[FFmpeg-devel] [PATCH] ffmpeg_filter: initialize sub2video.end_pts together with last_pts

[Nicolas George]

Jan Ekström (12019-02-21):
> This fixes buffering of samples which causes sudden ballooning of
> memory usage in case of no subtitle samples coming in for a while if
> the filter chain had been re-initialized.
> 
> You can also see messages a la:
> "Error while add the frame to buffer source(Invalid argument)."
> disappearing after filter chain re-initializations.
> 
> Passes fate-sub2video.
> 
> Example (memory usage before patch around 700+ MiB, after around 150MiB) :
> /usr/bin/time -v ffmpeg -v verbose \
>   -i "https://megumin.fushizen.eu/samples/2019-01-18-audio_reconfig_causes_buffer_growth.ts"
> \
>   -filter_complex
> '[0:v:0]yadif=deint=interlaced[yadif_out];[yadif_out][0:s:0]overlay=eof_action=pass:repeatlast=0[overlay_out];[overlay_out]scale=1024:-2[video_out];[0:a:0]aresample=48000:async=1,aformat=channel_layouts=stereo[filtered_audio]'
> \
>   -map "[video_out]" \
>     -c:v mpeg4 \
>     -b:v 750k \
>   -map "[filtered_audio]" \
>     -c:a aac \
>     -b:a 192k \
>   "test.mp4"

Looks good, thanks.

Regards,

-- 
  Nicolas George
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