> On Feb 12, 2014, at 4:43 AM, Carl Eugen Hoyos <[email protected]> wrote:
>
> Jim Shupert <jshupert <at> pps-inc.com> writes:
>
>> input a unCompressed yuv avi and get a second
>> Uncompressed yuv avi or mov and it would be
>> 'broadcast safe'.
>
> Rereading your original post:
> Could you provide an uncompressed yuv avi that
> needs the filter you have in mind?
> (One frame is probably enough.)
Responding late, as I find myself in need of this filter as well.
A sample that needs the filter can be generated via:
ffmpeg -f lavfi -i color=gray:s=256x256 -vf
format=yuv444p,geq=lum=X,scale=out_range=tv -vframes 1 -pix_fmt yuv444p -c:v
rawvideo -y needsbroadcastsafe.nut
ffmpeg version 2.8.4 Copyright (c) 2000-2015 the FFmpeg developers
built with Apple LLVM version 7.0.2 (clang-700.1.81)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.8.4 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables
--enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-opencl
--enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid
--enable-libfreetype --enable-libfaac --enable-libass --enable-ffplay
--enable-libopenjpeg --disable-decoder=jpeg2000
--extra-cflags=-I/usr/local/Cellar/openjpeg/1.5.2_1/include/openjpeg-1.5
--enable-nonfree --enable-vda
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, lavfi, from 'color=gray:s=256x256':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 256x256 [SAR 1:1
DAR 1:1], 25 tbr, 25 tbn, 25 tbc
Output #0, nut, to 'needsbroadcastsafe.nut':
Metadata:
encoder : Lavf56.40.101
Stream #0:0: Video: rawvideo (444P / 0x50343434), yuv444p, 256x256 [SAR 1:1
DAR 1:1], q=2-31, 200 kb/s, 25 fps, 51200 tbn, 25 tbc
Metadata:
encoder : Lavc56.60.100 rawvideo
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> rawvideo (native))
Press [q] to stop, [?] for help
frame= 1 fps=0.0 q=-0.0 Lsize= 192kB time=00:00:00.04
bitrate=39382.2kbits/s
video:192kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 0.154114%
The result of `ffmpeg -i needsbroadcastsafe.nut -vf broadcastsafe
nowbroadcastsafe.nut` would result in the output containing luma values only
between 16-235 inclusively (8 bit) and 16-240 for chroma planes.
Dave Rice
_______________________________________________
ffmpeg-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/ffmpeg-user
