The idea was to show the problem in a more simple context.
This will show the problem using buildin smptehdbar in a 50P to 50i xdcamhd422
encoding
both will default to xd5e examined using dumpster or Quicktime7 on OSX 10.10.5.
TEST1 with -tag:v xd5c
./ffmpeg -f lavfi -i smptehdbars=duration=10:size=1920x1080:r=50 -vf
format=pix_fmts=yuv422p,tinterlace=4:vlpf -map 0:v -c:v mpeg2video -flags
+ildct+ilme -top 1 -dc 10 -q:v 1 -qmin 1 -bf 2 -rc_max_vbv_use 1
-rc_min_vbv_use 1 -g 12 -b:v 50000k -minrate 50000k -maxrate 50000k -bufsize
17825792 -tag:v xd5c -an ~/Desktop/TEST_SRC.MOV
ffmpeg version N-79717-gdeaf58a Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 7.0.2 (clang-700.1.81)
configuration: --disable-sdl --enable-gpl --enable-nonfree --enable-static
libavutil 55. 23.100 / 55. 23.100
libavcodec 57. 38.100 / 57. 38.100
libavformat 57. 35.100 / 57. 35.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 44.100 / 6. 44.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, lavfi, from 'smptehdbars=duration=10:size=1920x1080:r=50':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080 [SAR
1:1 DAR 16:9], 50 fps, 50 tbr, 50 tbn
File '/Users/macbook/Desktop/TEST_SRC.MOV' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv422p for MPEG-2 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[mov @ 0x7fc93a00fa00] Using AVStream.codec to pass codec parameters to muxers
is deprecated, use AVStream.codecpar instead.
Output #0, mov, to '/Users/macbook/Desktop/TEST_SRC.MOV':
Metadata:
encoder : Lavf57.35.100
Stream #0:0: Video: mpeg2video (4:2:2) (xd5c / 0x63356478), yuv422p,
1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 50000 kb/s, 25 fps, 12800 tbn
Metadata:
encoder : Lavc57.38.100 mpeg2video
Side data:
cpb: bitrate max/min/avg: 50000000/50000000/50000000 buffer size:
17825792 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
Press [q] to stop, [?] for help
frame= 250 fps= 17 q=1.0 Lsize= 60495kB time=00:00:09.92
bitrate=49956.4kbits/s speed=0.676x
video:60491kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.005570%
TEST2 -tag:v not set
macbook:ffmpeg-git macbook$ ./ffmpeg -f lavfi -i
smptehdbars=duration=10:size=1920x1080:r=50 -vf
format=pix_fmts=yuv422p,tinterlace=4:vlpf -map 0:v -c:v mpeg2video -flags
+ildct+ilme -top 1 -dc 10 -q:v 1 -qmin 1 -bf 2 -rc_max_vbv_use 1
-rc_min_vbv_use 1 -g 12 -b:v 50000k -minrate 50000k -maxrate 50000k -bufsize
17825792 -an ~/Desktop/TEST_SRC.MOV
ffmpeg version N-79717-gdeaf58a Copyright (c) 2000-2016 the FFmpeg developers
built with Apple LLVM version 7.0.2 (clang-700.1.81)
configuration: --disable-sdl --enable-gpl --enable-nonfree --enable-static
libavutil 55. 23.100 / 55. 23.100
libavcodec 57. 38.100 / 57. 38.100
libavformat 57. 35.100 / 57. 35.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 44.100 / 6. 44.100
libswscale 4. 1.100 / 4. 1.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Input #0, lavfi, from 'smptehdbars=duration=10:size=1920x1080:r=50':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080 [SAR
1:1 DAR 16:9], 50 fps, 50 tbr, 50 tbn
File '/Users/macbook/Desktop/TEST_SRC.MOV' already exists. Overwrite ? [y/N] y
No pixel format specified, yuv422p for MPEG-2 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[mov @ 0x7fbe29006000] Using AVStream.codec to pass codec parameters to muxers
is deprecated, use AVStream.codecpar instead.
Output #0, mov, to '/Users/macbook/Desktop/TEST_SRC.MOV':
Metadata:
encoder : Lavf57.35.100
Stream #0:0: Video: mpeg2video (4:2:2) (m2v1 / 0x3176326D), yuv422p,
1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 50000 kb/s, 25 fps, 12800 tbn
Metadata:
encoder : Lavc57.38.100 mpeg2video
Side data:
cpb: bitrate max/min/avg: 50000000/50000000/50000000 buffer size:
17825792 vbv_delay: -1
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg2video (native))
Press [q] to stop, [?] for help
frame= 250 fps= 17 q=1.0 Lsize= 60495kB time=00:00:09.92
bitrate=49956.4kbits/s speed=0.684x
video:60491kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.005570%
Both TEST1 and TEST2 have xd5e as fourcc.
>
> (Why do you provide output for another than your
> use case?)
> Prores is special, you have to specify the profile, see also
> the console output:
>
>> [prores <at> 0x7fa6ac824400] encoding with ProRes
>> standard (apcn) profile
>
> Use -profile 1 for lt.
>
> Please learn now what thread hijacking is and strictly
> avoid it!
>
> Carl Eugen
>
> _______________________________________________
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>
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