LinuxQuestions.org
Share your knowledge at the LQ Wiki.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices


Reply
  Search this Thread
Old 07-18-2014, 10:46 PM   #1
kaza
Member
 
Registered: Apr 2010
Distribution: FC17
Posts: 343

Rep: Reputation: 2
MP4 files: pixelated with VLC, OK with other players


Hello!

I'm in a process of capturing old VCR tapes contents to a PC using a
tuner card and VLC. At first I produced MP2 files (an attempt to go
straight to MP4 encoded with H.264 resulted in high CPU usage and
dropped frames) and then started converting them to MP4 and coded with
H.264 to reduce files size. When I opened the resulting MP4 file with VLC
(2.0.10, under FC19+KDE on AMD Phenom X4, 2+ GHz with graphic card:
ATI FireGL V5600) I saw huge pixelation making the movie unviewable.
The average CPU usage on 4 cores was about 13%. Then I attempted to open
the same file with "totem" and "dragon player" - and there was no
pixelation (and CPU usage was slightly lower, about 8%).

Googling for this problem I saw many issues around 2010-2012 but nothing
recent. And the suggestions I've read (line changing the setting of
"Skip H.264 in-loop deblocking filter" from "none" to "all"
or altering the x264 profile from "high" to "baseline") didn't help.
The setting "Use GPU accelerated decoding" is "ON".

What can cause this behavior?
Did I forget some setting?

TIA for any ideas,
kaza.
 
Old 07-19-2014, 07:34 PM   #2
ondoho
LQ Addict
 
Registered: Dec 2013
Posts: 19,872
Blog Entries: 12

Rep: Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053Reputation: 6053
Quote:
Originally Posted by kaza View Post
Googling for this problem I saw many issues around 2010-2012 but nothing
recent.
and what is wrong with 2012?

just to clarify, has this worked before?


vlc is very powerful but, tbh, for me it's just too much.
a few years ago i managed to transcode a few dvd movies (raw video data, basically) into high quality compressed mp4's. i tried with vlc first, but quickly realized that i have to use some dedicated ripping app.
i think your best bet is to go a similar way: try to capture the data uncompressed, then transcode it to mp4 or sth else - some apps might even offer sane defaults for that.

still weird that it looks ok on totem, but not on vlc.
maybe during the capturing process you messed up some of vlc's settings?
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
VLC DVD playback pixelated baronobeefdip Linux - Software 6 09-22-2013 01:48 PM
[SOLVED] VLC can not play mp4 in Slackware 14.0 mshlinux Linux - Newbie 3 04-12-2013 01:40 AM
Streaming mp4 (with h264) via Debain server with VLC shorto Linux - Server 1 09-20-2011 09:50 PM
not able to play mp3 files and install vlc & mp3 players in fedora 8 harit agarwal Linux - Software 5 12-22-2008 04:50 PM
Ogg Vorbis support of Chinese Mp4 players hansalfredche Linux - Hardware 2 03-26-2007 04:44 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Software

All times are GMT -5. The time now is 07:17 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration