On Mon, Nov 29, 2021 at 07:48:25PM +0000, Soft Works wrote: > This commit actually enables subtitle filtering in ffmpeg by > sending and receiving subtitle frames to and from a filtergraph. > > The heartbeat functionality from the previous sub2video implementation > is retained and applied to all subtitle frames (bitmap, text, ..). > > The other part of sub2video functionality is retained by > auto-insertion of the new graphicsub2video filter. > > Justification for changed test refs: > > - sub2video > The new results are identical excepting the last frame which > is due to the implementation changes > > - sub2video_basic > The previous results had some incorrect output because multiple > frames had the same dts > The non-empty content frames are visually identical, the different > CRC is due to the different blending algorithm that is being used. > > - sub2video_time_limited > The third frame in the previous ref was a repetition, which doesn't > happen anymore with the new subtitle filtering. > > - sub-dvb > Running ffprobe -show_frames on the source file shows that there > are 7 subtitle frames with 0 rects in the source at the start > and 2 at the end. This translates to the 14 and 4 additional > entries in the new test results. > > - filter-overlay-dvdsub-2397 > Overlay results have slightly different CRCs due to different > blending implementation > > Signed-off-by: softworkz <softwo...@hotmail.com>
This breaks: ./ffmpeg -i ~/tickets/153/bbc_small.ts -filter_complex '[0:v][0:s]overlay' -qscale 2 -t 3 -y file.avi Press [q] to stop, [?] for help subtitle input filter: decoding size 0x0 Auto-inserting graphicsub2video filter [swscaler @ 0x5578a748db00] Value 0.000000 for parameter 'srcw' out of range [1 - 2.14748e+09] [swscaler @ 0x5578a748db00] Value 0.000000 for parameter 'srch' out of range [1 - 2.14748e+09] [swscaler @ 0x5578a748db00] Value 0.000000 for parameter 'dstw' out of range [1 - 2.14748e+09] [swscaler @ 0x5578a748db00] Value 0.000000 for parameter 'dsth' out of range [1 - 2.14748e+09] [graphicsub2video @ 0x5578a735e880] [IMGUTILS @ 0x7ffd6097eab0] Picture size 0x0 is invalid Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Error while processing the decoded data for stream #0:0 [libmp3lame @ 0x5578a73d3380] 3 frames left in the queue on closing Conversion failed! [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws. -- Plato
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