[FFmpeg-devel] [GSOC] [PATCH] TensorFlow backend introduction for DNN module

[Pedro Arthur]

Pushed.

Thanks.

2018-06-07 12:29 GMT-03:00 Sergey Lavrushkin <dualfal at gmail.com>:
> 2018-06-06 17:22 GMT+03:00 Pedro Arthur <bygrandao at gmail.com>:
>>
>> Hi,
>>
>> 2018-06-05 20:23 GMT-03:00 Sergey Lavrushkin <dualfal at gmail.com>:
>> > Here is the patch, that fixes described issues.
>> When I try to run (video input), when tf is not enabled in configure it
>> crashes.
>>
>>
>> $ffmpeg -i in.mp4 -vf srcnn=dnn_backend=tensorflow out.mp4
>>
>> ffmpeg version N-91232-g256386fd3e Copyright (c) 2000-2018 the FFmpeg
>> developers
>>   built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
>>   configuration:
>>   libavutil      56. 18.102 / 56. 18.102
>>   libavcodec     58. 19.105 / 58. 19.105
>>   libavformat    58. 17.100 / 58. 17.100
>>   libavdevice    58.  4.100 / 58.  4.100
>>   libavfilter     7. 25.100 /  7. 25.100
>>   libswscale      5.  2.100 /  5.  2.100
>>   libswresample   3.  2.100 /  3.  2.100
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'in.mp4':
>>   Metadata:
>>     major_brand     : isom
>>     minor_version   : 512
>>     compatible_brands: isomiso2mp41
>>     encoder         : Lavf58.17.100
>>   Duration: 00:06:13.70, start: 0.000000, bitrate: 5912 kb/s
>>     Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v /
>> 0x7634706D), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 5777 kb/s, 29.97
>> fps, 29.97 tbr, 30k tbn, 30k tbc (default)
>>     Metadata:
>>       handler_name    : VideoHandler
>>     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
>> stereo, fltp, 128 kb/s (default)
>>     Metadata:
>>       handler_name    : SoundHandler
>> Stream mapping:
>>   Stream #0:0 -> #0:0 (mpeg4 (native) -> mpeg4 (native))
>>   Stream #0:1 -> #0:1 (aac (native) -> aac (native))
>> Press [q] to stop, [?] for help
>> free(): invalid pointer
>> Aborted (core dumped)
>>
>>
>>
>> When the output is an image, t does not crashes but neither fallback to
>> native
>>
>>
>> $ffmpeg -i in.jpg -vf srcnn=dnn_backend=tensorflow out.png
>>
>> ffmpeg version N-91232-g256386fd3e Copyright (c) 2000-2018 the FFmpeg
>> developers
>>   built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
>>   configuration:
>>   libavutil      56. 18.102 / 56. 18.102
>>   libavcodec     58. 19.105 / 58. 19.105
>>   libavformat    58. 17.100 / 58. 17.100
>>   libavdevice    58.  4.100 / 58.  4.100
>>   libavfilter     7. 25.100 /  7. 25.100
>>   libswscale      5.  2.100 /  5.  2.100
>>   libswresample   3.  2.100 /  3.  2.100
>> Input #0, image2, from 'in.jpg':
>>   Duration: 00:00:00.04, start: 0.000000, bitrate: 43469 kb/s
>>     Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown),
>> 1192x670 [SAR 1:1 DAR 596:335], 25 tbr, 25 tbn, 25 tbc
>> Stream mapping:
>>   Stream #0:0 -> #0:0 (mjpeg (native) -> png (native))
>> Press [q] to stop, [?] for help
>> [Parsed_srcnn_0 @ 0x557d3ea55980] could not create DNN module for
>> requested backend
>> [AVFilterGraph @ 0x557d3ea102c0] Error initializing filter 'srcnn'
>> with args 'dnn_backend=tensorflow'
>> Error reinitializing filters!
>> Failed to inject frame into filter network: Cannot allocate memory
>> Error while processing the decoded data for stream #0:0
>> Conversion failed!
>>
>>
>> I think you could disable the tensorflow option if it is not enable in
>> configure or fallback to native, either solution is ok for me.
>
>
> I disabled tensorflow option when it is not configured with it. Here is the
> updated patch.
> I think, crash occurred due to improper call to av_freep for dnn_module.
> Here is also the patch, that fixes this bug.
>