Opened 5 months ago

Last modified 7 weeks ago

#7303 new defect

h264_nvenc / b_ref_mode middle creates invalid video due to Invalid DTS.

Reported by: smallishzulu Owned by:
Priority: normal Component: undetermined
Version: git-master Keywords: nvenc
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description (last modified by cehoyos)

Hello,

If b_ref_mode set to middle and b frame number is set to any number, FFmpeg gives out Invalid DTS error for mpegts.

(If bf is 0, than there is no problem. However, it is useless.)

/opt/ffmpeg/bin/ffmpeg -loglevel verbose -re -i /home/admintv/big-buck-bunny_294_1280x720.mp4  -aspect 16:9 -s 720x576 -map 0:0  -c:v:0 h264_nvenc -temporal-aq 1 -spatial-aq 1 -aq-strength 15 -2pass 1 -preset slow  -cbr 1 -rc cbr  -profile:v main   -vb 1550k -minrate 1550k -maxrate 1550k -bufsize 1550k -muxrate 1790k    -flags +ilme+ildct -top 1  -r 25 -pix_fmt yuv420p -map 0:1 -c:a:0 aac  -b:a:0 128k -g 50 -f mpegts -bf 4 -b_ref_mode middle 'udp://192.168.2.100:5000?pkt_size=188'
ffmpeg version N-91062-gf995aa8 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  configuration: --prefix=/opt/ffmpeg --enable-nonfree --enable-gpl --extra-cflags='-I/opt/ffmpeg/include -I/usr/local/include -I/usr/local/cuda/include -I/opt/ndi/sdk/include' --extra-ldflags='-L/opt/ffmpeg/lib -L/usr/local/cuda/lib64 -L/opt/ndi/sdk/lib' --bindir=/opt/ffmpeg/bin --extra-libs=-ldl --enable-libx264 --enable-libx265 --enable-nonfree --enable-gpl --enable-nvenc --enable-libzvbi --enable-libfdk-aac --enable-libzimg --enable-libzmq --enable-libfreetype --enable-static --enable-shared --enable-hardcoded-tables --enable-vdpau --enable-cuda --enable-cuvid --enable-libvpx --enable-libmp3lame --enable-libndi_newtek --enable-openssl --enable-ffnvcodec --enable-libfontconfig --enable-libfribidi --enable-cuda-sdk --enable-libnpp
  libavutil      56. 18.102 / 56. 18.102
  libavcodec     58. 19.101 / 58. 19.101
  libavformat    58. 13.102 / 58. 13.102
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 22.100 /  7. 22.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
[h264 @ 0x10b9740] Reinit context to 1280x720, pix_fmt: yuv420p
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/admintv/big-buck-bunny_294_1280x720.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    creation_time   : 1970-01-01T00:00:00.000000Z
    title           : Big Buck Bunny
    encoder         : Lavf52.13.0
  Duration: 00:09:56.46, start: 0.000000, bitrate: 2353 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline), 1 reference frame (avc1 / 0x31637661), yuv420p(left), 1280x720 [SAR 1:1 DAR 16:9], 2220 kb/s, 24 fps, 24 tbr, 24 tbn, 48 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 127 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[h264 @ 0x1127740] Reinit context to 1280x720, pix_fmt: yuv420p
[graph_1_in_0_1 @ 0x141d8c0] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x3
[graph 0 input from stream 0:0 @ 0x1a3cb80] w:1280 h:720 pixfmt:yuv420p tb:1/24 fr:24/1 sar:1/1 sws_param:flags=2
[scaler_out_0_0 @ 0x1a3de80] w:720 h:576 flags:'bicubic' interl:0
[scaler_out_0_0 @ 0x1a3de80] w:1280 h:720 fmt:yuv420p sar:1/1 -> w:720 h:576 fmt:yuv420p sar:64/45 flags:0x4
[h264_nvenc @ 0x10e0800] Loaded Nvenc version 8.1
[h264_nvenc @ 0x10e0800] Nvenc initialized successfully
[h264_nvenc @ 0x10e0800] 1 CUDA capable devices found
[h264_nvenc @ 0x10e0800] [ GPU #0 - < GeForce GTX 1080 > has Compute SM 6.1 ]
[h264_nvenc @ 0x10e0800] supports NVENC
[h264_nvenc @ 0x10e0800] AQ enabled.
