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Error "Playback not available" while playing MP4 movie on KDL46NX720

post #1 of 12
Thread Starter 
Hi !,

I bought Sony Bravia LED Model No. KDL-46NX720 in October 2011. Earlier i was shocked to know that this model doesn't supports playing of .mkv files, so i had to convert the .mkv movies into .mp4 first and then copy it to USB or HDD and play it.

Since last week while watching a MP4 movie after run of around 45 minutes or so it stopped and displayed an error "Playback not available". I changed the version of video converter to older one and upgraded as well, I formatted the disks, scanned them, defragged them but it didn't help. It displayed the same error. To my astonishment the older movies which played well also started to display the same error after a run of around the same time.

I upgraded the firmware to the latest one i.e. Version PKG4.005GAA in May 2012 and was working well. GOD knows what happened with the LED. If anyone comes across the same error & have a solution do write back.

Regards,
JAK
post #2 of 12
i am facing the same problem while playing Full HD and Half SBS 3D movies....
post #3 of 12
If said movie files are of questionable origin then what you are seeing is likely some form of DRM added into the firmware (like Cinavia).

Jason
post #4 of 12
Thread Starter 
Dear Jugal,

I've called the guys at call center & they said that the converter has some issues there would be nothing wrong with the LED.

Try some other movie converter or it's best to buy a WD (Western Digital) tuner or converter which converts the movie files and enables it to run on the LED at real time...Not so expensive though but i'll purchase it ina couple of days and will let you know.

But i;'ve heard that Sony has closed it's R&D and the model which we have is already discontinued. Heard rumors about Sony at the verge of closing down it's business. But anyways my next LED will be Samsung...It's good..& decent prices as well in comparison to Sony..

Abhisheik Jain
post #5 of 12
i have facing the same problem tell me solution
post #6 of 12
Did anybody identify the root cause for this issue? Thx.
post #7 of 12
Thread Starter 
Hey Guys !

The update on this issue is:

The movies are encoded to stop piracy so either you have to decode them with the softwares (i'm currently working on them) & most importantly the Sony has strict rules and regulations for playing the industry. If you had a Sony music system in the 1990's you would have seen that the players wouldn't play the audio cd's which were recorded by us..

The best solution is to spend $100.00 - $ 150.00 and get the Western digital player and run the movies through it on your TV it will save your time and energy..But ask the vendor for the same issue which you've raised here.

I'm going to do the same.
post #8 of 12
Hi.i am using foxreal blueray ripper. Movies play on PC and iPad but not tv. How does western digital player work? By avoiding Sony completely ? Thx
post #9 of 12
I am experiencing a similar issue with a KDL55HX850. Most of my DVD and Blu-Ray rips play OK, but now I got two which first play OK, but then suddendly I get "Playback not available". These are MP4s I produced with Handbrake. One of them is Avatar. The scenes where I got problems were at 27 minutes and 55 minutes from the start (this is the Collector's Extended version). These were scenes that seemed to involve a high bitrate, so I first tried to reduce the maximum bitrate and total file size, from the initial 10+ GB. Did not help, except that I could get past the 27 minute point until the 55 minute point (which is a scene in which this cute blue couple is in the forest, and the "camera" is moving in ways that makes much of x.264 style compression pretty much ineffective). Then I tried lots and lots of different variations of x.264 encoding options. Did not help. At some point I noticed that there is funny cracking sound in that scene at 55 minutes. So the last thing I did was to drop the AAC audio track, and now I at least can fast forward through the whole film without getting stuck. This "Playback not available" would show up when playing the film at normal speed, but I would also always catch it by fast forwarding through the whole film at maximum (3) speed.
I will be trying out different audio options later today. It is of course possible that this is not really an audio issue, as it could also be some kind of MP4 container issue that doesn't show up if there is only one track (the video). I'll report if I find out something new.
post #10 of 12
I remuxed the x.264 video track and the AAC audio track to an M2TS container with ffmpeg. This seems to work now.

I tried transcoding the audio track, and creating the MP4 file with MP4Box, but neither one worked. The only working thing Handbrake could produce was the MP4 file without any audio tracks. MP4Box would produce a "working" MP4 file, but the audio track was badly off several seconds so that the film was unwatchable. I don't have any explanation for these findings. I have successfully used Handbrake before, and I cannot tell why this file proved to be so problematic. The size is not the issue (I transcoded the film to really small < 4 GB MP4 files which had the same Playback not available effect), and no other simple explanation was found. This seems like a Handbrake MP4 format issue that shows up in _some_ circumstances, but why would it show up with this particular film and not with others, beats me. The only thing I can come up with is that this film is unusually long (almost 3 hours), and the other film I had the same problem showing up is very long: this is the newly released The Hobbit, which too is around 3 hours. But the absolute length of the film (in minutes) should not cause a problem like this (or should it?), and one would expect the problem to rather be caused by the bitrate or the absolute size of the MP4 file, which was not the case.
post #11 of 12
I am encountering this same error on my Sony KDL-32CX520.

I have been converting my DVDs to .mp4 (H.264), using Handbrake, but noticed that many of the longer movies will give a "playback not available" a little ways into the movies. I'm not sure what this problem is. I usually play these off a hard drive, but I've even tried to play them from a USB with same results. My Sony BluRay BDP-S590 will play them off the USB without any issues. Also, if the files are in .avi format, they play fine.

Any suggestions?

According to the manual, these are the supported formats.

