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ffmpeg log example; default libx264 options for mp4 container

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May 13th, 2024
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  1. ffmpeg -i test.mkv -crf 36 output.mp4
  2. Input #0, matroska,webm, from 'test.mkv':
  3. Metadata:
  4. ENCODER : Lavf60.3.100
  5. Duration: 00:04:35.97, start: 0.000000, bitrate: 3851 kb/s
  6. Stream #0:0: Video: h264 (High 4:4:4 Predictive), gbrp(pc, gbr/unknown/unknown, progressive), 1300x800, 30 fps, 30 tbr, 1k tbn
  7. Metadata:
  8. ENCODER : Lavc60.3.100 libx264rgb
  9. DURATION : 00:04:35.966000000
  10. Stream mapping:
  11. Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  12. Press [q] to stop, [?] for help
  13. [libx264 @ 0x562192bfdb80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
  14. [libx264 @ 0x562192bfdb80] profile High 4:4:4 Predictive, level 3.2, 4:4:4, 8-bit
  15. [libx264 @ 0x562192bfdb80] 264 - core 164 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=36.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  16. Output #0, mp4, to 'output.mp4':
  17. Metadata:
  18. encoder : Lavf60.3.100
  19. Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv444p(tv, progressive), 1300x800, q=2-31, 30 fps, 15360 tbn
  20. Metadata:
  21. DURATION : 00:04:35.966000000
  22. encoder : Lavc60.3.100 libx264
  23. Side data:
  24. cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  25. frame= 8279 fps=138 q=-1.0 Lsize= 5460kB time=00:04:35.86 bitrate= 162.1kbits/s speed= 4.6x
  26. video:5363kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.813305%
  27. [libx264 @ 0x562192bfdb80] frame I:42 Avg QP:28.27 size: 29222
  28. [libx264 @ 0x562192bfdb80] frame P:2196 Avg QP:34.24 size: 1581
  29. [libx264 @ 0x562192bfdb80] frame B:6041 Avg QP:46.95 size: 131
  30. [libx264 @ 0x562192bfdb80] consecutive B-frames: 1.6% 2.4% 2.6% 93.4%
  31. [libx264 @ 0x562192bfdb80] mb I I16..4: 44.8% 35.5% 19.7%
  32. [libx264 @ 0x562192bfdb80] mb P I16..4: 1.9% 1.2% 1.0% P16..4: 0.7% 0.2% 0.1% 0.0% 0.0% skip:95.0%
  33. [libx264 @ 0x562192bfdb80] mb B I16..4: 0.0% 0.1% 0.0% B16..8: 2.0% 0.1% 0.0% direct: 0.0% skip:97.8% L0:47.0% L1:52.9% BI: 0.1%
  34. [libx264 @ 0x562192bfdb80] 8x8 transform intra:33.5% inter:36.9%
  35. [libx264 @ 0x562192bfdb80] coded y,u,v intra: 16.5% 1.5% 1.2% inter: 0.1% 0.0% 0.0%
  36. [libx264 @ 0x562192bfdb80] i16 v,h,dc,p: 41% 56% 2% 1%
  37. [libx264 @ 0x562192bfdb80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 17% 47% 1% 0% 0% 0% 0% 1%
  38. [libx264 @ 0x562192bfdb80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 35% 33% 17% 2% 3% 3% 3% 3% 3%
  39. [libx264 @ 0x562192bfdb80] Weighted P-Frames: Y:0.6% UV:0.6%
  40. [libx264 @ 0x562192bfdb80] ref P L0: 68.5% 10.5% 15.1% 5.8% 0.1%
  41. [libx264 @ 0x562192bfdb80] ref B L0: 65.6% 30.0% 4.5%
  42. [libx264 @ 0x562192bfdb80] ref B L1: 91.2% 8.8%
  43. [libx264 @ 0x562192bfdb80] kb/s:159.17
  44.  
Tags: ffmpeg Example
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