Develop Bugs

[Q] 720p video playback issue

Hello,
I'm having some problems about playing 720p videos from HTC Desire Z. It plays some 720p videos smoothly which are recorded by itself (also there is a fps problem in there, some are about 19fps).
I wonder which {container, codec} we should use to play 720p videos smooth. I tried with several media players like Vplayer, Moboplayer, Rockplayer and Android's default media player.
I tried some files. Here their properties:
Container: MKV
Video Codec: H264
Audio Codec: AC3
Overall Bitrate: ~4.5Mbps
Length: 71min
Size: 2.2GB
This was a concert video.
--
Container: MKV
Video Codec: H264
Audio Codec: AC3
Overall Bitrate: ~4.5Mbps
Length: 40min
Size: 1.1GB
This was a tv show.
Rockplayer can play this videos but not smooth enough. It freezes for 5-10 milliseconds at every 1-2 seconds.
Using stock 2.3.3 ROM and stock SD Card.
Phone can play 480p videos smoothly but I think it can play 720p videos since it can record 720p videos.
Thanks in advance.

The DZ isn't actually powerful enough to play 720p videos from an external source. I can barely play 480p AVI smoothly. MKV and MP4 are a total lost cause for me. Haven't tried after I installed Virtuous 2.0 and had it OC'd to 1.5GHz though.

ArmedandDangerous said:
The DZ isn't actually powerful enough to play 720p videos from an external source. I can barely play 480p AVI smoothly. MKV and MP4 are a total lost cause for me. Haven't tried after I installed Virtuous 2.0 and had it OC'd to 1.5GHz though.
Click to expand...
Click to collapse
As far as I know, DZ has hardware decoding for 720p videos. So it can play 720p videos and DZ records with 8mbps and encodes with h264 and its container is 3gp. Only difference is container. Maybe changing container will fix this but I tried with avi, mkv. Maybe I should try with 3gp container.
Anyone tried?

Try dice player
Sent from my HTC Desire S using XDA Premium App

tcchuin said:
Try dice player
Sent from my HTC Desire S using XDA Premium App
Click to expand...
Click to collapse
Tried with its trial version but it says "sorry, this video can not be played" when i try to play video which I mentioned at my first post (tv show one) and also another video which is a mp4 video.
DicePlayer can not play any video in the phone

I use Rock Player Lite and it can play MP4 vids properly. Granted, I just OC'd my DZ to 1.5GHz, and an MP4 file encoded in h.264 with an average bitrate of 1.5kbps plays flawlessly. At stock speeds the audio goes out of sync and artefacts get introduced. Haven't tried MKV files since I OC'd yet though. Software decoding in RPL.
Hardware decode basically is the same as the default media player, software decoding takes up more CPU resources, but is able to play more formats and containers.

I haven't found any way to reliably open mkv container on desire z. MX video player by far does the best job (and yes, I've used other players like rockplayer, dice player, etc) but it still plays 720p mkv h264 slightly choppy. 720p h264 mp4 plays fine with software and hardware decoder, while 720 avi xvid can play smoothly on a small overclock.
I try to avoid 720 anyway because the difference between 720 and 480 on a 3.7inch screen is barely visible to me lol

Exactly lol. As long as it can play 480 on the DZ it's more than fine by me. 720p on a 480x800 screen... ~_~
MX Video Player.. Never heard of it. Gonna search and try that out. How does it compare to Rock Player?

i really liked rockplayer for a long time until i found out mx player had software codecs tweaked for ARMv7. Check it out on the market, its free anyway lol

I tried mx player but still there is the same problem.
I also tried to change the container to mp4. PC plays well but when I try to play on phone, video is smooth but there is no sound and audio codec is ac3. Maybe the problem is here.
I tried with rockplayer using software decoding, there is sound but laggy video.

Try MX with SW. Works fine on any container and format so far for me.

ArmedandDangerous said:
Try MX with SW. Works fine on any container and format so far for me.
Click to expand...
Click to collapse
Tried in 3 available mode in MX Player but still laggy video

The trick is to use video in the correct settings for the hardware decoder. If you do that then it won't matter if it's in mkv or mp4.
For the video portion, use baseline profile h.264 with the maximum bitrate (VBV) capped at 8mbps up to 720p
For audio, use AAC-LC in stereo.
Sent from my HTC Vision

ChronoReverse said:
The trick is to use video in the correct settings for the hardware decoder. If you do that then it won't matter if it's in mkv or mp4.
For the video portion, use baseline profile h.264 with the maximum bitrate (VBV) capped at 8mbps up to 720p
For audio, use AAC-LC in stereo.
Sent from my HTC Vision
Click to expand...
Click to collapse
I think so. But there is a problem when playing MKV files. There is problem after I changed container to mp4, though.
But the audio codecs of videos which I tried are not AAC. Maybe this causes the problem.
I don't know, how hard can it be to play videos which have AAC audios.

