Ronald S. Bultje <[email protected]> added the comment:
I'm working on this one, they use the mp4 muxer, aac encoder (faac) and a
yet-to-be-identified video encoder "dcm2" which is an obfuscated symbol, might
be x264 or mpeg4 or so. There's a lot of "dcm2_*" and "dcm_*" symbols which
refer to existing thresholds with a different prefix in ff:
000e0d50 s _dcm2_dc_threshold
00060330 t _dcm2_ed_block
0005e7a4 t _dcm2_ed_blocks
00064cec t _dcm2_ed_dc
000641c0 t _dcm2_ed_gop_134
0005ce84 T _dcm2_ed_po
00063818 t _dcm2_ed_visual_object_134
00063a0c t _dcm2_ed_vol_134
00064440 T _dcm2_ed_zd_134
000f2a58 D _dcm2_encoder
000647d8 T _dcm2_pred_ac
0006007c t _dcm2_sp_block_length
00064d8c t _dcm2_sp_dc_length
There's also a lot of "dm_*" symbols, which are "ff_*" in ffmpeg ("dm_eval2",
"dm_inverse", "dm_sqrt"), so there's clearly some form of symbol obfuscation
going on.
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FFmpeg issue tracker <[email protected]>
<https://roundup.ffmpeg.org/roundup/ffmpeg/issue752>
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