Details of Nache1080.mp4:-
resolution=1920x1080
fps=60
Avg Video Bit Rate=11610 kbps
duration=00:00:14
size=19.6 MB
I produced mpeg2 video from this mp4 video using below command:
ffmpeg -i Nache1080.mp4 -c:v mpeg2video -s 720x576 -r 25 -b:v 20000k Nache_dvd_20000.mpg
Details of produced mpeg2 video namely Nache_dvd_20000.mpg:-
min Video Bit Rate=3298 kbps
max Video Bit Rate=5954 kbps
avg Video Bit Rate=4675 kbps
size=8.533 mb
The max video bit rate for DVD-Video is 9.8 MB. The max video bit rate of produced mpeg2 video is 5954 kbps. But I specified 20000k as input for video bit rate which is greater than 9.8 MB.
1. Will DVD-player be able to play this video? What problems -b:v 20000k will create for DVD-Player?
2. Will PAL-TV be able to display this video? What problems -b:v 20000k will create for PAL-TV?
The above command produced below warning on FFMPEG console:
[mpeg @ 0000000000604c80] VBV buffer size not set, using default size of 230KB 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
3. Will this warning cause any problems for DVD-Player and/or PAL-TV?
If I add -target pal-dvd to remove the warning FFMPEG generates below error and produces a mpeg2(or output) video having 0 bytes:
F:ffmpeg-4.2-win64-static\bin>ffmpeg -i Nache1080.mp4 -c:v mpeg2video -s 720x576 -r 25 -b:v 20000k -target pal-dvd Nache_dvd_20000.mpg
ffmpeg version 4.2 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9.1.1 (GCC) 20190807
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype - -enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --en able-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-l ibvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid -- enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Nache1080.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.56.100
Duration: 00:00:14.03, start: 0.000000, bitrate: 11767 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 11623 kb/s, 60.07 fps, 60 tbr, 15360 tbn, 120 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 171 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mpeg2video (native))
Stream #0:1 -> #0:1 (aac (native) -> ac3 (native))
Press [q] to stop, [?] for help
[mpeg2video @ 0000000002f500c0] bitrate above max bitrate Error initializing output stream 0:0 --
Error while opening encoder for output stream
0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
Conversion failed!
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