Selur's Little Message Board
Muxing interlaced video - Printable Version

+- Selur's Little Message Board (https://forum.selur.net)
+-- Forum: Hybrid - Support (https://forum.selur.net/forum-1.html)
+--- Forum: Problems & Questions (https://forum.selur.net/forum-3.html)
+--- Thread: Muxing interlaced video (/thread-1166.html)

Pages: 1 2 3 4

Muxing interlaced video - kingcrimsonster - 22.09.2019

1.I am muxing the source file into the transport stream. As a muxer, I chose ffmpeg, since the ts-muxer introduces A-V resync. The output is a small inappropriate source file.
2. I am muxing the source file in to MKV.
In the tab "Muxing" - "Adjsut to stream frame rate" check or uncheck this box - no difference.
Source file options:
Format : MPEG Video
Frame rate : 25.000 FPS
Standard : PAL

Output File Options:
Frame rate mode : Variable
Frame rate : 50.000 FPS
Original frame rate : 25.000 FPS

If I mux the source file using mkvtoolnix - Output file options:
Frame rate mode : Constant
Frame rate : 25.000 FPS
Standard : PAL

Source file

RE: Muxing interlaced video - Selur - 22.09.2019

Quote:Source file options:
Format : MPEG Video
Frame rate : 25.000 FPS
Standard : PAL

Output File Options:
Frame rate mode : Variable
Frame rate : 50.000 FPS
Original frame rate : 25.000 FPS
Where do these values come from?

When looking at the source file I get:
Video
Count                                    : 378
Count of stream of this kind             : 1
Kind of stream                           : Video
Kind of stream                           : Video
Stream identifier                        : 0
StreamOrder                              : 0
FirstPacketOrder                         : 0
ID                                       : 224
ID                                       : 224 (0xE0)
Format                                   : MPEG Video
Format                                   : MPEG Video
Commercial name                          : MPEG-2 Video
Format version                           : Version 2
Format profile                           : Main@Main
Format settings                          : CustomMatrix / BVOP
Format settings, BVOP                    : Yes
Format settings, BVOP                    : Yes
Format settings, Matrix                  : Custom
Format settings, Matrix                  : Custom
Format_Settings_Matrix_Data              : 10111112121213131313141414141415151515151516161616161616171717171717171718181818181818191A191A1A191B1B1B1A1B1C1C1C1C1E1E1E1F1F21
Format settings, GOP                     : M=3, N=15
Format settings, picture structure       : Frame
Internet media type                      : video/MPV
Duration                                 : 178600
Duration                                 : 2 min 58 s
Duration                                 : 2 min 58 s 600 ms
Duration                                 : 2 min 58 s
Duration                                 : 00:02:58.600
Duration                                 : 00:02:58:15
Duration                                 : 00:02:58.600 (00:02:58:15)
Bit rate mode                            : VBR
Bit rate mode                            : Variable
Bit rate                                 : 9000000
Bit rate                                 : 9 000 kb/s
Width                                    : 720
Width                                    : 720 pixels
Height                                   : 576
Height                                   : 576 pixels
Sampled_Width                            : 720
Sampled_Height                           : 576
Pixel aspect ratio                       : 1.067
Display aspect ratio                     : 1.333
Display aspect ratio                     : 4:3
Frame rate                               : 25.000
Frame rate                               : 25.000 FPS
Frame count                              : 4465
Standard                                 : PAL
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Chroma subsampling                       : 4:2:0
Bit depth                                : 8
Bit depth                                : 8 bits
Scan type                                : Interlaced
Scan type                                : Interlaced
Scan order                               : BFF
Scan order                               : Bottom Field First
Compression mode                         : Lossy
Compression mode                         : Lossy
Bits/(Pixel*Frame)                       : 0.868
Delay                                    : 247.811111
Delay                                    : 248 ms
Delay                                    : 248 ms
Delay                                    : 248 ms
Delay                                    : 00:00:00.248
Delay_DropFrame                          : No
Delay, origin                            : Container
Delay, origin                            : Container
Delay_Original                           : 0
Delay_Original                           : 00:00:00.000
Delay_Original_Settings                  : drop_frame_flag=0 / closed_gop=1 / broken_link=0
Delay_Original_DropFrame                 : No
Delay_Original_Source                    : Stream
Time code of first frame                 : 00:00:00:00
Time code source                         : Group of pictures header
GOP, Open/Closed                         : Open
GOP, Open/Closed                         : Open
GOP, Open/Closed of first frame          : Closed
GOP, Open/Closed of first frame          : Closed
Stream size                              : 201127997
Stream size                              : 192 MiB (96%)
Stream size                              : 192 MiB
Stream size                              : 192 MiB
Stream size                              : 192 MiB
Stream size                              : 191.8 MiB
Stream size                              : 192 MiB (96%)
Proportion of this stream                : 0.95628
Buffer size                              : 229376
intra_dc_precision                       : 9
for the video no indication of VFR.

