[FFmpeg-devel] [PATCH] Fix distortion problem in MPEG1/2 video

[compn]

On Sat, 17 Nov 2012 16:38:12 +0100, Reimar Döffinger wrote:
>On 17 Nov 2012, at 06:05, "Hee Suk Jung" <heesuk.jung at lge.com> wrote:
>> 
>> From b67e7001765b9008d1edf09e445f9dbd331c33a2 Mon Sep 17 00:00:00 2001
>> From: Heesuk Jung <heesuk.jung at lge.com>
>> Date: Sat, 17 Nov 2012 13:52:50 +0900
>> Subject: [PATCH] Fix distortion problem in MPEG1/2 video
>> 
>> In some MPEG1/2 AVI files, there are video distortion problem in bottom of screen.
>> (I just test files by ffplay)
>> 
>> 1. MPEG1 video problematic file link
>> - https://docs.google.com/open?id=0B6r7ZfWFIypCMkltZHJDY0pQN1U
>> 2. MPEG2 video problematic file link
>> - https://docs.google.com/open?id=0B6r7ZfWFIypCM0ZremxpbXc1N3c
>> 
>> Suggests to use AVSTREAM_PARSE_FULL option in prblematic cases.
>
>
>I believe those are clearly broken files. Are they common enough that we should support them despite the speed cost for good files?
>Otherwise I'd rather suggest to add an option to force full parsing + try to make the decoder detect this case and suggest that option.

as this only affects mpeg in avi, are you saying it slows down other
non-broken mpeg-in-avi files? if so, by how much?

-compn