[Q] Audio stutter in AAC format - MX Player

Dear Devs,
I have a MKV file with AAC audio, it played smoothly in PC.
But audio has shutters with MX Player ( HW / HW+ / SW are all tested )
Also tested by 3 different android devices, same results.
Could you help to solve this problem?
Here is the AAC file (85MB) which extracted from MKV.
Thanks!!

What are the 4 devices you tested it on?

CDB-Man said:
What are the 4 devices you tested it on?
Click to expand...
Click to collapse
Sorry for typo, tested on 3 devices.
Moto XT910 / CM11-nightly-20140828 w/ stock CM11 kernel
Nexus 7 2012 / stock 4.4.4 w/ stock kernel
Asus ME301T / stock 4.2.1 w/ stock kernel
All tested with lastest version of MX player Pro.
If any other information needed, please let me know.
Thanks.
Sent from my XT910 using XDA Free mobile app

Any progress or need more information?

ChungHung.Chen said:
Any progress or need more information?
Click to expand...
Click to collapse
I've checked your .aac file but audio itself played with no lag.
I think this is not audio issue but video issue. Would you send full or part of .mkv file?
Thanks

bleu8888 said:
I've checked your .aac file but audio itself played with no lag.
I think this is not audio issue but video issue. Would you send full or part of .mkv file?
Thanks
Click to expand...
Click to collapse
Hi,
Here is the Test Video.
Which created by latest MKVMerge.
Thanks for your help.

ChungHung.Chen said:
Hi,
Here is the Test Video.
Which created by latest MKVMerge.
Thanks for your help.
Click to expand...
Click to collapse
It is the problem of .mkv file itself. Audio track contains less frames than video track.
So MX Player is stuttering to keep a/v sync.

bleu8888 said:
It is the problem of .mkv file itself. Audio track contains less frames than video track.
So MX Player is stuttering to keep a/v sync.
Click to expand...
Click to collapse
Thanks for your information.
Because my audio track is from another source.
So the root cause is different frame rate of A/V source?
Does any method/tool to fix this issue?
RE-encode whole MKV file?

ChungHung.Chen said:
Thanks for your information.
Because my audio track is from another source.
So the root cause is different frame rate of A/V source? -> Yes
Does any method/tool to fix this issue? -> I have no idea. May someone else answer it.
RE-encode whole MKV file? -> Yes. there is no such feature in MX Player to stretch audio frames in realtime.
Click to expand...
Click to collapse
...

ChungHung.Chen said:
Thanks for your information.
Because my audio track is from another source.
So the root cause is different frame rate of A/V source? <-- Yes
Does any method/tool to fix this issue? <-- not any simple ways. You could force re-time/timeshift of the audio stream on mux. You could reencode the audio and slow playback speed.
RE-encode whole MKV file?
Click to expand...
Click to collapse
You should really be asking on a video encoding forum instead. Combining video/audio tracks from different sources is always not a simple task if they differ in any major area, such as length.