Cu Selur

RE: Muxing interlaced video - kingcrimsonster - 22.09.2019

(22.09.2019, 21:30)Selur Wrote:
Quote:Source file options:
Format : MPEG Video
Frame rate : 25.000 FPS
Standard : PAL

Output File Options:
Frame rate mode : Variable
Frame rate : 50.000 FPS
Original frame rate : 25.000 FPS
Where do these values come from?

for the video no indication of VFR.

Cu Selur

the sorce file has a constant frame rate. It's right.
When I mux this file in the *.mkv with Mkvtoolnix output file has a constant frame rate. It's right.
When I mux this file in the *.mkv with Hybrid output file indicated as vfr. It's wrong!

RE: Muxing interlaced video - Selur - 22.09.2019

Ah, I see problem is probably with the mkvmerge muxing call.
-> I'll look into it.

Cu Selur

RE: Muxing interlaced video - kingcrimsonster - 22.09.2019

Selur, please fix besides this problem, the problem of mux in the transport stream with FFmpeg.

RE: Muxing interlaced video - Selur - 22.09.2019

Problem with the ffmpeg muxing
ffmpeg -y -r 25 -i "E:\Output\21_56_32_1910_02.m2v" -i "E:\Output\iId_1_aid_0_21_56_32_1910_01.wav" -vcodec copy -acodec copy -map 0:0 -map 1:0 -metadata encoding_tool="Hybrid 2019.09.21.1"  -aspect 133375:100000 -r 25 -fflags +genpts -f mpegts -muxrate 100000000 "E:\Output\Adriana Russo - Capriccio ( Discoring 81).ts"
is that ffmpeg aborts with:
Quote:[mpegts @ 0000021f25038200] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mpegts @ 0000021f25038200] first pts value must be set
av_interleaved_write_frame(): Invalid data found when processing input
No real clue why this happens and how to fix it.
The extracted audio&video stream seem to be okay.

Adding '-fflags +genpts' does seem to fix something since the muxing doesn't crash, but the output audio isn't muxed properly now. :/

Cu Selur

RE: Muxing interlaced video - kingcrimsonster - 22.09.2019

Selur, please fix the A-V resync when muxing to the transport stream using TS-muxer.
This source file without resync. When I mux it with Hybrid (using TS-muxer) in the output *.ts file beginning with 01:10 it has a A-V resync.

RE: Muxing interlaced video - Selur - 22.09.2019

About muxing pcm audio with ffmpeg into a transport stream is not supported by ffmpeg.
(tsMuxeR converts the audio to LPCM which ffmpeg doesn't support afaik.)

Looking into the second file and tsMuxer remuxing.

RE: Muxing interlaced video - Selur - 23.09.2019

I suspect that the stream is stretched, but the mkv stretch detection is broken atm. looking into it.
This will take a while,...
(may be tomorrow in case I find the time)

Cu Selur

RE: Muxing interlaced video - kingcrimsonster - 23.09.2019

(22.09.2019, 23:40)Selur Wrote: About muxing pcm audio with ffmpeg into a transport stream is not supported by ffmpeg.
(tsMuxeR converts the audio to LPCM which ffmpeg doesn't support afaik.)

Looking into the second file and tsMuxer remuxing.

Quote from here

Quote: Though PCM is a more general term, it is often used to describe data encoded as LPCM.
ts-muxer is not able to convert or change any parameter of audio or video.
Selur, try opening "Il Silenzio (Melissa Venema) [Live in Maastricht II] (N).mkv" in TS-muxer.
You will see in the "tracks" window in the column "codec" "LPCM" in the properties of the audio track