Use Handbrake to encode and it'll be easy to specify AAC for audio. You can use the iphone profile for encoding.

Hi again,
I've solved my problem. I use dice player which plays 720p mkv videos (even with ac3 audio codec).
I wrote here dice player can't play any video in the phone. That was a hardware decoding problem, I think. When I try to play an unsupported video format with hardware decoding, hardware decoding crashes and unable to play videos as it should be.
So, after that if I restart the phone hardware decoding comes back and plays videos perfectly.
Is this a common issue? If it is not should I do a factory reset to my phone?

To be honest, with our default 800*480 screen, we would not be able to take advantage of 720p quality as 720p is 1280*720 (Unless we stream it to a HDTV or Monitor). Re-encoding it to 800*450 is wiser to conserve file size as well
found this recommended settings at afterdawn for Handbrake or MEGUI. Tried it with rockplayer hardware decoding and it is smooth i used mp4 format
full link is here http://www.afterdawn.com/guides/archive/converting_video_for_the_htc_desire_z.cfm
Code:
Recommended Video Options
Format H.264 (MPEG-4 AVC)
Profile Baseline
Level 3
Average Bitrate 800kbps - 1800kbps
Max Resolution 800×480 @ 24fps
800×480 @ 25fps
800×432 @ 30fps
768×448 @ 30fps
720×480 @ 30fps
Maximum GOP Length 250
Minimum GOP Length 25
B-frames None
CABAC Off
Other Recommended Settings
Audio Format AAC
Audio Channels 2
Audio Bitrate 128kbps - 256kbps
Container (File Type) MP4*
Subtitle Format Timed Text or SRT **

[Q] Is it possible to use H/W decoding to watch *.mkv in nexus 7(2013)

Have any one tried it.
Or will it be done by flashing a custom rom(may be cm10)

mahoihei said:
Have any one tried it.
Click to expand...
Click to collapse
Yes. My sat-box records in .mkv and it is viewable (streamed from sat-box) without changing anything. I use vplayer.

I use diceplayer, works great.
Sent from my Nexus 7 using Tapatalk HD

MX Player with custom codec.
Sent from my Nexus 10 using Tapatalk 4

sidthegreatest said:
MX Player with custom codec.
Sent from my Nexus 10 using Tapatalk 4
Click to expand...
Click to collapse
+1. You can even boost the volume level to upto 30 if you use HW+ decoding, works amazing on AC3/DTS audio

serviio and diceplayer. Makes a great DNLC network that can stream any file to your Nexus. As for playing it on the nexus, I personally dont like putting movie files on mine since the memory gets used up rather quickly.

MX Player and the VLC Beta both work fine with .mkvs for me. I've even played some pretty hefty 1080p files with no issues.

you don't need to do anything. just open the file with MX player, be player or similar. sorry I'm not understanding why this is an issue for you

You can use HW decoding for video in players such as MX Player but you can't do audio HW decoding for some codecs since Dolby is suing everybody for supporting their formats without permission and is also refusing to license them.

MX Player works great in HW+ mode. I have had no problem with normal HD mkv files or 10 bit anime mkv

Tony_YYZ said:
You can use HW decoding for video in players such as MX Player but you can't do audio HW decoding for some codecs since Dolby is suing everybody for supporting their formats without permission and is also refusing to license them.
Click to expand...
Click to collapse
Actually you can, custom codec option in mx player Worked wonders for me, there's threads about this. Stock rom, locked.

Yes, it can for both 8-bits 720p and 1080p, but 10-bits sorry, can't....

Can anyone point me to the right codec to download? All videos I try are using S/W instead of H/W in MxPlayer (except MP4). WMV and MKV are playing in S/W. Thanks a bunch

joey4321 said:
Can anyone point me to the right codec to download? All videos I try are using S/W instead of H/W in MxPlayer (except MP4). WMV and MKV are playing in S/W. Thanks a bunch
Click to expand...
Click to collapse
ya, where do i download the latest HW codecs? my s/w works fine but HW mode doesnt work too well in mxplayer pro/ lags and stutters

