Encode 50p clip

[kartola]

Hi,
i edited my video (90 minutes) with premiere, the video is 1080 50p (panasonic tm700).
Now i would encode the video in a file (mkv), i use x264 to do that.
I would try to do a bluray compatibile file so when i will buy a BD recorder, i can put on a disk.
The result is a file 50 fps:

ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 4 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 8s 540ms
Bit rate mode                            : Variable
Bit rate                                 : 9 270 Kbps
Maximum bit rate                         : 62.5 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 50.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : MBAFF
Bits/(Pixel*Frame)                       : 0.089
Stream size                              : 9.44 MiB (100%)
Title                                    : Sequence palloncino 50p
Writing library                          : x264 core 120 r2120 0c7dab9
Encoding settings                        : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=tff / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=0 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=0 / keyint=500 / keyint_min=50 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=62500 / vbv_bufsize=62500 / crf_max=0.0 / nal_hrd=vbr / ip_ratio=1.40 / aq=1:1.00
Encoded date                             : UTC 2012-11-26 17:30:28
Tagged date                              : UTC 2012-11-26 17:30:28

This file (MBAFF 50 fps) is bluray compatible? Should i deinterlace the video?
Is this file better than a deinterlaced (50i) video?

Thanks

[poisondeathray]

This file (MBAFF 50 fps) is bluray compatible? Should i deinterlace the video?
Is this file better than a deinterlaced (50i) video?

50p is "better", but not compatible with blu-ray . You would have to convert it to 50i (create interlacing). (it's also called "25i", just different naming conventions, but what it means is 25 frames per second or 50 fields per second).

MBAFF is compatible (it's a type of interlaced encoding) with blu-ray

Also, your encode settings are not compatible for blu-ray . You need 4 slices, blu-ray compat, legal vbv values, legal max keyframe interval values
https://sites.google.com/site/x264bluray/home/1080i
http://forum.doom9.org/showthread.php?t=154533

[kartola]

This file (MBAFF 50 fps) is bluray compatible? Should i deinterlace the video?
Is this file better than a deinterlaced (50i) video?

50p is "better", but not compatible with blu-ray . You would have to convert it to 50i (create interlacing). (it's also called "25i", just different naming conventions, but what it means is 25 frames per second or 50 fields per second).

MBAFF is compatible (it's a type of interlaced encoding) with blu-ray

Also, your encode settings are not compatible for blu-ray . You need 4 slices, blu-ray compat, legal vbv values, legal max keyframe interval values
https://sites.google.com/site/x264bluray/home/1080i
http://forum.doom9.org/showthread.php?t=154533

Sorry! i recheck che file, this is the correct one:

General
Complete name                            : F:\Sequence palloncino br vs.mp4
Format                                   : MPEG-4
Format profile                           : Base Media
Codec ID                                 : isom
File size                                : 10.1 MiB
Duration                                 : 8s 540ms
Overall bit rate mode                    : Variable
Overall bit rate                         : 9 886 Kbps
Encoded date                             : UTC 2012-11-26 17:38:05
Tagged date                              : UTC 2012-11-26 17:38:05

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : High@L4.1
Format settings, CABAC                   : Yes
Format settings, ReFrames                : 3 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 8s 540ms
Bit rate mode                            : Variable
Bit rate                                 : 9 880 Kbps
Maximum bit rate                         : 40.0 Mbps
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 50.000 fps
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : MBAFF
Bits/(Pixel*Frame)                       : 0.095
Stream size                              : 10.1 MiB (100%)
Title                                    : Sequence palloncino br vs
Writing library                          : x264 core 120 r2120 0c7dab9
Encoding settings                        : cabac=1 / ref=4 / deblock=1:-1:-1 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.15 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-3 / threads=12 / sliced_threads=0 / slices=4 / nr=0 / decimate=1 / interlaced=tff / bluray_compat=1 / constrained_intra=0 / bframes=3 / b_pyramid=1 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=1 / weightp=0 / keyint=25 / keyint_min=13 / scenecut=40 / intra_refresh=0 / rc_lookahead=37 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=40000 / vbv_bufsize=30000 / crf_max=0.0 / nal_hrd=vbr / ip_ratio=1.40 / aq=1:1.00
Encoded date                             : UTC 2012-11-26 17:38:05
Tagged date                              : UTC 2012-11-26 17:38:05

So x264 autmatically interlaced the video.

Someone can suggest me a string to mantain the quality at best, with bluray compatibility?
And even one string to make a 50p video mkv?

