Guo, Yejun <yejun....@intel.com> escreveu:
>
>
>
> > -----Original Message-----
> > From: Guo, Yejun
> > Sent: Tuesday, July 30, 2019 9:26 AM
> > To: ffmpeg-devel@ffmpeg.org
> > Cc: Guo, Yejun <yejun....@intel.com>
> > Subject: [PATCH 2/2] convert_from_tensorflow.py: support conv2d with 
> > dilation
> >
> > conv2d with dilation > 1 generates tens of nodes in graph, it is not
> > easy to parse each node one by one, so we do special tricks to parse
> > the conv2d layer.
> >
> > Signed-off-by: Guo, Yejun <yejun....@intel.com>
> > ---
> >  tools/python/convert_from_tensorflow.py | 80
> > ++++++++++++++++++++++++---------
> >  1 file changed, 59 insertions(+), 21 deletions(-)
>
> this patch set asks for review, thanks.
>
> I've locally finished more patches to improve dnn module, plan to send more 
> them set by set, since the patches have dependency.
>
> Just in case you are interested in these new patches, I've uploaded to 
> https://github.com/guoyejun/ffmpeg/tree/dnn0809.
> for your convenient, I also copy the oneline log here for each patch (from 
> newer to older) with 4 patch sets.
>
> 7eced90 libavfilter/dnn: support multiple outputs for native mode
> 28a7054 libavfilter/dnn/dnn_backend_native: find the input operand according 
> to input name
>
> 256e657 FATE/dnn: add unit test for layer maximum
> 8c616a0 libavfilter/dnn: add layer maximum for native mode.
>
> 8ec6c0c FATE/dnn: add unit test for dnn depth_to_space layer
> 09ef108 libavfilter/dnn: separate depth_to_space layer from 
> dnn_backend_native.c to a new file
> c65b59d FATE/dnn: add unit test for dnn conv2d layer
> a5d69a7 libavfilter/dnn: separate conv2d layer from dnn_backend_native.c to a 
> new file
>
> 202d323 dnn: export operand info in python script and load in c code
> 3c706a0 dnn: change .model file format to put layer number at the end of file
> 0256731 dnn: introduce dnn operand (in c code) to hold operand infos within 
> network
>
>
> Besides continuous dnn improvement, I also plan to add two generic video 
> filters for dnn.
> - a generic filter to process the content of AVFrame with different dnn 
> networks.
> and so the current specific filters such as vf_sr (some changes needed) and 
> vf_derain are no longer needed, since they can be
> included in this specific filter. And of course, in practice I'll not remove 
> them.
>
> - a generic filter to analyze the content of AVFrame to generate some side 
> data with different dnn networks. The content of AVFrame does not change.
> The application, which invokes the filter with a given dnn network, has the 
> responsibility/knowledge to parse the side data (analyze result).
>
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