Some education is needed
MKV is not a codec, it's a container format much like DVD .... The problem is not the MKV container but what it contains. Generally the biggest problems are MKV's made from US OTA (Over the air) and cable TV recordings which all have the audio in AC3 format and usually in Dolby encoding. (And as someone mentioned Dolby doesn't like it when they don't get their Cut, even if the software is free and no one is actually profiting from it except the Consumer)
I've recorded and archived several TV series since 2006 and some of my first MKV's kept the AC3 audio format (but converted the video to h.264) because I was having sound sync problems (Not sure if it was an x264 or the cable company's fault but the issue eventually went away) and for those I have to use software decoding for the audio but the video is still hardware accel .... The ones I've made in the last 3-4 years have the audio converted to AAC format and those have full hardware accel video and audio and play flawlessly and effortlessly even on my lowly Rockchip dual core TV Stick (720p and in the process of being embedded in a Motorola Lapdock)
Point being it's not the MKV container that is the problem, what counts is the formats it contains .... And in the case of us North Americans we need to convert the audio (AAC is the best bet IMO) so you may as well convert the video (Much of it is interlaced and that's another issue conversion fixes, Handbrakes default Decomb filter does it well) .... For that I would recommend x264 and Handbrake (x264 is included in Handbrake) which should not only take care of compatibility issues it also makes for a smaller file (Better transfer/streaming over wifi) without any loss of playback quality .... Also I would recommend stripping off any extra audio feeds (Languages) if you aren't going to use them, ditto for subtitles ... In other words keep it simple and convert to formats with known/best compatibility

SPAM.

http://forum.xda-developers.com/showthread.php?t=2156254
MX player > settings > decoder > download custom codec

what about the mpeg2 decode ,not h/w decode?

no hardware acceleration for 1080i dvb-s2 recordings or streams
My nexus 7 with stock Rom plays 1080p h264 content in MKV containers flawlessly with h/w acceleration with various players. Except for either streams or recordings from my tvheadend server. If they are 1080i (no German station broadcasts in 1080p) none of the players gets h/w working. SD and 720p do work though. The only difference I can see between my recorded files and the ones that do play is that the recordings have 25 fps whereas the other mkvs have about 24.
In the attachments there are two screenshots of two mkvs' properties. The 25 fps one is the one that won't work.
Anyone's got an idea? Thanks

from what i know,snapdragon still don't support 10bit decoding perfectly,thats why u can't use hw+ mode for 10bit video.
When I tried with my HTC One X,it can play 10bit video in hw+ mode though.Its likely for now Tegra and Exynos only support 10bit decoding in hw+ mode,even not perfectly.
u can refer to this thread ->
https://groups.google.com/forum/#!topic/mx-videoplayer/WKv1LNeUTSI

[Q] 1080p MKV / MP4 freezing

Hi,
i have problems with 1080p MKV and MP4 playback.
When i playback a movie with 1080p and Hardware Decoding, I get terrible blocking and freezing (strainge colours, green Pixel and so on).
I tested with MX-Player (H/W+), VLC Player, Plex and XBMC. The result is always the same.
When i use the same file in ts oder m2ts - Format, then everything is ok.
So i tested to create the mkv and mp4 File with different Tools: mkvmerge, ffmpeg, makemkv, mp4box and so on..
Always Errors and terrible playback.
Is there a trick or can the device handle HD only in *.ts without Errors???

stehohrhase said:
Hi,
i have problems with 1080p MKV and MP4 playback.
When i playback a movie with 1080p and Hardware Decoding, I get terrible blocking and freezing (strainge colours, green Pixel and so on).
I tested with MX-Player (H/W+), VLC Player, Plex and XBMC. The result is always the same.
When i use the same file in ts oder m2ts - Format, then everything is ok.
So i tested to create the mkv and mp4 File with different Tools: mkvmerge, ffmpeg, makemkv, mp4box and so on..
Always Errors and terrible playback.
Is there a trick or can the device handle HD only in *.ts without Errors???
Click to expand...
Click to collapse
I'm able to play 1080p mkv files and mp4 files without issue. I actually download a lot of 1080p movie trailer in mp4 format to my tablet. However, I normally use Archos Video player or BS player though as the hardware acceleration appears to be better on them than other video players I've tried.

I use mx player and never have an issue, have you tried the software codec for mx?
Sent from my SCH-I545 using Tapatalk

Try archos and the achos free codec pack.

