On 6/14/20, Marton Balint <c...@passwd.hu> wrote: > > > On Sun, 14 Jun 2020, Paul B Mahol wrote: > >> Nothing happened of this, so this patch should be merged. > > What do you mean? Ass output support got added to libzvbi-teletextdec in > 2018.
And how is ass output support relevant to give FFmpeg decoder support? > > Regards, > Marton > > >> >> On 4/26/18, Marton Balint <c...@passwd.hu> wrote: >>> >>> On Thu, 26 Apr 2018, Aman Gupta wrote: >>> >>>> On Thu, Apr 26, 2018 at 8:12 AM, Nicolas George <geo...@nsup.org> wrote: >>>> >>>>> Aman Gupta (2018-04-26): >>>>> > Another reason I discounted libzvbi is because it seems unmaintained, >>>>> > without a new release is over 5 years. >>>>> >>>>> Did the teletext standard evolve in the past five years? >>>>> >>>> >>>> I don't know, but there it is atleast one bug causing tests to fail on >>>> macOS which has been unfixed for 4 years. >>>> >>>> I managed to install libzvbi by hand and try it out. With `-txt_format >>>> text`, the generated output text is the same but without >>>> positions/colors. >>>> The ASS positioning code could be ported over, but it looks like >>>> vbi_print_page_region() strips out all the color information so there >>>> doesn't seem to be an obvious way to support text coloring. >>>> >>>> The zvbi decoder also hardcodes a (configurable) 30s end time per >>>> subtitle, >>>> which causes them to pile up on the screen and not disappear when >>>> they're >>>> supposed to. The logic from my decoder could also probably be ported >>>> over, >>>> under a new `-real_time 1` flag like I added to ccaption_dec last year. >>>> >>>> Here's a side by side comparison: >>>> https://dzwonsemrish7.cloudfront.net/items/2x1z3k0C0X3v0Z2j1F3b/teletext-sub-comparison.jpg >>>> >>>> I agree it would be ideal to have only one teletext decoder that works >>>> for >>>> everyone. However I'm done with my teletext project, and don't have time >>>> right now to redo all that work in the zvbi encoder. I also live in an >>>> ATSC >>>> region and don't use teletext myself, so I don't really care whether or >>>> not >>>> my decoder is merged into ffmpeg. I only shared it because some people >>>> on >>>> IRC expressed interest. >>> >>> I will try integrating the ASS formatting part of your patch to the >>> libzvbi decoder, and see how it goes. >>> >>> Regards, >>> Marton >>> _______________________________________________ >>> ffmpeg-devel mailing list >>> ffmpeg-devel@ffmpeg.org >>> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel >>> >> _______________________________________________ >> 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". _______________________________________________ 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".