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On my TV LG 47LE5810 I can not hear the sound of some movies captured from YouTube.
It does not quite understand why some feel and others do not.
For example audio of video1.mp4 is ok while for video2.mp4 the video is ok but audio is not supported!
Using MediaInfo i get:
---------Code:General Complete name : video1.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 File size : 115 MiB Duration : 5mn 2s Overall bit rate mode : Variable Overall bit rate : 3 193 Kbps Encoded date : UTC 2012-07-15 15:16:51 Tagged date : UTC 2012-07-15 15:16:51 gsst : 0 gstd : 302136 gssd : B9503B06BHH1352498239421143 gshh : o-o---preferred---sn-nx5cvox-hpaz---v24---lscache8.c.youtube.com Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L3.1 Format settings, CABAC : Yes Format settings, ReFrames : 1 frame Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 5mn 2s Bit rate : 2 999 Kbps Maximum bit rate : 5 339 Kbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 24.000 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.136 Stream size : 108 MiB (94%) Tagged date : UTC 2012-07-15 15:16:51 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 5mn 1s Bit rate mode : Variable Bit rate : 192 Kbps Maximum bit rate : 202 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 6.91 MiB (6%) Title : IsoMedia File Produced by Google, 5-11-2011 Encoded date : UTC 2012-07-15 15:16:51 Tagged date : UTC 2012-07-15 15:16:51
Suggestions? THANX!Code:General Complete name : video2.mp4 Format : MPEG-4 Format profile : Base Media / Version 2 Codec ID : mp42 File size : 369 MiB Duration : 2h 14mn Overall bit rate mode : Variable Overall bit rate : 384 Kbps Encoded date : UTC 2012-02-26 21:52:46 Tagged date : UTC 2012-02-26 21:52:46 gsst : 0 gstd : 8050520 gssd : B9503B025HH1352148733430023 gshh : o-o---preferred---sn-nx5cvox-hpal---v18---lscache3.c.youtube.com Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : Baseline@L1.3 Format settings, CABAC : No Format settings, ReFrames : 1 frame Codec ID : avc1 Codec ID/Info : Advanced Video Coding Duration : 2h 14mn Bit rate : 286 Kbps Maximum bit rate : 877 Kbps Width : 352 pixels Height : 288 pixels Display aspect ratio : 1.222 Frame rate mode : Constant Frame rate : 25.000 fps Standard : PAL Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.113 Stream size : 274 MiB (74%) Tagged date : UTC 2012-02-26 21:52:51 Audio ID : 2 Format : AAC Format/Info : Advanced Audio Codec Format profile : LC Codec ID : 40 Duration : 2h 14mn Bit rate mode : Variable Bit rate : 96.0 Kbps Maximum bit rate : 128 Kbps Channel(s) : 2 channels Channel positions : Front: L R Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 92.1 MiB (25%) Title : IsoMedia File Produced by Google, 5-11-2011 Encoded date : UTC 2012-02-26 21:52:48 Tagged date : UTC 2012-02-26 21:52:51
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I own a different LG TV with the ability to play back audio and video files. The media player feature has limitations on what it can play within the audio and video formats it supports. Some of the restrictions are listed in the manual, but there are likely other restrictions that can only be discovered by trial and error. The main difference I see in the audio is bitrate. video2.mp4 uses lower bitrates for audio.
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On my manual is reported as a range of bit rates apply:Originally Posted by usually_quiet
32kbps - 320kbps
So video2.mp4 should work.
How can I find more information (other than those given by MediaInfo)
to understand what does not work in video2.mp4?
Thanx! -
I'm wondering if it's actually a video problem that is manifesting itself by not playing the audio. In any event, the original poster has learned that TVs are NOT now and never have been "plays anything" devices.
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The problem is that I do not want to run a TV video in a format esoteric ... input format is an MPEG-4!Originally Posted by jman98
MPEG-4 is a STANDARD!
Or am I wrong?
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HiOriginally Posted by twiki7619
Try re-coding the audio in video2 to higher bitrate.
Like this:-
Code:ffmpeg -i video2.mp4 -c:v copy -c:a aac -strict experimental -b:a 220k -ar 44100 -ac 2 new_video2.mp4
Last edited by bat999; 10th Nov 2012 at 18:23.
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I've tried with ffmpeg but audio is not recognized!Originally Posted by bat999
HiOriginally Posted by twiki7619
Try re-coding the audio in video2 to higher bitrate.
Like this:-
Code:ffmpeg -i video2.mp4 -c:v copy -c:a aac -strict experimental -b:a 220k -ar 44100 -ac 2 new_video2.mp4
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MP4 is a standard, but your TV may not fully support the standard. It may play MP4 files but not all possible MP4 files. TVs are very restrictive about what they play.Originally Posted by twiki7619
The problem is that I do not want to run a TV video in a format esoteric ... input format is an MPEG-4!
MPEG-4 is a STANDARD!
Or am I wrong? -
Ok, I agree: the TV have more stringent requirements on the characteristics of the file to be executed...Originally Posted by jman98
what I do not understand is what is the difference between the two files above that prevents the TV to read the audio!
Maybe it's the file size?
One is much larger than the other?
On page 96 of the manual of the TV ( http://www.lg.com/it/supporto-prodotto/lg-47LE5810# )
there are no reported limitations that relate to the two files ...
Quote
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