вс, 28 июн. 2026 г., 15:40 Andrew Randrianasulu <randrianasulu@gmail.com>:
As Andrea noted 

ffv1.mkv preset no longer works, file encodes but crash cingg on reimport.

ffmpeg itself behaves .. strange

ffmpeg -i zeldaHQ.flv  -c:v ffv1 -default_mode 0 -frames 100 mkv_tedt.mkv -loglevel debug

only muxes 3 frames?

ah, this one was due to misuse of frames, now it must be

-frames:v


but ffv1 mov also failed, as well as ffmpeg (cli) encoded ffv1 mkv 

but adding

coder=ac
range_mode=off
qtable=8bit

allowed encoded file to import. slowly (160*120! slow!)





[matroska @ 0xb400007a8916a870] stream 1 end duration = 336                                       
 [AVIOContext @ 0xb400007a59164790] Statistics: 33361 bytes written, 0 seeks, 1 writeouts           [out#0/matroska @ 0xb400007a39163010] Output file #0 (mkv_tedt.mkv):                               [out#0/matroska @ 0xb400007a39163010]   Output stream #0:0 (video): 3 frames encoded; 3 packets muxed (27141 bytes);                                                                                 
 [out#0/matroska @ 0xb400007a39163010]   Output stream #0:1 (audio): 112 frames encoded (7147 samples); 19 packets muxed (1905 bytes);       

----

but same command with -an (no audio) muxes all 100 frames ?!

vp8/vp9/theora mkv profiles seems to be unaffected