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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