one video and subtitle play well in vlc and other players, but fast in tv

[jraju]

Hi,
A particular movie video with my embedded subtitles play fine in vlc and other media players . But the same embedded video , when playng with usb support samsung tv, it plays a quite a bit faster, without any user pressing the ff menu.
how and what is the fix for it
The embedded subtitles and audio sync well in vlc and other media players.
what should i look for a fix
Other videos play fine in both the medias.
any clule please

[Selur]

wild guess: video might be vfr and tv might not properly handle those properly,..
-> post the MediaInfo characteristics of the file that causes the problems

[jraju]

Hi, i enclose the media infor in text form.
It seems that the video does not have vfr, but please confirm it as i do not know much about it.
if vfr is there, what should i do to fix it.
This is the first video, that accepts the format , but plays fast.

[Selur]

The file is vfr:

Frame rate mode                          : Variable
Frame rate                               : 23.976 (24000/1001) FPS
Minimum frame rate                       : 23.976 FPS
Maximum frame rate                       : 1000 000.000 FPS

seeing those min&max values the file is probably not totally fine.

Since the file was created using VLC stream output, the first thing I would recommend is remux either to mp4 using MP4Box/FFmpeg or to mkv using mkvtoolnix.

Only way to get cfr if the content really is vfr would be to reencode it.
For the future: make sure to capture at a fixed frame rate.

Cu Selur

[jraju]

Hi, thanks for the useful tips.
but , are some videos are having vfr by default
or vlc played a role in it while i convert it.
Normallyl media downloads are not having and if i want to give subtitles , i use vlc to embed the srt files and i leave the vlc to convert and save with h 264 and mp3, even when the video is in h 264. i did not check the ffr or cfr in any of the settings. I just do it for all the videos, i would like to give sub titles.
Is that the video itself has vfr or it changed to vfr while vonverting with vlc.
Downloading the file is not with vlc media player and i only use vlc for conversion and play the video as it plays all formats.
please tell, if the video would normallyl contain variable frame rate.
How to make ffr in vlc plesse

[johns0]

Some videos are converted in vfr mode even though they have a constant framerate,what i do is set the the fps to 23.976 or 29.97 depending on the video and remux that setting with tsmuxer and if there's no error messages being sent then i put the file back through mkvmerge.

[jraju]

Hi, Johns, yes i got the point. i just converted the vfr video with handbrake , which is having a setting for cfr, not by default, to the same mp4 format.
i checked and tested and the tv [;aued ffine.
But , there is another problem,
while playing video, the audio just disconnects and vidoe plays with video and subtitles.
i have to go back to tv mode and then again go to the scene to play. It plays again and there is another disconnect of audio.
the audio is in mp3format and video in h264.
what should i check now.
is there a setting in vlc media player , to make a cfr in the video settings or we have to use alternative tooldsl
the mp3 is having 128 kbps speed
please give me the solution to this annoying problem
+

[gdgsdg123]

...while playing video, the audio just disconnects and vidoe plays with video and subtitles.

...

...disconnect of audio.

Do realize: the audio(s) and the video(s) are separate (independent) streams in essence.

So are the subtitles, miscellaneous, etc.

[jraju]

Hi, i do realize. But what i want is a solution to this vixing problem
why audio disconnects in the middle and replay when going to tyhe same place in the video .
the codecs are correct, what should i look is the query i raised

[johns0]

Did you try running the original file in tsmuxer and changed the fps to 23.976 or 29.97 to see it came out ok?This doesn't convert it,just remuxes it to ts.

[gdgsdg123]

Try remuxing using the audio from the original file and the video from the processed file.

[jraju]

Hi, i usually like vlc media player to convert.
Is there any settings that would give me a constant or fixed frame rate of 29.97, so that i need not use so many softwares for easy editing.
Regarding johns , reply , i wish to point out that video codec is supported in my tv, but mp4aor m4a or sometimes even aac audio is not correcly playing in samsung tv, so i invariably has to change the audio to mp3 universal format.
if there is a setting in vlc , please say, so that i could change the frame rate to the above.]i do not want to set for individual file, for which i know the existence of setting in vlc. please

[abolibibelot]

i have to go back to tv mode and then again go to the scene to play. It plays again and there is another disconnect of audio.
the audio is in mp3format and video in h264.

