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Hi,

i'm breaking my head about this xvid-playback issue so i finally started a thread about it.
Here's the problem (sorry about the bad picture quality):

This however doesn't happen all the time,it plays ok but then for a second or two i get the garbage images above and this repeats multiple times over the entire episode.

MediaInfo data:

Code:

General

Complete name                            : Z:\Torrent\family guy season3\Episode 302 - Brian Does Hollywood.avi

Format                                   : AVI

Format/Info                              : Audio Video Interleave

File size                                : 136 MiB

Duration                                 : 22mn 33s

Overall bit rate                         : 844 Kbps

Writing application                      : VirtualDubMod 1.5.1.1a (build 1639/release)

Writing library                          : VirtualDubMod build 1639/release

Video

ID                                       : 0

Format                                   : MPEG-4 Visual

Format profile                           : Advanced Simple@L3

Format settings, BVOP                    : No

Format settings, QPel                    : No

Format settings, GMC                     : 2 warppoints

Format settings, Matrix                  : Default (H.263)

Codec ID                                 : XVID

Codec ID/Hint                            : XviD

Duration                                 : 22mn 33s

Bit rate                                 : 643 Kbps

Width                                    : 640 pixels

Height                                   : 480 pixels

Display aspect ratio                     : 4:3

Frame rate                               : 23.976 fps

Color space                              : YUV

Chroma subsampling                       : 4:2:0

Bit depth                                : 8 bits

Scan type                                : Progressive

Compression mode                         : Lossy

Bits/(Pixel*Frame)                       : 0.087

Stream size                              : 104 MiB (76%)

Writing library                          : XviD 0.0.09 (UTC 2003-03-25)

Audio

ID                                       : 1

Format                                   : MPEG Audio

Format version                           : Version 1

Format profile                           : Layer 3

Mode                                     : Joint stereo

Mode extension                           : MS Stereo

Codec ID                                 : 55

Codec ID/Hint                            : MP3

Duration                                 : 22mn 33s

Bit rate mode                            : Constant

Bit rate                                 : 192 Kbps

Channel(s)                               : 2 channels

Sampling rate                            : 48.0 KHz

Compression mode                         : Lossy

Stream size                              : 31.0 MiB (23%)

Alignment                                : Split accross interleaves

Interleave, duration                     : 42 ms (1.00 video frame)

Interleave, preload duration             : 464 ms

The problem always occurs,upnp-,samba-,usb-source...it doesn't make any difference.
I'm on the latest xbian-build (RC2 compiled yesterday) but the previous version also had this problem.
I'm using a 128MB/128MB memorysplit.

Any ideas?

Greetz

Can you share a sample?

I would if i knew how to?
Since i have 0 experience with video editing i'm finding it pretty hard to cut a few seconds out of an episode and saving it to the excact same format...
I could upload the entire episode but this would probaly be illegal...

Edit:

i've sort of managed to cut a short piece and keep the codec.
There are a few repeat/skips in the sample,please ignore this.
The decoding issues are clearly visible.

sample.avi (7 MB)

Ive sent you a PM, so please response Wink

MPEG-4 updates the picture by chunks/blocks. It detects changes and tries to only update those. When your processor can't keep up with the updates, you tend to get what you displayed in your pictures.

If you can, try turning off the subtitles. In anime (especially) I have noticed that soft-coded subs (such as those in mpeg4/h264) cause all sorts of juddering and slow playback. Libass is not as "performant" as it could be, I guess.

My solution, until libass is sorted, is to convert the mpeg4's into divx's. The reason for this is, that the subtitle stream is then 'hard coded' into place, rather than inside another stream in the mkv/mp4/whatever.

The command I used on my linux machine to batch convert was; for files in *.mkv; do mencoder -o "${files%.mkv}.avi" -oac mp3lame -ovc xvid -ass -xvidencopts pass=1 "$files" &> "${files%.mkv}.translog"; done

Hopefully, I am wrong, but.. there is definitely something 'funky' with soft subtitles and the pi Sad

Well,it does happen mostly when the full screen has to get updated.
First i also thought it was caused by the lack of cpu-power,since mpeg4 isn't hardware accelerated,however when i ssh into the pi and run htop it shows around 50% cpu usage so there's plenty cpu power available.
My Soc is oc'd,the arm is doing 1050 Mhz,the core is running at 525 Mhz,the oc is stable,tested playing quake 3 in raspbian so this should also be ok.
I never use subtitles,and i've disabled them in the audio settings,no change..

thanks for the file to test it Wink

but I haven't find any way how to fix this issue, and it is really happening no matter what I've tried
Looks the RPi doesn't like this type of media file, for some reason.
And it is really easy file, so the RPi shouldn't have a prob to play it.
So I have no clue here. sorry m8

Thanks for looking into it any way.
I don't consider it as a big issue since 95% of my media plays fine.

Pihkal

Koenkk

Pihkal

rikardo1979

stelford

Pihkal

rikardo1979

Pihkal