On 09/18/2018 12:53 PM, Carl Eugen Hoyos wrote:
2018-09-18 18:50 GMT+02:00, JD <[email protected]>:
I have an mpeg2 file which I am trying to convert to a dvd iso.
I am using dvdauthor to do it.
dvdauthor says the file is not mpeg2 video compatible.
When I run ffprobe on the file, I get this
ffprobe /usr/tmp/title_3-09h31m23s.mpg
ffprobe version N-51556-ge278500 Copyright (c) 2007-2013 the FFmpeg
developers
built on Apr 4 2013 05:11:43 with gcc 4.6 (Debian 4.6.3-1)
configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32
--extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static'
--extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static'
--extra-libs='-lxml2 -lexpat -lfreetype' --enable-static
--disable-shared --disable-ffserver --disable-doc --enable-bzlib
--enable-zlib --enable-postproc --enable-runtime-cpudetect
--enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis
--enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype
--enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc
--enable-libvo-amrwbenc --enable-version3 --enable-libvpx
libavutil 52. 24.100 / 52. 24.100
libavcodec 55. 2.100 / 55. 2.100
libavformat 55. 1.100 / 55. 1.100
libavdevice 55. 0.100 / 55. 0.100
libavfilter 3. 49.100 / 3. 49.100
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[mpeg @ 0xab1d7c0] max_analyze_duration 5000000 reached at 5024000
microseconds
[mpeg @ 0xab1d7c0] Could not find codec parameters for stream 1 (Audio:
ac3, 0 channels): unspecified sample format
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
[NULL @ 0xab1e760] start time is not set in estimate_timings_from_pts
Input #0, mpeg, from '/usr/tmp/title_3-09h31m23s.mpg':
Duration: 02:10:42.11, start: 45337.301611, bitrate: 5391 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x480 [SAR
32:27 DAR 16:9], 29.97 fps, 59.92 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x20]: Audio: ac3, 0 channels
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
So, how do I convert this file to a DVD compatible mpeg2 file?
Please try the following:
$ ffmpeg -i title_3-09h31m23s.mpg -target ntsc-dvd -acodec copy out.mpg
If it does not work, you can try to remove "-acodec copy".
Note that all dvd players I have seen also play the resulting
mpg file if I simply put it on a dvd (without using dvdauthor).
You could also test with "-acodec copy -vcodec copy" to
maximize quality.
Carl Eugen
Hi Carl,
Thank you for the tip.
I am getting the following output from ffmpeg:
seems to indicate some problem with my mpg file!!!
Notice that output file has -V2 in it's name
to indicate that it is version 2.
ffmpeg -i /usr/tmp/title_3-09h31m23s.mpg -target ntsc-dvd -acodec copy
-vcodec copy /usr/tmp/title_3-09h31m23s-V2.mpg
ffmpeg version N-88150-gae100046ca-static
https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 6.4.0 (Debian 6.4.0-8) 20171010
configuration: --enable-gpl --enable-version3 --enable-static
--disable-debug --disable-ffplay --disable-indev=sndio
--disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r
--enable-gnutls --enable-gray --enable-libfribidi --enable-libass
--enable-libvmaf --enable-libfreetype --enable-libmp3lame
--enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libopenjpeg --enable-librubberband --enable-librtmp
--enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus
--enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc
--enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxvid --enable-libzimg
libavutil 56. 0.100 / 56. 0.100
libavcodec 58. 0.100 / 58. 0.100
libavformat 58. 0.100 / 58. 0.100
libavdevice 58. 0.100 / 58. 0.100
libavfilter 7. 0.100 / 7. 0.100
libswscale 5. 0.100 / 5. 0.100
libswresample 3. 0.100 / 3. 0.100
libpostproc 55. 0.100 / 55. 0.100
[mpeg @ 0x48a3e80] start time for stream 1 is not set in
estimate_timings_from_pts
[mpeg @ 0x48a3e80] Could not find codec parameters for stream 1 (Audio:
ac3, 0 channels): unspecified sample format
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Input #0, mpeg, from '/usr/tmp/title_3-09h31m23s.mpg':
Duration: 02:10:42.14, start: 45337.301611, bitrate: 5391 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv,
smpte170m, top first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions,
29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x20]: Audio: ac3, 0 channels
Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
[dvd @ 0x48ab2e0] VBV buffer size not set, using default size of 130KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
<<<<<< ??????
Output #0, dvd, to '/usr/tmp/title_3-09h31m23s-V2.mpg':
Metadata:
encoder : Lavf58.0.100
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, smpte170m, top
first), 720x480 [SAR 32:27 DAR 16:9], q=2-31, 6000 kb/s, 29.97 fps,
59.94 tbr, 90k tbn, 29.97 tbc
Stream #0:1: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:2 -> #0:1 (copy)
Press [q] to stop, [?] for help
[dvd @ 0x48ab2e0] Timestamps are unset in a packet for stream 0. This is
deprecated and will stop working in the future. Fix your code to set the
timestamps properly
[dvd @ 0x48ab2e0] Non-monotonous DTS in output stream 0:0; previous:
8882356, current: 8881224; changing to 8882357. This may result in
incorrect timestamps in the output file.
[dvd @ 0x48ab2e0] buffer underflow st=1 bufi=638 size=1792
frame=23976 fps=412 q=-1.0 size= 684302kB time=00:16:40.87
bitrate=5600.9kbits/s speed=17.2x
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