On Fri, Aug 12, 2022 at 12:51 AM Soft Works <softwo...@hotmail.com> wrote:
> > > > -----Original Message----- > > From: ffmpegagent <ffmpegag...@gmail.com> > > Sent: Saturday, June 25, 2022 11:58 AM > > To: ffmpeg-devel@ffmpeg.org > > Cc: Michael Niedermayer <mich...@niedermayer.cc>; Andreas Rheinhardt > > <andreas.rheinha...@outlook.com>; Soft Works <softwo...@hotmail.com>; > > Andriy Gelman <andriy.gel...@gmail.com>; softworkz > > <softwo...@hotmail.com> > > Subject: [PATCH v5 00/25] Subtitle Filtering 2022 > > > > > > Subtitle Filtering 2022 > > ======================= > > > > This is a substantial update to the earlier subtitle filtering patch > > series. > > A primary goal has been to address others' concerns as much as > > possible on > > one side and to provide more clarity and control over the way things > > are > > working. Clarity is is specifically important to allow for a better > > understanding of the need for a subtitle start pts value that can be > > different from the frame's pts value. This is done by refactoring the > > subtitle timing fields in AVFrame, adding a frame field to indicate > > repeated > > subtitle frames, and finally the full removal of the heartbeat > > functionality, replaced by a new 'subfeed' filter that provides > > different > > modes for arbitrating subtitle frames in a filter graph. Finally, > > each > > subtitle filter's documentation has been amended by a section > > describing the > > filter's timeline behavior (in v3 update). > > > > > > Subtitle Filtering Demos > > ======================== > > > > I published a demonstration of subtitle filtering capabilities with > > OCR, > > text and bitmap subtitle manipulation involved: Demo 1: Text- > > Manipulation > > with Bitmap Subtitles > > [https://github.com/softworkz/SubtitleFilteringDemos/tree/master/Demo > > 1] > > > As there were no objections in any regard, I hope that we could make > some progress regarding subtitle filtering soon. > > The only recent statement that has been made was something like > > "this may work in a limited number of cases but probably won't be > capable to work for the whole range of real-life situations" > > I understand how easily such statements can induce doubt into the > audience, even on those who tend and try to be neutral in their > assessments. I also think that replying once another time with > something like "no, this isn't true" won't be much impressive. > > > Instead, I'm sharing a video with you, documenting my internal > test runs for text subtitle overlay (with and without subtitle > filtering, with and without hw overlay, with a range of hw accelerations > for encoding and decoding, scaling or no scaling and two different > kinds of source files). > > The diagrams at the right are a rather consumer focused, but still > accurate. Just hwupload/download/hwmap are omitted and implied > by the data changing the "swim lanes". > > https://github.com/softworkz/SubtitleFilteringDemos/tree/master/TestRun1 > > Commands and logs on request. > > We should more forward and merge this considerable subtitle work instead of waiting for broken promises from other inactive developers. > Best wishes, > softworkz > _______________________________________________ > 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".
