Opened 5 years ago
Last modified 3 years ago
#7909 new defect
Missing frames after encoding
Reported by: | aleksid2 | Owned by: | |
---|---|---|---|
Priority: | normal | Component: | undetermined |
Version: | unspecified | Keywords: | |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
How to reproduce:
ffmpeg.exe -y -i src.mp4 -c:v libx264 -preset slow -b:v 8000k dst.mp4 FFmpeg 4.1.3, Win64, built by Zeranoe. After re-encoding of my source video file with libx264 and bitrate 8000k mode I see many missing frames (about 300 frames). After re-encoding I see only 2 images and 3rd image is missing. I played created video in VLC player 3.0.6, MPC-HC, Media player in Windows 10. ffplay.exe plays correctly created video. If I use -crf 22 instead of bitrate mode created video looks correctly in all players. Source video (src.mp4) for testing: https://drive.google.com/open?id=1gK06QtN8IqQNwAZeJdg7lbQgX0tkjaOn
Attachments (1)
Change History (5)
by , 5 years ago
comment:1 by , 5 years ago
comment:2 by , 5 years ago
Component: | ffmpeg → undetermined |
---|---|
Version: | 4.1 → unspecified |
Please test current FFmpeg git head and provide the command line you tested together with the complete, uncut console output to make this a valid ticket.
comment:3 by , 5 years ago
Same problem with latest FFmpeg (May 17, 2019) from Zeranoe - ffmpeg-20190517-96c79d4-win64-static.zip
D:\5\latest-ffmpeg>ffmpeg -y -i src.mp4 -c:v libx264 -preset slow -b:v 8000k dst.mp4 ffmpeg version N-93884-g96c79d4e1f Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8.3.1 (GCC) 20190414 configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt libavutil 56. 28.100 / 56. 28.100 libavcodec 58. 52.101 / 58. 52.101 libavformat 58. 27.103 / 58. 27.103 libavdevice 58. 7.100 / 58. 7.100 libavfilter 7. 53.101 / 7. 53.101 libswscale 5. 4.101 / 5. 4.101 libswresample 3. 4.100 / 3. 4.100 libpostproc 55. 4.100 / 55. 4.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.20.100 Duration: 00:00:28.36, start: 0.000000, bitrate: 995 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 992 kb/s, 29.93 fps, 29.97 tbr, 11988 tbn, 119.88 tbc (default) Metadata: handler_name : VideoHandler Stream mapping: Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264)) Press [q] to stop, [?] for help [libx264 @ 000001c03251c880] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX [libx264 @ 000001c03251c880] profile Progressive High, level 5.0, 4:2:0, 8-bit [libx264 @ 000001c03251c880] 264 - core 157 r2970 5493be8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 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=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=8000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 Output #0, mp4, to 'dst.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.27.103 Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1920x1080, q=-1--1, 8000 kb/s, 29.97 fps, 11988 tbn, 29.97 tbc (default) Metadata: handler_name : VideoHandler encoder : Lavc58.52.101 libx264 Side data: cpb: bitrate max/min/avg: 0/0/8000000 buffer size: 0 vbv_delay: -1 frame= 849 fps= 32 q=-1.0 Lsize= 6733kB time=00:00:28.22 bitrate=1953.9kbits/s speed=1.05x video:6722kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.161421% [libx264 @ 000001c03251c880] frame I:5 Avg QP: 1.84 size:1170525 [libx264 @ 000001c03251c880] frame P:214 Avg QP: 0.85 size: 3705 [libx264 @ 000001c03251c880] frame B:630 Avg QP: 1.18 size: 376 [libx264 @ 000001c03251c880] consecutive B-frames: 0.9% 0.2% 0.4% 98.5% [libx264 @ 000001c03251c880] mb I I16..4: 32.1% 9.3% 58.6% [libx264 @ 000001c03251c880] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 4.0% 0.0% 0.0% 0.0% 0.0% skip:96.0% [libx264 @ 000001c03251c880] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 2.3% 0.0% 0.0% direct: 0.3% skip:97.4% L0:73.2% L1:26.8% BI: 0.0% [libx264 @ 000001c03251c880] final ratefactor: -9.32 [libx264 @ 000001c03251c880] 8x8 transform intra:9.3% inter:23.1% [libx264 @ 000001c03251c880] direct mvs spatial:99.4% temporal:0.6% [libx264 @ 000001c03251c880] coded y,uvDC,uvAC intra: 84.2% 84.9% 84.5% inter: 0.5% 0.7% 0.7% [libx264 @ 000001c03251c880] i16 v,h,dc,p: 50% 5% 25% 20% [libx264 @ 000001c03251c880] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 18% 14% 6% 8% 8% 10% 8% 14% [libx264 @ 000001c03251c880] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 9% 12% 8% 10% 11% 9% 12% 12% [libx264 @ 000001c03251c880] i8c dc,h,v,p: 69% 9% 10% 12% [libx264 @ 000001c03251c880] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 000001c03251c880] ref P L0: 83.1% 0.0% 7.9% 8.6% 0.3% [libx264 @ 000001c03251c880] ref B L0: 34.4% 65.5% 0.1% 0.0% [libx264 @ 000001c03251c880] ref B L1: 100.0% 0.0% [libx264 @ 000001c03251c880] kb/s:1943.65 D:\5\latest-ffmpeg>
comment:4 by , 3 years ago
But if this is a bug in x264, we cannot do anything. Open issue there https://code.videolan.org/videolan/x264/
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Source video shows 3 static images, they advance every 10 seconds, total duration is 28 seconds.
1920 x 1080, 30p.
It seems that libx264 incorrectly encodes such visual content with 1-pass 8000k bitrate mode.