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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
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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
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(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!
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Ah, I see problem is probably with the mkvmerge muxing call.
-> I'll look into it.
Cu Selur
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Selur, please fix besides this problem, the problem of mux in the transport stream with FFmpeg.
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22.09.2019, 22:07
(This post was last modified: 22.09.2019, 22:18 by Selur.)
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
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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.
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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.
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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
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(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
