On 7/10/19, Eoff, Ullysses A <ullysses.a.e...@intel.com> wrote: >> -----Original Message----- >> From: Paul B Mahol [mailto:one...@gmail.com] >> Sent: Wednesday, July 10, 2019 7:20 AM >> To: Eoff, Ullysses A <ullysses.a.e...@intel.com> >> Cc: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org> >> Subject: Re: [FFmpeg-devel] [PATCH] avfilter: add rawdump filter >> >> On 7/10/19, Eoff, Ullysses A <ullysses.a.e...@intel.com> wrote: >> >> -----Original Message----- >> >> From: Paul B Mahol [mailto:one...@gmail.com] >> >> Sent: Wednesday, July 10, 2019 3:25 AM >> >> To: FFmpeg development discussions and patches >> >> <ffmpeg-devel@ffmpeg.org> >> >> Cc: Eoff, Ullysses A <ullysses.a.e...@intel.com> >> >> Subject: Re: [FFmpeg-devel] [PATCH] avfilter: add rawdump filter >> >> >> >> On 7/10/19, Fu, Linjie <linjie...@intel.com> wrote: >> >> >> -----Original Message----- >> >> >> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On >> >> >> Behalf >> >> >> Of Paul B Mahol >> >> >> Sent: Wednesday, July 10, 2019 15:55 >> >> >> To: FFmpeg development discussions and patches <ffmpeg- >> >> >> de...@ffmpeg.org> >> >> >> Cc: Eoff, Ullysses A <ullysses.a.e...@intel.com> >> >> >> Subject: Re: [FFmpeg-devel] [PATCH] avfilter: add rawdump filter >> >> >> >> >> >> On 7/10/19, U. Artie Eoff <ullysses.a.e...@intel.com> wrote: >> >> >> > This filter enables raw frames to be dumped to a >> >> >> > file before they are sent through the auto-inserted >> >> >> > scaler filter and useful when you want unscaled >> >> >> > raw frames in an output file. >> >> >> > >> >> >> >> >> >> Why? >> >> >> >> >> >> -f rawvideo doesn't work for you? >> >> > >> >> > unscaled raw video could be dumped through this filter in resolution >> >> > changing cases. >> >> > >> >> >> >> Maybe, I still fail how this filter is useful, when user can use split >> >> filter to dump video >> >> at any point in graph. >> >> >> > >> > If there are already other ways to achieve the same result without this >> > filter then that's great! Essentially, I'm trying to achieve exactly >> > what >> > Linjie stated so we can compare raw results across different decoder >> > solutions. And the forced insertion of the auto scaler in ffmpeg makes >> > that difficult for multi-resolution cases. >> >> Please provide examples of filtergraph where you are supposed to use >> this "filter". >> > > ffmpeg -v verbose -hwaccel vaapi -vaapi_device /dev/dri/renderD128 \ > -i input.h264 -vf 'format=nv12,rawdump=file=./ffdump.yuv' -f null - > >> > >> > Could you point me to an example of using split to achieve this? >> >> See documentation of split filter. > > Thanks. I will take a look and experiment with it.
The resolution changing support is big hack, and should not be relied upon. Use some other tool. Like gstreamer. > >> >> > >> > U. Artie >> > >> >> >> >> > IMHO, it will be great if there are some options available to >> >> > disable/enable >> >> > the auto scaling filter >> >> > in pipeline, thus the whole stream doesn't need to be scaled into >> >> > the >> >> > same >> >> > size of the first frame. >> >> > The difference in scale algorithms will make it hard to compare the >> >> > output >> >> > with other decoder. >> >> > >> >> > - linjie >> >> > _______________________________________________ >> >> > ffmpeg-devel mailing list >> >> > ffmpeg-devel@ffmpeg.org >> >> > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel >> >> > >> >> > To unsubscribe, visit link above, or email >> >> > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". >> > > _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
