Possible to avoid full transcoding ?

Discuss about generic usage of MediaCoder.

Moderator: HuggiL

Bigbernie
Beginner
Beginner
Posts: 1
Joined: Sat Jan 06, 2018 3:50 am

Possible to avoid full transcoding ?

Postby Bigbernie » Sat Jan 06, 2018 5:52 am

Good evening everybody
First, excuse my poor English

I always use DLNA and my Smart TV for viewing videos and movies.

It's absolutely impossible using a smart Tv to update or add a video reader. This tool is included in the firmware.
In 3 years long ten firmwares updates but never the video reader.

From a certain time, the TV refuse to read some movies. More and more often
In order to be able to, one soluce : transcoding. I transcode into avi or mkv
But it's not a fair way to do.
A " new" codec is certainly "guilty" but nothing to do with the TV formware. Advanced Video Coding I presume ?

I show you lower 2 documents
What my TV is able to read
What king of movie my TV is unable to read now.

Because what codec ?

Something to do to avoid full transcoding all time ? ( Of course I can see all movies on my PC. But not on my TV.)
Thanks a lot.


TV video config. What movies it's able to read.

Formats de lecture
• Conteneurs : 3GP, AVCHD, AVI, MPEG-PS, MPEG-TS,
MPEG-4, Matroska (MKV), Quicktime (MOV, M4V, M4A),
Windows Media (ASF/WMV/WMA)
• Codecs vidéo : MPEG-1, MPEG-2, MPEG-4 Part 2, MPEG-4
Part 10 AVC (H264), VC-1, WMV9
• Codecs audio : AAC, HE-AAC (v1/v2), AMR-NB, Dolby
Digital, Dolby Digital Plus, DTS 2.0 + Digital Out™,
MPEG-1/2/2.5 Layer I/II/III (inclut MP3), WMA (v2 à v9.2),

My TV is not able to read that. Most of web video now are like that.



Format : MPEG-4
Profil du format : Base Media / Version 2
Identifiant du codec : mp42 (isom/mp42)
Taille du fichier : 1,26 Gio
Durée : 2 h 43 min
Type de débit global : Variable
Débit global moyen : 1 105 kb/s
Date d'encodage : UTC 2018-01-01 17:03:52
Date de marquage : UTC 2018-01-01 17:03:52
gsst : 0
gstd : 9806738
FileExtension_Invalid : mov mp4 m4v m4a m4b m4p 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4v

Vidéo
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Profil du format : Main@L3.1
Paramètres du format, CABAC : Oui
Paramètres du format, RefFrames : 3 images
Identifiant du codec : avc1
Identifiant du codec/Info : Advanced Video Coding
Durée : 2 h 43 min
Débit : 975 kb/s
Largeur : 1 280 pixels
Hauteur : 530 pixels
Format à l'écran : 2,40:1
Type d'images/s : Variable
Images par seconde : 23,976 (24000/1001) Im/s
Images/s mini : 23,974 Im/s
Images/s maxi : 23,981 Im/s
Espace de couleurs : YUV
Sous-échantillonnage de la chrominance : 4:2:0
Profondeur des couleurs : 8 bits
Type de balayage : Progressif
Bits/(Pixel*Image) : 0.060
Taille du flux : 1,11 Gio (88%)
Titre : ISO Media file produced by Google Inc. Created on: 01/01/2018.
Date d'encodage : UTC 2018-01-01 17:03:52
Date de marquage : UTC 2018-01-01 17:03:52
Gamme de couleurs : Limited
Coordonnées de chromaticité : BT.709
Caractéristiques du transfert : BT.709
Coefficients de la matrice : BT.709
Alex3676
Amateur
Amateur
Posts: 15
Joined: Mon Dec 25, 2017 4:54 pm

Re: Possible to avoid full transcoding ?

Postby Alex3676 » Mon Jan 08, 2018 5:47 am

Try to enable this option in advanced settings x264: "Flag stream as interlaced but encode progressive".
MEncoder source/Encoder x264 / h264 format/Container mp4 / multiplex mp4box / Remux mp4box enable.

If this setting does not work with the MEncoder source switch to the FFmpeg source keep the encoder x264 / h264 format / container mp4 / multiplex mp4box / remux mp4box enable.

Run transcoding and see if it solves.

Most modern TVs read mp4 see if this option is enabled on tv.

Note that digital video par excellence translates to progressive scanning (the entire frame of the image is sequenced), but the analogue source of the HDTV is shown with the 1080i signal, still coming from the imaging tube technology ( CRT).
If the user's screen is modern, it is possible that the 1080i image is converted to some progressive signal, anyway. In fact, a number of other conversions will have to occur, in default of the user and in an absolutely transparent way.

check your TV settings and enable to read progressive video if you do not want to transcode.
Last edited by Alex3676 on Mon Jan 08, 2018 7:55 am, edited 1 time in total.
Alex3676
Amateur
Amateur
Posts: 15
Joined: Mon Dec 25, 2017 4:54 pm

Re: Possible to avoid full transcoding ?

Postby Alex3676 » Mon Jan 08, 2018 6:10 am

"Note that digital video par excellence translates to progressive scanning (the entire frame of the image is sequenced), but the analogue source of the HDTV is shown with the 1080i signal, still coming from the imaging tube technology ( CRT).

If the user's screen is modern, it is possible that the 1080i image is converted to some progressive signal, anyway. In fact, a number of other conversions will have to occur, in default of the user and in an absolutely transparent way."

If you do not want to transcode, take a look at your TV settings and see if your TV is enabled to receive progressive video.

Return to “Generic Discussions”

Who is online

Users browsing this forum: No registered users and 5 guests