Public bug reported:
MPlayer 1.1-4.8 detects the frame rate of H264 videos as -nan,
which causes the video to play very rapidly and out of synch with the audio.
The expected result is that the video plays with the correct frame rate in
synch with the audio.
This bug has been fixed in the current SVN version of MPlayer (SVN-r37244-4.8),
which identifies the frame rate in the attached example video as
ID_VIDEO_FPS=39.583 and correctly plays the video.
The bug appeared when upgrading from Precise to Trusty (Ubuntu 14.04.1 LTS)
The mplayer in Precise did not have difficulty playing these same files.
mplayer -identify mplayer_nan_framerate_bug.mp4
MPlayer 1.1-4.8 (C) 2000-2012 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing mplayer_nan_framerate_bug.mp4.
libavformat version 54.20.4 (external)
Mismatching header version 54.20.3
libavformat file format detected.
ID_VIDEO_ID=0
[lavf] stream 0: video (h264), -vid 0
ID_AUDIO_ID=0
ID_AID_0_LANG=eng
[lavf] stream 1: audio (aac), -aid 0, -alang eng
VIDEO: [H264] 1280x720 24bpp -nan fps 8717.4 kbps (1064.1 kbyte/s)
Clip info:
major_brand: isom
ID_CLIP_INFO_NAME0=major_brand
ID_CLIP_INFO_VALUE0=isom
minor_version: 0
ID_CLIP_INFO_NAME1=minor_version
ID_CLIP_INFO_VALUE1=0
compatible_brands: isom3gp4
ID_CLIP_INFO_NAME2=compatible_brands
ID_CLIP_INFO_VALUE2=isom3gp4
creation_time: 2014-08-04 15:49:46
ID_CLIP_INFO_NAME3=creation_time
ID_CLIP_INFO_VALUE3=2014-08-04 15:49:46
ID_CLIP_INFO_N=4
Load subtitles in ./
ID_FILENAME=mplayer_nan_framerate_bug.mp4
ID_DEMUXER=lavfpref
ID_VIDEO_FORMAT=H264
ID_VIDEO_BITRATE=8717376
ID_VIDEO_WIDTH=1280
ID_VIDEO_HEIGHT=720
ID_VIDEO_FPS= -nan
ID_VIDEO_ASPECT=1.7778
ID_AUDIO_FORMAT=MP4A
ID_AUDIO_BITRATE=186104
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
ID_START_TIME=0.00
ID_LENGTH=2.59
ID_SEEKABLE=1
ID_CHAPTERS=0
[vdpau] Error when calling vdp_device_create_x11: 1
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
libavcodec version 54.35.0 (external)
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
ID_VIDEO_CODEC=ffh264
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 48000 Hz, 2 ch, floatle, 186.1 kbit/6.06% (ratio: 23263->384000)
ID_AUDIO_BITRATE=186104
ID_AUDIO_RATE=48000
ID_AUDIO_NCH=2
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample)
ID_AUDIO_CODEC=ffaac
Starting playback...
Unsupported AVPixelFormat 53
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
ID_VIDEO_ASPECT=1.7778
VO: [xv] 1280x720 => 1280x720 Planar YV12
A: 2.2 V: 1.9 A-V: 0.303 ct: -nan 0/ 0 ??% ??% ??,?% 0 0
Exiting... (End of file)
ID_EXIT=EOF
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: mplayer 2:1.1+dfsg1-0ubuntu3
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
Date: Mon Aug 4 19:26:25 2014
InstallationDate: Installed on 2012-05-29 (797 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
SourcePackage: mplayer
UpgradeStatus: Upgraded to trusty on 2014-07-30 (4 days ago)
** Affects: mplayer (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug trusty
** Attachment added: "Example video triggering the bug"
https://bugs.launchpad.net/bugs/1352447/+attachment/4169668/+files/mplayer_nan_framerate_bug.mp4
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https://bugs.launchpad.net/bugs/1352447
Title:
mplayer detects video frame rate as -nan
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