MX player
Sent from my SAMSUNG-SM-N900A using xda premium

so, i tested more:
Archos has the best Performance. you only see sometimes litte stuttering. But the PGS-Subtitles are not shown -((
BS-Player has Picture -Errors
MX-Player in S/W and H/W Looks ok, but not enough Performance for full framerate Decoding.H/W+ Decoder has enogh Performance, but the same Errors in the Picture like BS-Player, Plex, XBMC abd so on.
I don't understand why... the Problem ist not all movies... and this are not the movies withe the highets Bitrate. convert to ts looks good.
I put a short sample online.. mail me, if you are interessed to verify and help... I can not post the link here.. (new user board-rule)

I just streamed a 1080p mkv from my WD Live network drive with no stuttering or sound issues. I use Archos player and the free codec pack.
Sent from my SM-P600 using XDA Premium HD app

i have the P605 with quadcore. has this other gpu than the P600 octagon ?

stehohrhase said:
Hi,
i have problems with 1080p MKV and MP4 playback.
When i playback a movie with 1080p and Hardware Decoding, I get terrible blocking and freezing (strainge colours, green Pixel and so on).
I tested with MX-Player (H/W+), VLC Player, Plex and XBMC. The result is always the same.
When i use the same file in ts oder m2ts - Format, then everything is ok.
So i tested to create the mkv and mp4 File with different Tools: mkvmerge, ffmpeg, makemkv, mp4box and so on..
Always Errors and terrible playback.
Is there a trick or can the device handle HD only in *.ts without Errors???
Click to expand...
Click to collapse
maybe is not the resolution but profile... 10bits encoding or 8bits encoding?

stehohrhase said:
i have the P605 with quadcore. has this other gpu than the P600 octagon ?
Click to expand...
Click to collapse
hey, stehohrhase, has this resolved with different player? I am tempted to buy p605, but I don't want to buy one that has issue with video playback.

angilinmago said:
hey, stehohrhase, has this resolved with different player? I am tempted to buy p605, but I don't want to buy one that has issue with video playback.
Click to expand...
Click to collapse
i guess is not the player... TS is just the container... this device can handle 1080p

no issues
I use MK player with no issues even in FULL HD movies!
Maybe your files (muvies) are stored in ExtStorage (microSD).
Have you check your microSD card speed?

Try Dice Player its one of the best players out there, but for DTS audio you need "libffmpeg.so" from the attachment below.
Other than that try a test sample with video stream only and see if it plays fine, if it does then mux in the other streams one at a time until the problem returns.

10 bits encoding maybe?

Playing Hi-res (4K, 10bit, HEVC) video on HTC 10

Hello!
According to Snapdragon 820 specifications, this SoC can play 4K video with 10 bit HEVC encoding. Just for interest, i upload sample video (www.demo-uhd3d.com) and use MX and VLC players. But both of them plays videos very slow, looks like slideshow.
So not clear, why our device can not play such files? There are lack of needed codecs (that must be instaled by device manufacturer), or I need specific player?
Thank you.

Did you try different codecs in mx player app while playing?

ali nz said:
Did you try different codecs in mx player app while playing?
Click to expand...
Click to collapse
Yes, of course. HW, HW+ - no one working. May there is error in fiel coding, but not celar what exactly causes this problem. Some users says that some 4K files can be played.

heavy-razzer said:
Some users says that some 4K files can be played..
Click to expand...
Click to collapse
Easily.. I mean mostly 4K files can be played..
Sent from quite brutal hTc 10 ..

Downloaded the Transformers_extinction_Trailer_4K UHD, 10bit, from your site you provided and it played without any issues using mx player pro with the 1. 8.6 audio codec to play AC3.
VLC and Power DVD couldn't play it.

cannot play downloaded youtube 4k videos smoothly with mx player and default player !

hello all... i m facing a strange lag in my htc m9. currently running Viper one m9 4.3.0. but i have tested with stock rom also , that, i cannot play 4k videos smoothly which i'have downloaded from youtube. i moved that video to my device memory, then opened it with mx player. that video is only playable with mx's SW mode but veryyyyy slowly. both the HW/HW+ mode says "not supported" what can i do to play those 4k videos smoothly in my device? please..T.I.A.

The M9 have an 1080p display, so 4k videos, even 2k videos won't look better than 1080p videos...
You can download the videos at full hd resolution from youtube, you will save space too.

The problem is mxplayer. Because it is downscaling the video from 4k to 1080p on the fly via software it can only convert so much in so little time and that causes it to pause while it converts.
You will find that youtube servers do the bitrate at their end so even if the video says 4k, if you play it via the YouTube app you'll only get the max resolution that your device can handle, in this case 1080p as that is all your device can do.

shivadow said:
The problem is mxplayer. Because it is downscaling the video from 4k to 1080p on the fly via software it can only convert so much in so little time and that causes it to pause while it converts.
You will find that youtube servers do the bitrate at their end so even if the video says 4k, if you play it via the YouTube app you'll only get the max resolution that your device can handle, in this case 1080p as that is all your device can do.
Click to expand...
Click to collapse
What about vlc player?

It might work, it might not..