Paul B Mahol wrote:
On 8/10/15, Andy Furniss <[email protected]> wrote:
Carl Eugen Hoyos wrote:
Please understand that there is a difference between interlaced
content and interlaced encoding. There is no interlaced encoding with
FFv1 because it appears not to save any bytes in the output file and
if you have interlaced content it will be still be interlaced.
But judging by one quick test I just did, you will loose the field order
information and the frames are marked as progressive.
Tested with mkv and nut with ffprobe -show_frames.
Input is y4m ffprobe shows -
interlaced_frame=1
top_field_first=1
both are 0 on resulting files.
That is for older version, latest version keep interlaced flags.
I think I am up to date - direct paste (ffm and ffpr are bash aliases I
use to run from git tree)
ph4[576i25]$ ffm -i parkrun-576i25-420-704.y4m -c:v ffv1 out-ffv1.mkv
ffmpeg version N-74340-ge66a43f Copyright (c) 2000-2015 the FFmpeg
developers
built with gcc 4.9.2 (GCC)
configuration: --prefix=/usr --disable-doc --enable-gpl
--enable-nonfree --enable-opencl --enable-libvpx
--enable-libschroedinger --enable-libx265 --enable-libdcadec
--enable-libfdk-aac --enable-libmp3lame --enable-libx264 --enable-x11grab
libavutil 54. 30.100 / 54. 30.100
libavcodec 56. 57.100 / 56. 57.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 32.100 / 5. 32.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, yuv4mpegpipe, from 'parkrun-576i25-420-704.y4m':
Duration: 00:00:10.08, start: 0.000000, bitrate: 121652 kb/s
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 704x576,
SAR 16:11 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc
File 'out-ffv1.mkv' already exists. Overwrite ? [y/N] y
Output #0, matroska, to 'out-ffv1.mkv':
Metadata:
encoder : Lavf56.40.101
Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv420p, 704x576 [SAR
16:11 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc56.57.100 ffv1
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> ffv1 (native))
Press [q] to stop, [?] for help
frame= 252 fps= 50 q=-0.0 Lsize= 91607kB time=00:00:10.08
bitrate=74449.2kbits/s
video:91604kB audio:0kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.003707%
ph4[576i25]$ ffpr -show_frames out-ffv1.mkv | head -n 30
ffprobe version N-74340-ge66a43f Copyright (c) 2007-2015 the FFmpeg
developers
built with gcc 4.9.2 (GCC)
configuration: --prefix=/usr --disable-doc --enable-gpl
--enable-nonfree --enable-opencl --enable-libvpx
--enable-libschroedinger --enable-libx265 --enable-libdcadec
--enable-libfdk-aac --enable-libmp3lame --enable-libx264 --enable-x11grab
libavutil 54. 30.100 / 54. 30.100
libavcodec 56. 57.100 / 56. 57.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 32.100 / 5. 32.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, matroska,webm, from 'out-ffv1.mkv':
Metadata:
ENCODER : Lavf56.40.101
Duration: 00:00:10.08, start: 0.000000, bitrate: 74449 kb/s
Stream #0:0: Video: ffv1 (FFV1 / 0x31564646), yuv420p, 704x576, SAR
16:11 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
Metadata:
ENCODER : Lavc56.57.100 ffv1
DURATION : 00:00:10.080000000
[FRAME]
media_type=video
stream_index=0
key_frame=1
pkt_pts=0
pkt_pts_time=0.000000
pkt_dts=0
pkt_dts_time=0.000000
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
pkt_duration=40
pkt_duration_time=0.040000
pkt_pos=719
pkt_size=164299
width=704
height=576
pix_fmt=yuv420p
sample_aspect_ratio=16:11
pict_type=I
coded_picture_number=0
display_picture_number=0
interlaced_frame=0
top_field_first=0
repeat_pict=0
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=0
pkt_pts=40
ph4[576i25]$
ph4[576i25]$
ph4[576i25]$ ffpr -show_frames parkrun-576i25-420-704.y4m | head -n 30
ffprobe version N-74340-ge66a43f Copyright (c) 2007-2015 the FFmpeg
developers
built with gcc 4.9.2 (GCC)
configuration: --prefix=/usr --disable-doc --enable-gpl
--enable-nonfree --enable-opencl --enable-libvpx
--enable-libschroedinger --enable-libx265 --enable-libdcadec
--enable-libfdk-aac --enable-libmp3lame --enable-libx264 --enable-x11grab
libavutil 54. 30.100 / 54. 30.100
libavcodec 56. 57.100 / 56. 57.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 32.100 / 5. 32.100
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, yuv4mpegpipe, from 'parkrun-576i25-420-704.y4m':
Duration: 00:00:10.08, start: 0.000000, bitrate: 121652 kb/s
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 704x576,
SAR 16:11 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc
[FRAME]
media_type=video
stream_index=0
key_frame=1
pkt_pts=0
pkt_pts_time=0.000000
pkt_dts=0
pkt_dts_time=0.000000
best_effort_timestamp=0
best_effort_timestamp_time=0.000000
pkt_duration=1
pkt_duration_time=0.040000
pkt_pos=66
pkt_size=608256
width=704
height=576
pix_fmt=yuv420p
sample_aspect_ratio=16:11
pict_type=I
coded_picture_number=0
display_picture_number=0
interlaced_frame=1
top_field_first=1
repeat_pict=0
[/FRAME]
[FRAME]
media_type=video
stream_index=0
key_frame=1
pkt_pts=1
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