Which is not compliant with the MP4 format specifications AFAIK.

Regarding johns , reply , i wish to point out that video codec is supported in my tv, but mp4aor m4a or sometimes even aac audio is not correcly playing in samsung tv, so i invariably has to change the audio to mp3 universal format.

That is weird. How old is that TV ? A workaround would be to play such media files through a standalone media player like the inexpensive and well regarded WD Live TV, or a blu-ray disk player with USB input ; in my experience LG BRD players have very good playback capabilities, I gave one to my brother years ago, a BD550, and purchased a newer and smaller one recently, a BP250 I paid 30€ used. But I remember having a similar issue with the BD550 and a MKV file flagged with "variable framerate" ; I tried many things (including remuxing to MP4 with Avidemux or ffmpeg or mp4box and to MKV with MKVToolNix) and eventually the solution proposed by johns0 above (using TSMuxer to set the framerate flag to the correct value then remuxing back to MKV) did the trick.
Strangely, the same MKV file which was then described as having a variable framerate (when I asked about it in 2015 – damn was I otherwordlily wordy back then ! O_O) now appears with a constant framerate with MediaInfo 18.08.1. Why is that ?

(2020, MediaInfo 18.08.1 x64, Windows 7)

Format                                   : Matroska
Version du format                        : Version 2
Taille du fichier                        : 1,39 Gio
Durée                                    : 1 h 41 min
Débit global moyen                       : 1 963 kb/s
Application utilisée                     : HandBrake svn3707
Bibliothèque utilisée                    : libmkv 0.6.4.1

Vidéo
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Profil du format                         : Main@L3
Paramètres du format                     : CABAC / 4 Ref Frames
Paramètres du format, CABAC              : Oui
Paramètres du format, RefFrames          : 4 images
Identifiant du codec                     : V_MPEG4/ISO/AVC
Durée                                    : 1 h 41 min
Largeur                                  : 656 pixels
Hauteur                                  : 572 pixels
Format à l'écran                         : 16:10
Format à l'écran d'origine               : 16:10
Type d'images/s                          : Constant
Images par seconde                       : 25,000 Im/s
Espace de couleurs                       : YUV
Sous-échantillonnage de la chrominance   : 4:2:0
Profondeur des couleurs                  : 8 bits
Type de balayage                         : Progressif
Bibliothèque utilisée                    : x264 core 110
Paramètres d'encodage                    : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / 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=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=2 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=0 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Langue                                   : Anglais
Default                                  : Oui
Forced                                   : Non
Gamme de couleurs                        : Limited
Coordonnées de chromaticité              : BT.601 NTSC
Caractéristiques du transfert            : BT.709
Coefficients de la matrice               : BT.601

(2015, MediaInfo 0.7.24 x86 [2009], Windows XP)

Format                           : Matroska
Taille du fichier                : 1,39 Gio
Durée                            : 1h 41mn
Débit global moyen               : 1 963 Kbps
Application utilisée             : HandBrake svn3707
Bibliothèque utilisée            : libmkv 0.6.4.1

Vidéo
ID                               : 1
Format                           : AVC
Format/Info                      : Advanced Video Codec
Profil du format                 : Main@L3.0
Paramètres du format, CABAC      : Oui
Paramètres du format, RefFrames  : 4 images
Type de muxing                   : Container profile=Unknown@3.0
Identifiant du codec             : V_MPEG4/ISO/AVC
Durée                            : 1h 41mn
Largeur                          : 656 pixels
Hauteur                          : 572 pixels
Format à l'écran                 : 1,629
Format à l'écran d'origine       : 1,631
Type d'images/s                  : Variable
Images par seconde               : 25,000 Im/s
Résolution                       : 24 bits
Colorimétrie                     : 4:2:0
Type d'image                     : Progressif
Bibliothèque utilisée            : x264 core 110
Paramètres d'encodage            : cabac=1 / ref=2 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=6 / 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=-2 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / constrained_intra=0 / bframes=2 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=0 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
colour_primaries                 : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M
transfer_characteristics         : BT.709-5, BT.1361
matrix_coefficients              : BT.601-6 525, BT.1358 525, BT.1700 NTSC, SMPTE 170M

Back to the main subject, this thread I archived a few years ago contains interesting insight on this issue.