Related

The play of .mkv files

I have a few .mkv files im trying to view on another computer. I try to access through network and to no prevail NO SOUND i have video. So i add these .mkv files to a external HD and try to view them from it on the other pc also no sound but still. I do have video. I than move the files directly to the other pc and also same problem. Whats my problem here. is their a fix ? without having to get these again. \\
Thanks
Owner,
XPCPRO
jlmassey said:
I have a few .mkv files im trying to view on another computer. I try to access through network and to no prevail NO SOUND i have video. So i add these .mkv files to a external HD and try to view them from it on the other pc also no sound but still. I do have video. I than move the files directly to the other pc and also same problem. Whats my problem here. is their a fix ? without having to get these again. \\
Thanks
Owner,
XPCPRO
Click to expand...
Click to collapse
You are almost certainly missing the correct CODEC for your pirated movies to play back right.
Try using Google.
jlmassey said:
I have a few .mkv files im trying to view on another computer. I try to access through network and to no prevail NO SOUND i have video. So i add these .mkv files to a external HD and try to view them from it on the other pc also no sound but still. I do have video. I than move the files directly to the other pc and also same problem. Whats my problem here. is their a fix ? without having to get these again. \\
Thanks
Owner,
XPCPRO
Click to expand...
Click to collapse
Install K-Lite codec on your computer. Or use KMPlayer
For android, MxPlayer.
Hit thanks if I helped.
its defiantly not my codecs
jlmassey said:
its defiantly not my codecs
Click to expand...
Click to collapse
If you are trying to say that even playing these movies locally on a PC gives you video and no sound then you've got two options;-
1) There is no sound in the video
2) You're missing the CODEC you need to hear the audio
When you run diagnostics from DivX (I assume that you are actually using a decent player and not just Windows Media Player) what CODEC does it say was used to create the audio stream?
And this really isn't the right place for this thread either. XDA is a MOBILE PHONE DEVELOPMENT SITE - that's the third time I've told someone that today. If you can't fix it then post in the Off-Topic forum where it should be, in the **Desktops and Laptops Thread**
ive also try numerous players vlc mpc km
jlmassey said:
ive also try numerous players vlc mpc km
Click to expand...
Click to collapse
It doesn't matter what player you use. If the CODECs aren't on your system then the apps can't decode the audio stream. Why is that so hard to understand?
Can you get any of those files to play properly on any other device?
-- Sent from my TouchPad using Communities
SimonTS said:
It doesn't matter what player you use. If the CODECs aren't on your system then the apps can't decode the audio stream.
Click to expand...
Click to collapse
VLC has all the possible codecs you could ever need to play .mkv files, in other words, it's not a codec issue. Why is that so hard to understand?
OP, does this problem apply to any and all mkv files? Have you checked all the sound related settings, drivers etc. on the pc? Is it definitely just mkv files that are the problem?
SimonTS said:
It doesn't matter what player you use. If the CODECs aren't on your system then the apps can't decode the audio stream. Why is that so hard to understand?
Click to expand...
Click to collapse
Idexius said:
VLC has all the possible codecs you could ever need to play .mkv files, in other words, it's not a codec issue. Why is that so hard to understand?
OP, does this problem apply to any and all mkv files? Have you checked all the sound related settings, drivers etc. on the pc? Is it definitely just mkv files that are the problem?
Click to expand...
Click to collapse
I don't make it a habit to state things as a fact if I'm not certain about them.
VLC does NOT come with all the CODECs as it is not allowed to install any proprietary (read copyrighted) CODECs. If you don't believe me then the OP at least might find this page on AfterDawn useful as it also contains links to some of the more common CODEC packs.
Important Note: While VLC will work for most MKV files you will find, the package does not include any proprietary codecs. RealVideo and ON2 VP6 are examples of codecs not packed with VLC for this reason. Therefore with VLC, if you get a Matroska file that contains RealVideo, you are pretty much in the dark and will have to look for another playback option.
Click to expand...
Click to collapse
This is the exact reason why I asked the OP to run diagnostics from his software and post what CODEC the software says was used to create the audio stream.
But, as usual on this forum at the moment, people don't read the rules, post in the wrong place, don't actually bother to do what the people who are trying to help them ask them to do etc etc etc
SimonTS said:
VLC does NOT come with all the CODECs as it is not allowed to install any proprietary (read copyrighted) CODECs
Click to expand...
Click to collapse
I never said VLC comes with all the codecs, but since it has open source alternative for just about any audio/video stream you can pack in an mkv and throw at it, VLC practically has "all the possible codecs you could ever need to play an mkv file", which on the other hand means OP most likely does not have a codec problem. I suggest you look into codecs more closely and hone that reading comprehension of yours.
Idexius said:
I never said VLC comes with all the codecs, but since it has open source alternative for just about any audio/video stream you can pack in an mkv and throw at it, VLC practically has "all the possible codecs you could ever need to play an mkv file", which on the other hand means OP most likely does not have a codec problem. I suggest you look into codecs more closely and hone that reading comprehension of yours.
Click to expand...
Click to collapse
You should read your own post ...
VLC has all the possible codecs you could ever need to play .mkv files
Click to expand...
Click to collapse
There is zero ambiguity there - you are stating, explicitly, that any .mkv file will play on VLC because VLC has "all the possible codecs". That is simply not true.
Without the OP replying and telling us what CODEC the audio stream was encoded with it is impossible to state whether VLC should work with that stream - heck, the OP may even be using an old version of VLC with less CODECs than the current version.
And none of this matters one iota anyway - this thread shouldn't even be here, as I pointed out quite clearly yesterday.
SimonTS said:
There is zero ambiguity there - you are stating, explicitly, that any .mkv file will play on VLC because VLC has "all the possible codecs".
Click to expand...
Click to collapse
You just so happened to leave out the rest of the sentence, the italicized part was the relevant bit. But in any case OP seems to have lost interest.
jlmassey said:
I have a few .mkv files im trying to view on another computer. I try to access through network and to no prevail NO SOUND i have video. So i add these .mkv files to a external HD and try to view them from it on the other pc also no sound but still. I do have video. I than move the files directly to the other pc and also same problem. Whats my problem here. is their a fix ? without having to get these again. \\
Thanks
Owner,
XPCPRO
Click to expand...
Click to collapse
hi,
Use Klite Codec or KMplayer for your Computer
For Android Phones Use MxPlayer or Mobo Video Player Pro(It will play mostly all formats )
Hit Thanks if i help You

