Hi!
To get 'I' frame only encoding I thought the method was to
specify the min and max GOP size to be 1. That seems to just
put the encoder to sleep forever after printing out "Frame 1 I -1 0"
Using
(source of y4m data) | \
mpeg2enc -D 10 -M 2 -g 1 -G 1 -E -10 -f 8 -K tmpgenc -q 6 -o foo.m2v
Gives:
INFO: [mpeg2enc] SETTING EXTENDED MMX for MOTION!
INFO: [mpeg2enc] SETTING MMX for TRANSFORM!
INFO: [mpeg2enc] SETTING EXTENDED MMX for PREDICTION!
INFO: [mpeg2enc] Selecting DVD output profile
INFO: [mpeg2enc] Assuming norm NTSC
INFO: [mpeg2enc] Encoding MPEG-2 video to redhotridinghood.m2v
INFO: [mpeg2enc] Horizontal size: 704 pel
INFO: [mpeg2enc] Vertical size: 480 pel
INFO: [mpeg2enc] Aspect ratio code: 2 = 4:3 display
INFO: [mpeg2enc] Frame rate code: 4 = 30000.0/1001.0 (NTSC VIDEO)
INFO: [mpeg2enc] Bitrate: 7500 KBit/s
INFO: [mpeg2enc] Quality factor: 6 (Quantisation = 6) (1=best, 31=worst)
INFO: [mpeg2enc] Field order for input: bottom-field-first
INFO: [mpeg2enc] Sequence unlimited length
INFO: [mpeg2enc] Search radius: 16
INFO: [mpeg2enc] GOP SIZE RANGE 1 TO 1
INFO: [mpeg2enc] Setting colour/gamma parameters to "NTSC"
INFO: [mpeg2enc] Progressive format frames = 0
INFO: [mpeg2enc] TMPGEnc Quantization matrix
INFO: [mpeg2enc] Buffering 4 frames
INFO: [mpeg2enc] SETTING MMX and EXTENDED MMX for QUANTIZER!
INFO: [mpeg2enc] GOP start (1 frames)
INFO: [mpeg2enc] GOP start (1 frames)
INFO: [mpeg2enc] Frame 0 I 0 0
INFO: [mpeg2enc] Frame 1 I -1 0
INFO: [mpeg2enc] GOP start (1 frames)
and there it sits. At least it's not using any cpu time ;)
If the "-M" parameter is changed to be "-M 1" rather than "-M 2"
the encoding proceeds.
Feels like a threading issue of some kind.
Cheers,
Steven Schultz
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