On Sat, 5 Nov 2016, Carl Eugen Hoyos wrote:
2016-11-05 1:23 GMT+01:00 Hans Carlson <forb...@gmx.com>:
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
What do I need to do to avoid this message?
Use -target dvd or -target vcd, depending on what you are trying to
create.
If I use -target ntsc-dvd BEFORE -codec copy, then it doesn't make any
difference, I still get the VBV buffer size warning.
If I use -target ntsc-dvd AFTER -codec copy, then it doesn't copy, it
reencodes. I don't want to reencode, I want to COPY.
$ ffmpeg -i TEST.mpg -target ntsc-dvd -codec copy -f vob
TEST-COPY-latest-target-before.mpg
ffmpeg version N-82228-gfb240a6 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.5.1 (GCC) 20100924 (Red Hat 4.5.1-4)
configuration: --enable-gpl --enable-version3 --enable-nonfree
--disable-static --enable-shared --disable-debug --enable-libass
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus
--enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
--enable-x11grab --disable-ffplay --disable-ffserver
libavutil 55. 35.100 / 55. 35.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mpeg, from 'TEST.mpg':
Duration: 00:00:09.88, start: 0.540000, bitrate: 49 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, progressive),
320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
[vob @ 0x8f8b2c0] 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, vob, to 'TEST-COPY-latest-target-before.mpg':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: mpeg2video (Main), yuv420p(tv, progressive), 320x240
[SAR 1:1 DAR 4:3], q=2-31, 6000 kb/s, 25 fps, 25 tbr, 90k tbn, 29.97 tbc
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Press [q] to stop, [?] for help
[vob @ 0x8f8b2c0] 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
frame= 250 fps=0.0 q=-1.0 Lsize= 60kB time=00:00:09.92 bitrate=
49.5kbits/s speed=2.04e+03x
video:58kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 4.049180%
$ ffmpeg -i TEST.mpg -codec copy -target ntsc-dvd -f vob
TEST-COPY-latest-target-after.mpg
ffmpeg version N-82228-gfb240a6 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.5.1 (GCC) 20100924 (Red Hat 4.5.1-4)
configuration: --enable-gpl --enable-version3 --enable-nonfree
--disable-static --enable-shared --disable-debug --enable-libass
--enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus
--enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264
--enable-x11grab --disable-ffplay --disable-ffserver
libavutil 55. 35.100 / 55. 35.100
libavcodec 57. 66.101 / 57. 66.101
libavformat 57. 57.100 / 57. 57.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 66.100 / 6. 66.100
libswscale 4. 3.100 / 4. 3.100
libswresample 2. 4.100 / 2. 4.100
libpostproc 54. 2.100 / 54. 2.100
Input #0, mpeg, from 'TEST.mpg':
Duration: 00:00:09.88, start: 0.540000, bitrate: 49 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, progressive),
320x240 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 90k tbn, 50 tbc
Output #0, vob, to 'TEST-COPY-latest-target-after.mpg':
Metadata:
encoder : Lavf57.57.100
Stream #0:0: Video: mpeg2video (Main), yuv420p, 720x480 [SAR 8:9 DAR 4:3],
q=2-31, 6000 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
Metadata:
encoder : Lavc57.66.101 mpeg2video
Side data:
cpb: bitrate max/min/avg: 9000000/0/6000000 buffer size: 1835008
vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video (native) -> mpeg2video (native))
Press [q] to stop, [?] for help
frame= 300 fps=141 q=2.0 Lsize= 172kB time=00:00:09.94 bitrate=
141.7kbits/s dup=50 drop=0 speed=4.66x
video:169kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 1.759272%
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