Hey all,
Hoping someone can help with this issue without me sharing the video file,
since I unfortunately can't - I've got a few hundred video files I'm
working with that have an issue where ffmpeg -i reports them as having a
duration of a few minutes, but when I try to split them into frames, I only
get one frame. The logs warn something about DTS discontinuity, but that
could be a red herring. Here's the raw output:
$ ffmpeg -i video.mpg
ffmpeg version n4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.2.1 (GCC) 20181127
configuration: --prefix=/usr --disable-debug --disable-static
--disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls
--enable-gpl --enable-ladspa --enable-libaom --enable-libass
--enable-libbluray --enable-libdrm --enable-libfreetype --enable-libfribidi
--enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug
--enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr
--enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2
--enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2
--enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared
--enable-version3
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[mpeg2video @ 0x56073afe6b00] Invalid frame dimensions 0x0.
Last message repeated 4 times
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 7 with DTS
62915937, packet 8 with DTS 8589979592
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 22 with DTS
62960937, packet 23 with DTS 8590024592
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 37 with DTS
63005937, packet 38 with DTS 8590069592
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 52 with DTS
63050936, packet 53 with DTS 8590114591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 67 with DTS
63095936, packet 68 with DTS 8590159591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 82 with DTS
63140936, packet 83 with DTS 8590204591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 97 with DTS
63185936, packet 98 with DTS 8590249591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 112 with DTS
63230936, packet 113 with DTS 8590294591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 127 with DTS
63275936, packet 128 with DTS 8590339591
[mpeg @ 0x56073afe4c80] DTS discontinuity in stream 0: packet 142 with DTS
63320936, packet 143 with DTS 8590384591
Input #0, mpeg, from 'video.mpg':
Duration: 00:03:17.53, start: 95444.217689, bitrate: 3602 kb/s
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 720x480 [SAR 1:1
DAR 3:2], 3600 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
At least one output file must be specified
$ ffmpeg -i video.mpg -r 2 -s 640x480 'output/frame_%06d.jpg'
ffmpeg version n4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8.2.1 (GCC) 20181127
configuration: --prefix=/usr --disable-debug --disable-static
--disable-stripping --enable-fontconfig --enable-gmp --enable-gnutls
--enable-gpl --enable-ladspa --enable-libaom --enable-libass
--enable-libbluray --enable-libdrm --enable-libfreetype --enable-libfribidi
--enable-libgsm --enable-libiec61883 --enable-libjack --enable-libmodplug
--enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb
--enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libsoxr
--enable-libspeex --enable-libssh --enable-libtheora --enable-libv4l2
--enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp
--enable-libx264 --enable-libx265 --enable-libxcb --enable-libxml2
--enable-libxvid --enable-nvdec --enable-nvenc --enable-omx --enable-shared
--enable-version3
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
[mpeg2video @ 0x564a0be99c80] Invalid frame dimensions 0x0.
Last message repeated 4 times
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 7 with DTS
62915937, packet 8 with DTS 8589979592
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 22 with DTS
62960937, packet 23 with DTS 8590024592
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 37 with DTS
63005937, packet 38 with DTS 8590069592
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 52 with DTS
63050936, packet 53 with DTS 8590114591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 67 with DTS
63095936, packet 68 with DTS 8590159591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 82 with DTS
63140936, packet 83 with DTS 8590204591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 97 with DTS
63185936, packet 98 with DTS 8590249591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 112 with DTS
63230936, packet 113 with DTS 8590294591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 127 with DTS
63275936, packet 128 with DTS 8590339591
[mpeg @ 0x564a0be97d80] DTS discontinuity in stream 0: packet 142 with DTS
63320936, packet 143 with DTS 8590384591
Input #0, mpeg, from 'video.mpg':
Duration: 00:03:17.53, start: 95444.217689, bitrate: 3602 kb/s
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 720x480 [SAR 1:1
DAR 3:2], 3600 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc
Stream mapping:
Stream #0:0 -> #0:0 (mpeg1video (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0x564a0c06d640] deprecated pixel format used, make sure you did
set range correctly
Output #0, image2, to 'output/frame_%06d.jpg':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: mjpeg, yuvj420p(pc), 640x480 [SAR 9:8 DAR 3:2],
q=2-31, 200 kb/s, 2 fps, 2 tbn, 2 tbc
Metadata:
encoder : Lavc58.35.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
frame= 1 fps=0.0 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=513 speed=1.89e+05x
frame= 1 fps=1.0 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=1017 speed=9.46e+04x
frame= 1 fps=0.7 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=1521 speed=6.31e+04x
frame= 1 fps=0.5 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=2022 speed=4.73e+04x
frame= 1 fps=0.4 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=2523 speed=3.79e+04x
frame= 1 fps=0.3 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=3020 speed=3.16e+04x
frame= 1 fps=0.3 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=3528 speed=2.7e+04x
frame= 1 fps=0.2 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=4032 speed=2.37e+04x
frame= 1 fps=0.2 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=4525 speed=2.1e+04x
frame= 1 fps=0.2 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=5029 speed=1.89e+04x
frame= 1 fps=0.2 q=1.6 size=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=5528 speed=1.72e+04x
frame= 1 fps=0.2 q=1.6 Lsize=N/A time=26:19:06.00 bitrate=N/A dup=0
drop=5937 speed=1.6e+04x
video:29kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
$ ls output/
frame_000001.jpg
I'm really not super familiar with video transcoding or codecs at all, so
I'm not sure where to go from here when troubleshooting this - let me know
if this isn't something that's appropriate for this mailing list, and I'm
happy to take it elsewhere - I may also be looking into hiring consulting
services per https://ffmpeg.org/consulting.html
Thanks,
Griffin
--
Griffin Smith
Senior Software Engineer
-
Urbint <https://urbint.com/>
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