Video MPEG-1 .mpg, .mpe, .mpeg O O
MPEG-2 PS .mpg, .mpe, .mpeg O O
MPEG-2 TS .mpg, .m2t, .mpe, .mpeg O O
AVC (MPEG-4 part 10), MPEG-2 TS .m2ts, .mts O O
AVC (MPEG-4 part 10), MP4 .mp4 O O
MPEG-4 Visual (MPEG-4 part 2), MP4 .mp4 O O
WMV (9/VC1), Asf .asf, .wmv O O
Music LPCM .wav O1 O
MPEG-1 Audio Layer-3 .mp3 O O
WMA (9), Asf .wma O O
- .aac X X
Image JPEG .jpg, .mpo O2,3 O2
RAW (Sony α) .arw4 O O

Not supported are:
DivX SD (Home Theater profile 3.0) .divx, .avi X X
Xvid .avi X X
DivX HD .divx, .avi X X
OGG .ogv X X
3gpp/3gpp2 .3gp, .3g2 X X
DivX HD plus, MKV .mkv X X
RealMedia .rm, .rmvb X X
MOV .mov X X
FLV .flv X X
MVC .mvc X X
PNG .png X X
WMA (9) .aac X X

USB supported file systems are FAT12, FAT16, FAT32, and exFAT. Files larger than 4GB are only supported when using the exFAT file system.
Not all files are guaranteed to play.

Here is the info on the file I was trying to play. I'm not doing anything special, just a normal mid-quality vid.
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 1.27 GiB
Duration : 2h 32mn
Overall bit rate mode : Variable
Overall bit rate : 1 190 Kbps
Encoded date : UTC 2013-04-01 06:32:01
Tagged date : UTC 2013-04-01 07:17:41
Writing application : HandBrake 0.9.8 2012071700

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 2h 32mn
Bit rate mode : Variable
Bit rate : 1 024 Kbps
Width : 1 280 pixels
Height : 528 pixels
Display aspect ratio : 2.40:1
Frame rate mode : Variable
Frame rate : 23.976 fps
Minimum frame rate : 23.810 fps
Maximum frame rate : 24.246 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.063
Stream size : 1.09 GiB (86%)
Writing library : x264 core 120
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=2 / 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=0 / threads=6 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=1 / keyint=240 / keyint_min=24 / scenecut=40 / intra_refresh=0 / rc_lookahead=10 / rc=2pass / mbtree=1 / bitrate=1024 / ratetol=1.0 / qcomp=0.60 / qpmin=3 / qpmax=69 / qpstep=4 / cplxblur=20.0 / qblur=0.5 / ip_ratio=1.40 / aq=1:1.00
Encoded date : UTC 2013-04-01 06:32:01
Tagged date : UTC 2013-04-01 07:17:41
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 2h 32mn
Bit rate mode : Variable
Bit rate : 160 Kbps
Maximum bit rate : 199 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Delay relative to video : 83ms
Stream size : 174 MiB (13%)
Language : English
Encoded date : UTC 2013-04-01 06:32:01
Tagged date : UTC 2013-04-01 07:17:40



I did find in another forum this advice, so I'll try and convert this file to see if his advice works.

"This is what worked for me:

TV: Sony KDL-32EX308
Software: Handbrake
OS: (shouldn't matter, but) Sabayon Linux 8
In Handbrake, I set the Codec to MPEG-4 (FFmpeg)
Use NTSC (29.97) framerate and set it to Variable Framerate.
Set the encode to Constant Quality and put the slider between 1 and 8. Setting 1 will be higher quality but larger filesize. If you source video is already a crappy bitrate, then a higher setting here will not help you. (you can't get something from nothing).
Make sure the filename stays .mp4 and NOT .m4v. I changed the default settings in Preferences to not use this.
My audio is set to AAC. I use 160Kbps Audio bitrate.

These settings work on my Sony TV. In the future I will by an LG T.V. as they are more compatible with other codecs and do not tie you to one OS. " Posted by Teufelshunde.

Im
post #12 of 12
Quote:
Originally Posted by dmelott View Post

I am encountering this same error on my Sony KDL-32CX520.

I have been converting my DVDs to .mp4 (H.264), using Handbrake, but noticed that many of the longer movies will give a "playback not available" a little ways into the movies. I'm not sure what this problem is. I usually play these off a hard drive, but I've even tried to play them from a USB with same results. My Sony BluRay BDP-S590 will play them off the USB without any issues. Also, if the files are in .avi format, they play fine.

Any suggestions?

According to the manual, these are the supported formats.

Video MPEG-1 .mpg, .mpe, .mpeg O O
MPEG-2 PS .mpg, .mpe, .mpeg O O
MPEG-2 TS .mpg, .m2t, .mpe, .mpeg O O
AVC (MPEG-4 part 10), MPEG-2 TS .m2ts, .mts O O
AVC (MPEG-4 part 10), MP4 .mp4 O O
MPEG-4 Visual (MPEG-4 part 2), MP4 .mp4 O O
WMV (9/VC1), Asf .asf, .wmv O O
Music LPCM .wav O1 O
MPEG-1 Audio Layer-3 .mp3 O O
WMA (9), Asf .wma O O
- .aac X X
Image JPEG .jpg, .mpo O2,3 O2
RAW (Sony α) .arw4 O O

Not supported are:
DivX SD (Home Theater profile 3.0) .divx, .avi X X
Xvid .avi X X
DivX HD .divx, .avi X X
OGG .ogv X X
3gpp/3gpp2 .3gp, .3g2 X X
DivX HD plus, MKV .mkv X X
RealMedia .rm, .rmvb X X
MOV .mov X X
FLV .flv X X
MVC .mvc X X
PNG .png X X
WMA (9) .aac X X

USB supported file systems are FAT12, FAT16, FAT32, and exFAT. Files larger than 4GB are only supported when using the exFAT file system.
Not all files are guaranteed to play.


It's now 2013, August. Sony can not release a firmware to fix this? I want .mkv, .rmvb, .divx, avi hd, etc. I want to play files off my 1TB NTFS hard drive.
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