[FFmpeg-trac] #8516(ffmpeg:new): Incorrect hint interpretation

FFmpeg trac at avcodec.org
Mon Feb 10 04:21:50 EET 2020


#8516: Incorrect hint interpretation
--------------------------------+----------------------------------
             Reporter:  junkl   |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  4.2
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+----------------------------------
 found at 4.1.3 with ffmpeg-20200203-1c15111-win64-static.
 CMD: ffmpeg -i <src>.mp4 -codec:v copy <dst>.mp4
 (but. Not reproduced in 2.5.4)

 ( "-an, -sn, -dn, -map_chapters -1, -map 0:0, -map 0:v ...")
 playtime of src file is "15s 16ms", but playtime of result is 1min.
 (play video (without audio) again at 45s.)

 mediainfo is
 {{{
 General
 Complete name                            :
 9e177aa05c9b7229c045df9266693b40.mp4
 Format                                   : MPEG-4
 Format profile                           : Base Media
 Codec ID                                 : isom
 File size                                : 13.8 MiB
 Duration                                 : 15s 24ms
 Overall bit rate mode                    : Variable
 Overall bit rate                         : 7 706 Kbps
 Encoded date                             : UTC 1970-01-01 00:00:00
 Tagged date                              : UTC 2020-02-03 05:35:55
 Writing application                      : Lavf53.24.0 mp4creator 1.6.1d
 mp4creator 1.6.1d

 Video
 ID                                       : 1
 Format                                   : MPEG-4 Visual
 Format profile                           : Simple at L1
 Format settings, BVOP                    : No
 Format settings, QPel                    : No
 Format settings, GMC                     : No warppoints
 Format settings, Matrix                  : Default (H.263)
 Codec ID                                 : 20
 Duration                                 : 15s 16ms
 Bit rate mode                            : Variable
 Bit rate                                 : 7 444 Kbps
 Maximum bit rate                         : 10.3 Mbps
 Width                                    : 1 920 pixels
 Height                                   : 1 080 pixels
 Display aspect ratio                     : 16:9
 Frame rate mode                          : Constant
 Frame rate                               : 29.970 fps
 Color space                              : YUV
 Chroma subsampling                       : 4:2:0
 Bit depth                                : 8 bits
 Scan type                                : Progressive
 Compression mode                         : Lossy
 Bits/(Pixel*Frame)                       : 0.120
 Stream size                              : 13.3 MiB (97%)
 Writing library                          : Lavc53.41.0
 Language                                 : English
 Encoded date                             : UTC 1970-01-01 00:00:00
 Tagged date                              : UTC 1970-01-01 00:00:00

 Audio
 ID                                       : 2
 Format                                   : AAC
 Format/Info                              : Advanced Audio Codec
 Format profile                           : LC
 Codec ID                                 : 40
 Duration                                 : 15s 24ms
 Bit rate mode                            : Variable
 Bit rate                                 : 96.0 Kbps
 Maximum bit rate                         : 99.9 Kbps
 Channel(s)                               : 2 channels
 Channel positions                        : Front: L R
 Sampling rate                            : 44.1 KHz
 Compression mode                         : Lossy
 Stream size                              : 176 KiB (1%)
 Language                                 : English
 Encoded date                             : UTC 1970-01-01 00:00:00
 Tagged date                              : UTC 1970-01-01 00:00:00

 Other #1
 ID                                       : 3
 Type                                     : Hint
 Format                                   : RTP
 Codec ID                                 : rtp
 Duration                                 : 14s 850ms
 Language                                 : English
 Encoded date                             : UTC 2020-02-03 05:35:55
 Tagged date                              : UTC 2020-02-03 05:35:55
 Source duration                          : 15015
 Source frame count                       : 450
 Source stream size                       : 276301
 Stream size                              : 275609

 Other #2
 ID                                       : 4
 Type                                     : Hint
 Format                                   : RTP
 Codec ID                                 : rtp
 Duration                                 : 14s 994ms
 Language                                 : English
 Encoded date                             : UTC 2020-02-03 05:35:55
 Tagged date                              : UTC 2020-02-03 05:35:55
 Source duration                          : 15023
 Source frame count                       : 134
 Source stream size                       : 24992
 Stream size                              : 24896
 Bit rate mode                            : VBR
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8516>
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