Re: [Libav-user] investigating runtime demux performance

2020-05-19 Thread Carl Eugen Hoyos
Am Di., 19. Mai 2020 um 14:49 Uhr schrieb : > > > >> The 3.2.14 libraries are clearly twice as fast as the 4.2.2 libraries, > >> as least with the h.265 media files I'm testing with. > > > Then please run git bisect, but allow me to repeat that it may make > > sense to reproduce with ffmpeg (which

Re: [Libav-user] investigating runtime demux performance

2020-05-19 Thread bsenftner
>> The 3.2.14 libraries are clearly twice as fast as the 4.2.2 libraries, >> as least with the h.265 media files I'm testing with. >Then please run git bisect, but allow me to repeat that it may make sense to >reproduce with ffmpeg (which would make your bug report much, much simpler). > >Carl

Re: [Libav-user] MJPEG Quantization tables

2020-05-19 Thread Виктор Мулин
Sorry, the information that the picture has acquired blue shades is false! вт, 19 мая 2020 г. в 11:53, Виктор Мулин <17se...@gmail.com>: > I tried the following before opening the encoder: > codec_context-> intra_matrix = (uint16_t *) std_luminance_quant_tbl; > codec_context-> croma_intra_matrix

[Libav-user] Issue with hardware decoding of H265 video stream via QSV

2020-05-19 Thread Vivekanand
Hello, I am trying to decode H265 frames in hardware (QSV) via ffmpeg (3.4.7) on Intel CPU. Following command works perfectly on terminal ( OS : CentOS): * build/lin_x64/bin/ffmpeg **-c:v hevc_qsv -load_plugin hevc_hw **-hwaccel qsv -i -f null -* I am trying to re-produce similar behaviour

Re: [Libav-user] MJPEG Quantization tables

2020-05-19 Thread Виктор Мулин
I tried the following before opening the encoder: codec_context-> intra_matrix = (uint16_t *) std_luminance_quant_tbl; codec_context-> croma_intra_matrix = (uint16_t *) std_crominance_quant_tbl; The picture has acquired a blue tint. When packet was written to a file, DQT tables were not added to