[Q] .mp4 video playback problem

I watch alot movies on my phone and when a movie is .avi format no matter how big (1,2gb) is playing with no problem, BUT when its .mp4 on the stock and some other players says, sorry this video can not be played, and on some players like mobo or mx (the ones with codecs) plays but with lag (the picture is like a slow motion)?
Its funny cos the videos that are recorded with the phone are .mp4 and are played very well...
vonuzu said:
I watch alot movies on my phone and when a movie is .avi format no matter how big (1,2gb) is playing with no problem, BUT when its .mp4 on the stock and some other players says, sorry this video can not be played, and on some players like mobo or mx (the ones with codecs) plays but with lag (the picture is like a slow motion)?
Its funny cos the videos that are recorded with the phone are .mp4 and are played very well...
Click to expand...
Click to collapse
Try quickpic or es player
sent from my awesome g3
hit thanks if i helped or asked u
Arjav23 said:
Try quickpic or es player
sent from my awesome g3
hit thanks if i helped or asked u
Click to expand...
Click to collapse
Im sure its not a player problem, coz ive tried them all...
was egountyi
First could you dump mediainfo details about this mp4 file?
vonuzu said:
Im sure its not a player problem, coz ive tried them all...
Click to expand...
Click to collapse
Which rom are u on?
Sent from my GT-I5800 using xda premium
Arjav23 said:
Which rom are u on?
Sent from my GT-I5800 using xda premium
Click to expand...
Click to collapse
Im on Kirillos now, but its the same on all ive tried. Also its the same on the stock rom.
Maybe someone could download a .mp4 movie and see if it lags also.. ?
vonuzu said:
Im on Kirillos now, but its the same on all ive tried. Also its the same on the stock rom.
Maybe someone could download a .mp4 movie and see if it lags also.. ?
Click to expand...
Click to collapse
Most likely your mp4 file has H264 video with a profile above what this device supports in hardware... For that reason i would like a dump of the technical details of the file. On windows if you use MPC-HC there is a properties windows with a mediainfo tab.
AVI or MP4 are only the container format that encompasses varius audio, video, subtitles tracks. The video codec inside the track is what matters. Most AVI files contain one track of video and one track of audio, but the codecs usually are XVID and MP3. In the case of MP4 files the codecs are H264 and AAC. But H264 has a enormous range of profiles and levels that increase the CPU power needed for a given bitrate.
http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles
IIRC, this device only supports H264 baseline profile in its hardware decoder, so if your file has a higher profile using MXplayer it will decode in software.

VC-1 files crash while seeking

I was just curious if anyone was running into this issue. For some reason, seeking any VC-1 .mkv files will crash MX Player.
My device is a Tab S. It seems to happen regardless of what decoder or codec I'm using.
Megalith said:
I was just curious if anyone was running into this issue. For some reason, seeking any VC-1 .mkv files will crash MX Player.
My device is a Tab S. It seems to happen regardless of what decoder or codec I'm using.
Click to expand...
Click to collapse
I have tsted in my device & everything is working fine. Can you collect the logs by launching mx log collector immediately after crash.
Kindly upload the logs. It will be helpful to resolve your issues.
ktsamy said:
I have tsted in my device & everything is working fine. Can you collect the logs by launching mx log collector immediately after crash.
Kindly upload the logs. It will be helpful to resolve your issues.
Click to expand...
Click to collapse
I've attached a .zip file with the logs.
@bleu8888 could you take a look?
@Megalith stock or custom rom?
CDB-Man said:
@bleu8888 could you take a look?
Click to expand...
Click to collapse
I have already forwarded your report to the developer.
@Megalith
There are lot of audio frame decoding error followed by libc fatal error.
Can you remux your video without audio track (you use mkvtoolnix) & check again?
Megalith said:
I've attached a .zip file with the logs.
Click to expand...
Click to collapse
It looks like a ffmpeg audio codec bug. We are currently working on internal structure renewal for MX Player 1.8.
I will send you a new test build with updated ffmpeg codecs after finishing current task. It would be possible on next week.
Thanks.
bleu8888 said:
It looks like a ffmpeg audio codec bug. We are currently working on internal structure renewal for MX Player 1.8.
I will send you a new test build with updated ffmpeg codecs after finishing current task. It would be possible on next week.
Thanks.
Click to expand...
Click to collapse
Great, thanks for taking a look at that. I look forward to the new build.
I downloaded VLC and it's able to seek without crashing, but I much prefer the minimal UI of MX Player.