[h264_nvenc @ 0x10e0800] Temporal AQ enabled.
[mpegts @ 0x10bc9c0] muxrate 1790000, pcr every 23 pkts, sdt every 595, pat/pmt every 119 pkts
Output #0, mpegts, to 'udp://192.168.2.100:5000?pkt_size=188':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: mp41
    title           : Big Buck Bunny
    encoder         : Lavf58.13.102
    Stream #0:0(und): Video: h264 (h264_nvenc) (Main), 1 reference frame, yuv420p(top first, left), 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 1550 kb/s, 25 fps, 90k tbn, 25 tbc (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : VideoHandler
      encoder         : Lavc58.19.101 h264_nvenc
    Side data:
      cpb: bitrate max/min/avg: 1550000/0/1550000 buffer size: 1550000 vbv_delay: -1
    Stream #0:1(und): Audio: aac (LC), 48000 Hz, stereo, fltp, delay 1024, 128 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01T00:00:00.000000Z
      handler_name    : SoundHandler
      encoder         : Lavc58.19.101 aac
[mpegts @ 0x10bc9c0] Invalid DTS: 7200 PTS: 3600 in output stream 0:0, replacing by guess457x
[mpegts @ 0x10bc9c0] Invalid DTS: 10800 PTS: 7200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 25200 PTS: 21600 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 28800 PTS: 25200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 46800 PTS: 39600 in output stream 0:0, replacing by guess64x
[mpegts @ 0x10bc9c0] Invalid DTS: 50400 PTS: 46800 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 64800 PTS: 61200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 68400 PTS: 64800 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 82800 PTS: 79200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 86400 PTS: 82800 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 100800 PTS: 97200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 104400 PTS: 100800 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 118800 PTS: 115200 in output stream 0:0, replacing by guess
[mpegts @ 0x10bc9c0] Invalid DTS: 122400 PTS: 118800 in output stream 0:0, replacing by guess
frame=   36 fps= 17 q=27.0 Lsize=     444kB time=00:00:02.09 bitrate=1739.5kbits/s speed=0.979x
video:342kB audio:33kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 18.366146%
Input file #0 (/home/admintv/big-buck-bunny_294_1280x720.mp4):
  Input stream #0:0 (video): 51 packets read (539726 bytes); 37 frames decoded;
  Input stream #0:1 (audio): 98 packets read (33347 bytes); 97 frames decoded (99328 samples);
  Total: 149 packets (573073 bytes) demuxed
Output file #0 (udp://192.168.2.100:5000?pkt_size=188):
  Output stream #0:0 (video): 36 frames encoded; 36 packets muxed (349930 bytes);
  Output stream #0:1 (audio): 97 frames encoded (99328 samples); 98 packets muxed (34119 bytes);
  Total: 134 packets (384049 bytes) muxed
[h264_nvenc @ 0x10e0800] Nvenc unloaded
[aac @ 0x10e3200] Qavg: 164.648
Exiting normally, received signal 2.

Attachments (1)

vlcsnap-2018-07-05-15h13m13s771.png (276.9 KB) - added by smallishzulu 5 months ago.
Broken Video (Invalid DTS)

Download all attachments as: .zip

Change History (3)

Changed 5 months ago by smallishzulu

Broken Video (Invalid DTS)

comment:1 Changed 5 months ago by cehoyos

  • Description modified (diff)
  • Keywords nvenc added
  • Version changed from unspecified to git-master

comment:2 Changed 7 weeks ago by haisk

I 've got this problem as well .

b_ref_mode does increase the compression ratio so I hope ffmpeg team can fix this problem.

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