[_Al_]

if you don't want to use command line you can use Megui:

-file format choose RAWAVC
-"target playback device" Blu-Ray
-in "frame type" TAB choose maximum GOP size 25 and interlace mode choose tff (for 25i video) or none (for 25p) but in this case you have to also check in "Analysis" TAB fake interlace
-in "Misc" TAB choose Force SAR 1:1 (of course you have to encode 1920x1080) and BT709 for Color Primaries,Transfer and Color Matrix

audio has to be BD compatible too, AC3 less than 640kbps, 48000Hz, 16 or 24bit

load AC3 and RAWAVC into TsMuxer and mux BDMV

[_Al_]

for 50p you have to downsize to 720p1280

[kartola]

What kind of quality i'm obtaining with those parameters in megui?
I think i prefer to use ripbot, because i can try to distribute the encoding in more pcs.
If i use a 20 of quality factor i need more than 12 hours of encoding...

[_Al_]

I did not mentioned settings for quality or bitrate because everybody can prefer something different, I'd set Constant quality with CRF 16 or 18 or so, other has to get video to certain size so uses automated 2pass with certain average.

For sure I'd leave preset settings to medium which sets reference frames to 3 or so, settings like slow, slower etc. increase number of reference frames. Or it has to be decreased in settings then, but I'm not sure if that would make sense.

Megui can generate RAW avc video. As soon as you put video into mp4 container I'm not sure how reliable it is to author BD standard out of it if you use TsMuxer then. I did not see that Ripbot264 can generate RAW H.264 video file.

[jagabo]

For sure I'd leave preset settings to medium which sets reference frames to 3 or so, settings like slow, slower etc. increase number of reference frames. Or it has to be decreased in settings then, but I'm not sure if that would make sense.

x264 presets:

ultrafast: cabac=0 / ref=1  / deblock=0:0:0 / analyse=0:0       / me=dia  / subme=0  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0  / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0                                                                           / weightp=0 / keyint=250 / keyint_min=23 / scenecut=0  / intra_refresh=0                   / rc=crf / mbtree=0 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=0
superfast: cabac=1 / ref=1  / deblock=1:0:0 / analyse=0x3:0x3   / me=dia  / subme=1  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0  / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0                   / rc=crf / mbtree=0 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30 / aq=1:1.00
veryfast:  cabac=1 / ref=1  / deblock=1:0:0 / analyse=0x3:0x113 / me=hex  / subme=2  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=0 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0  / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
faster:    cabac=1 / ref=2  / deblock=1:0:0 / analyse=0x3:0x113 / me=hex  / subme=4  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0  / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=20 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
fast:      cabac=1 / ref=2  / deblock=1:0:0 / analyse=0x3:0x113 / me=hex  / subme=6  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=30 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
medium:    cabac=1 / ref=3  / deblock=1:0:0 / analyse=0x3:0x113 / me=hex  / subme=7  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
slow:      cabac=1 / ref=5  / deblock=1:0:0 / analyse=0x3:0x113 / me=umh  / subme=8  / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3  / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=50 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
veryslow:  cabac=1 / ref=16 / deblock=1:0:0 / analyse=0x3:0x133 / me=umh  / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=8  / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00
placebo:   cabac=1 / ref=16 / deblock=1:0:0 / analyse=0x3:0x133 / me=tesa / subme=11 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=0 / chroma_qp_offset=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=16 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=23 / scenecut=40 / intra_refresh=0 / rc_lookahead=60 / rc=crf / mbtree=1 / crf=16.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40                 / aq=1:1.00

They change from time to time so that last may not be completely up to date. Also, note that CRF=16 isn't a preset, it's what was set during encoding the test files from which those settings were taken.

So changing from medium to slow with ref=3 will still benefit from better me and subme settings.

[_Al_]

ok,
i just did some quick tests it seems to work in more complex way, not sure exactly how, but, --bluray-compat or something else, not sure what, maybe --keyint 25 gives different results

basicaly I compared this (BD settings for 25i) which gave me 4 reference frames:

x264 --crf=18 --preset placebo --bluray-compat --vbv-maxrate 30000 --vbv-bufsize 30000 --level 4.1 --keyint 25 --open-gop --tff --slices 4 --colorprim "bt709" --transfer "bt709" --colormatrix "bt709" --sar 1:1 --output out.264 input.avs

and this, it gave me output with 16 reference frames:

x264 --crf=18 --preset placebo  --tff --output out.264 input.avs

I checked different presets from medium to placebo and I got for that upper command line (BD compliant H.264):

3 reference frames for --preset medium and 4 for the rest (slow, slower, very slow, placebo).

I got the same with Megui (setting BD compliant H.264 as I explained above) and I got the same 3 ref frames for medium and 4 reference frames for the rest, even if settings for those stated otherwise , so I was wrong and as for those BD compliant settings we can knock yourselves out and set preset very slow and still get 4 reference frames instead of 6 or higher ... ? It seems so.

[jagabo]

Yes, by forcing blu-ray compatibility you limit reference frames to 4. The settings I gave were the baseline for each preset.

[kartola]

The preset change the compression, so the file dimension.
Using the same quality (same CRF) the resoult would be the same (more or less).
Forcing the bluray compatibility some parameters are locked so there is less difference between the presets.
I have to find the right CRF...