[Q] Cant change audio track in HW mode

Cant change audio track in HW mode
When playing an mkv file with two audio tracks when using HW mode
the player does not actually change audio track even though the new audio track is selected
why is this?
when using HW+ mode changing audio tracks works fine
though HW+ does have its own problems
Playback can suddenly stop at certain points of a video
(I have a mkv video that stops in the exact same place when using HW+)
Seeking does not work( ie cant jump to half way though the video)
when you enable SW for audio there are jumps in the video and the audio drops in and out
after a short while the audio stops dropping in and out and the video stops droping frames but then the video and audio are
out of sync
Hopefully these problems will be fixed soon, as aside from these issues MX Player is awesome!
happy with MX Player Pro purchase
I would like to help improve MX Player,
can we send in logs to help improve MX Player?
RetroMatto said:
Cant change audio track in HW mode
When playing an mkv file with two audio tracks when using HW mode
the player does not actually change audio track even though the new audio track is selected
why is this?
when using HW+ mode changing audio tracks works fine
though HW+ does have its own problems
Playback can suddenly stop at certain points of a video
(I have a mkv video that stops in the exact same place when using HW+)
Seeking does not work( ie cant jump to half way though the video)
when using HW for video and SW for audio there a jumps in the video(losing frames???)
Hopefully these problems will be fixed soon, as aside from these issues MX Player is awesome!
happy with MX Player Pro purchase
I would like to help improve MX Player,
can we send in logs to help improve MX Player?
Click to expand...
Click to collapse
Try SW audio decoder, this option is below the audio track selection window.
bleu8888 said:
Try SW audio decoder, this option is below the audio track selection window.
Click to expand...
Click to collapse
I have tried that but the video and audio lose sync
RetroMatto said:
I have tried that but the video and audio lose sync
Click to expand...
Click to collapse
What's your device model name and ROM version?
And would you share your video having this issue?
bleu8888 said:
What's your device model name and ROM version?
And would you share your video having this issue?
Click to expand...
Click to collapse
I am using a Minix NEO-X8H-PLUS (MBX NEO-X8H-PLUS)
with Android 4.4.2 Kernal version is 3.10.33
build number is KOT49H.20141122 release-keys
The files I am using are around 4gb, how would I get them too you?
RetroMatto said:
I am using a Minix NEO-X8H-PLUS (MBX NEO-X8H-PLUS)
with Android 4.4.2 Kernal version is 3.10.33
build number is KOT49H.20141122 release-keys
The files I am using are around 4gb, how would I get them too you?
Click to expand...
Click to collapse
I will try to test on your device first.
Thanks for the info.
bleu8888 said:
I will try to test on your device first.
Thanks for the info.
Click to expand...
Click to collapse
Thanks
Try to Uninstall the Player
Can you just uninstall the MX player and try install this again , might be well help you .
Same issue on Xiaomi Mi5: SW and HW+ options don't work, in HW mode changing audio track does nothing.

DTS pass-through to a DTS capable receiver from nVidia Shield (MX Player Pro)

Hi,
I am facing one problem with the subject.
I set the following settings in MX Player Pro
1. Remove (or do not install external codecs (modified ffmpeg library)
2. Turn off HW+
3. Select all Hardware accelerated codecs in HW+ video and HW+ audio codecs.
Then pass-through DTS works but basically not watchable too much distorted audio, video pauses, freezing etc..
4. Turn off HW audio track selectable
Then pass-through DTS works. video sort of watchable but video seeking is not working anymore + it pauses every few seconds
Is it possible somehow to fix video seeking on nvida shield with Turned off HW audio track selectable or to fix DTS audio distortion with HW audio track selectable on?
Thank you in advance.
I cannot believe that passthorugh is working for everyone but me or nobody uses it at all with MX Player?
come on people! )
HW accell AC3 + DTS passthrough. DTS doesn't work!
plus broken time seek (fast forward, rewind) on all streams.
Makcum said:
I cannot believe that passthorugh is working for everyone but me or nobody uses it at all with MX Player?
come on people! )
HW accell AC3 + DTS passthrough. DTS doesn't work!
plus broken time seek (fast forward, rewind) on all streams.
Click to expand...
Click to collapse
Kindly collect a bug report immediately after reproducing the issue & share with us. It will help us to understand the issue better.
Thirumalai.K said:
Kindly collect a bug report immediately after reproducing the issue & share with us. It will help us to understand the issue better.
Click to expand...
Click to collapse
Thank you very much for your reply.
I hope I did it right.
Makcum said:
Thank you very much for your reply.
I hope I did it right.
Click to expand...
Click to collapse
I have already replied to your mail. Can you check whether it happens with local playback or not?
Thirumalai.K said:
I have already replied to your mail. Can you check whether it happens with local playback or not?
Click to expand...
Click to collapse
Thank you for your reply.
I am preparing a test case right now (copying the same media to the flesh drive). I will update you with info soon.
Thank you again for taking care of it.
yes. It is the same issue if i Play local files.
broken DTS plus broken fast forward and rewind on HW.

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