[johns0]

I found that lg blu-ray players wouldn't play videos with vfr while my sony bdp-s380would play them.

[jraju]

Hi, aboli, do you mean to say that mp3 audio not cokpatible with the mp4, h264 , or
you mean that mp4 is compatible with aac, which is taken by softwares, while converting the avcodecs.
please clarify
My tv is samsung tv of 2015, which is having usb port support.
while converting to mp3, should l also change the bit rate to 128, or it will take the audio bitrate of 128 kpbs.
Mostly , the vlc media player when i play a downloaded video, shows, h2+4 with mp4a or m4a which is advanced form of audio
Hi, aboli, is it ideal to change all video to be converted to uniform 29.97 frame rate. what if a video has a frame rate of 15. will it play in this frame rate.

[gdgsdg123]

Hi, i usually like vlc media player to convert.

I doubt any pro uses it for the purpose...

Anyway, VLC uses FFmpeg for the job. So things are likely similar.

Hi, aboli, do you mean to say that mp3 audio not cokpatible with the mp4, h264 , or
you mean that mp4 is compatible with aac, which is taken by softwares, while converting the avcodecs.
please clarify

Those standards are only referential. You can simply ignore them all as long as you have a capable decoder.

[abolibibelot]

Hi, aboli, do you mean to say that mp3 audio not cokpatible with the mp4, h264 , or
you mean that mp4 is compatible with aac, which is taken by softwares, while converting the avcodecs.
please clarify

Actually I'm not so sure since MP3 is listed among the audio codecs supported by the MP4 container on this official ffmpeg article.

Those standards are only referential. You can simply ignore them all as long as you have a capable decoder.

Aren't there real technical incompatibilities between particular audio/video formats and particular containers ? I don't think that a H.265 stream can be put in a MPEG or AVI container...

[gdgsdg123]

Aren't there real technical incompatibilities between particular audio/video formats and particular containers ?

Technically, no...

...as long as you have a capable decoder.

[abolibibelot]

Technically, no...

https://xkcd.com/1475/

[gdgsdg123]

https://xkcd.com/1475/

...For anyone who's not technical lacks the knowledge to make use of such information.

[jraju]

Hi, may i have the solution to my query,

[gdgsdg123]

Hi, may i have the solution to my query,

So is this your real question?..

why then i had the problem of playing a vfr file... in my samsung tv.

Decoding capability limit. Consult the TV manufacturer.

[gdgsdg123]

how that cfr could be achieved in vlc, could you say. there is no direct settings for this in vlc.

You mean encoding videos using VLC and enforcing CFR?..

I don't know how exactly. (but IIRC you can specify FFmpeg CLI options somewhere in the "Advanced Preferences")

Hi, i usually like vlc media player to convert.

I doubt any pro uses it for the purpose...

Anyway, VLC uses FFmpeg for the job. So things are likely similar.

[jraju]

hi, gdgs, i raised the query , as i was not able to play a video having more than 45 fps and i remember ,sent the information on media info to this site.
Someone correctly pointed out about the vfr not playing in samsung tv.
i then went to my samsung tv manual and found that it supports on vlc but not on samsung , which supports only 30. he has advised to convert the fps and then i was able to play that in my samsung without any problem. The conversion was made with handbrake, which has a provision.
i generallyl use vlc media player for play, and so i ask for a setting in vlc media player.
Normally ,the settings made for one file repeats for other files, unless you go and uncheck in vlc, but i tried one coversion and it did , but the result was not 30fps rate.
So, i ask the query and i found no mention in advanced settings option also.

i will raise this query with vlc forum