Bug#530016: [ffmpeg] qtrle 1:1 conversation creates bigger files

[Reinhard Tartler]

severity 530016 minor
tags 530016 upstream
stop

Resul Cetin <Resul-Cetin at gmx.net> writes:

> Package: ffmpeg
> Version: 4:0.5+svn20090420-2
> Severity: normal
>
> Hi,
> i created a screencast using different tools and noticed that ffmpegs qtrle
> produces real huges files. This seems to be also a problem when reencoding
> qtrle files produced by ffmpeg to qtrle again. As example I created a small
> cast. It uses 0,6MiB in space and after the 1:1 conversation it uses
> 22MiB. This is quite bad because their shouldn't be any difference.
>
> $ ffmpeg -r 10 -g 300 -s 1024x768x16 -f x11grab -i :0.0 -vcodec qtrle ~/Desktop/test1.mov
> FFmpeg version SVN-r18630-4:0.5+svn20090420-2, Copyright (c) 2000-2009 Fabrice Bellard, et al.
>   configuration: --disable-encoder=h263 --disable-encoder=h263p
> --disable-encoder=mpeg2video --disable-encoder=mpeg4
> --disable-encoder=msmpeg4v1 --disable-encoder=msmpeg4v2
> --disable-encoder=msmpeg4v3 --extra-version=4:0.5+svn20090420-2
> --prefix=/usr --enable-avfilter --enable-avfilter- lavf
> --enable-libgsm --enable-libschroedinger --enable-libspeex
> --enable-libtheora --enable-libvorbis --enable-pthreads
> --disable-stripping -- disable-vhook --enable-gpl --enable-postproc
> --enable-swscale --enable-x11grab --enable-libfaad --enable-libdc1394
> --enable-shared --disable-static
>   libavutil     49.15. 0 / 49.15. 0
>   libavcodec    52.20. 0 / 52.20. 0
>   libavformat   52.31. 0 / 52.31. 0
>   libavdevice   52. 1. 0 / 52. 1. 0
>   libavfilter    0. 4. 0 /  0. 4. 0
>   libswscale     0. 7. 1 /  0. 7. 1
>   libpostproc   51. 2. 0 / 51. 2. 0
>   built on May  8 2009 06:31:25, gcc: 4.3.3

Can you please try building ffmpeg from trunk and try with that? If the
problem there still persists, please file a bug upstream according to
the ffmpeg bug filing suggestions: 

http://ffmpeg.org/bugreports.html

Unfortunately I don't know enough about the qtrle encoder to debug/fix
this for you.

-- 
Gruesse/greetings,
Reinhard Tartler, KeyID 945348A4