problems decoding h264 file

Message

TheCoop · Post by **TheCoop** » Mon Apr 09, 2007 7:27 pm

I've in the middle of copying my movie collection onto hard disk, and on some movies something goes wrong while encoding/decoding the video. When playing the files, around halfway through the movie the image goes crazy and I get the following in xterm:

mplayer:
[h264 @ 0xc4f520]warning: first frame is no keyframe
[h264 @ 0xc4f520]AVC: nal size 15390048
[h264 @ 0xc4f520]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0xc4f520]AVC: nal size 13600
[h264 @ 0xc4f520]no frame!
Error while decoding frame!
[h264 @ 0xc4f520]AVC: nal size 13600
[h264 @ 0xc4f520]no frame!
Error while decoding frame!
[h264 @ 0xc4f520]AVC: nal size 13600
[h264 @ 0xc4f520]no frame!
Error while decoding frame!
[h264 @ 0xc4f520]AVC: nal size 13600
[h264 @ 0xc4f520]no frame!
Error while decoding frame!
[h264 @ 0xc4f520]AVC: nal size 13600
[h264 @ 0xc4f520]no frame!
...etc

ffplay:
[h264 @ 0x2b3d335a8410]AVC: Consumed only 37086 bytes instead of 15390048
[h264 @ 0x2b3d335a8410]Unknown NAL code: 26
[h264 @ 0x2b3d335a8410]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0x2b3d335a8410]AVC: Consumed only 8293 bytes instead of 15390048
[h264 @ 0x2b3d335a8410]Unknown NAL code: 26
[h264 @ 0x2b3d335a8410]illegal short term buffer state detected
[h264 @ 0x2b3d335a8410]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0x2b3d335a8410]AVC: Consumed only 9490 bytes instead of 13600
[h264 @ 0x2b3d335a8410]illegal short term buffer state detected
[h264 @ 0x2b3d335a8410]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0x2b3d335a8410]AVC: Consumed only 4817 bytes instead of 15390048
[h264 @ 0x2b3d335a8410]Unknown NAL code: 26
[h264 @ 0x2b3d335a8410]illegal short term buffer state detected
[h264 @ 0x2b3d335a8410]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0x2b3d335a8410]AVC: Consumed only 8387 bytes instead of 13600
[h264 @ 0x2b3d335a8410]illegal short term buffer state detected
[h264 @ 0x2b3d335a8410]concealing 531 DC, 531 AC, 531 MV errors
[h264 @ 0x2b3d335a8410]AVC: Consumed only 2922 bytes instead of 15390048
....etc

has anyone got any idea whats going on? is it something wrong with the encoding or decoding?

ttuegel · Post by **ttuegel** » Mon Apr 09, 2007 8:07 pm

When was the last time you updated x264-svn? If not recently, I would recommend trying that to rule out a decoding issue (the svn-ebuild is the only one in Portage, and it's reasonably stable anyway, never had any issues with it).

TheCoop · Post by **TheCoop** » Tue Apr 10, 2007 11:42 am

updating to newest version didnt make a difference

TheCoop · Post by **TheCoop** » Tue Apr 10, 2007 11:53 am

And I can't encode with the newest version:

Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
[swscaler @ 0xb95480]SwScaler: using unscaled yuv420p -> yuv420p special converter
x264 [error]: width or height not divisible by 2 (576x1)
x264_encoder_open failed.
FATAL: Cannot initialize video driver.

ttuegel · Post by **ttuegel** » Tue Apr 10, 2007 12:00 pm

TheCoop wrote:And I can't encode with the newest version:

Do you have x264-svn and x264-svn-encoder installed? They separated the enconding/decoding libraries into two ebuilds.

TheCoop · Post by **TheCoop** » Tue Apr 10, 2007 2:28 pm

I'm using mencoder, which just has a dependancy on the .so library (which x264-svn provides...)

ttuegel · Post by **ttuegel** » Tue Apr 10, 2007 2:39 pm

TheCoop wrote:I'm using mencoder, which just has a dependancy on the .so library (which x264-svn provides...)

Regardless of what it _says_ the dependencies are, have you tried installing x264-svn-encoder? Otherwise, I'm not sure how mencoder is going to encode something in a format that it doesn't have the encoder for...

TheCoop · Post by **TheCoop** » Tue Apr 10, 2007 2:50 pm

x264-svn-encoder has a program that does stand-alone programming. It links against the library in x264-svn that mencoder also links against, that both mencoder and x264 (program) use to encode stuff. I've had a look, and the x264 program takes raw input - since I'm encoding dvds, the size of the raw input would be prohibitively large...

ttuegel · Post by **ttuegel** » Tue Apr 10, 2007 4:30 pm

That's strange... I've been using transcode to encode DVDs into H264 with ffmpeg, but it doesn't work without x264-svn-encoder installed (complains about being unable to load a library). I thought that mplayer used ffmpeg where available? Or am I thinking of something else?

In any case, with reference to the original problem, it sounds like the original files weren't encoded correctly, if the latest x264-svn doesn't play them.

meson_ray · Post by **meson_ray** » Thu May 31, 2007 3:49 pm

TheCoop wrote:And I can't encode with the newest version:

Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
[swscaler @ 0xb95480]SwScaler: using unscaled yuv420p -> yuv420p special converter
x264 [error]: width or height not divisible by 2 (576x1)
x264_encoder_open failed.
FATAL: Cannot initialize video driver.

I've got a similar problem with the newest version 20070325 (masked ~x86), which worked fine on the first DVD I tried encoding, but not the second one so far:

[swscaler @ 0x8600508]SwScaler: BICUBIC scaler, from yuv420p to yuv420p using MMX2
[swscaler @ 0x8600508]SwScaler: using 4-tap MMX scaler for horizontal luminance scaling
[swscaler @ 0x8600508]SwScaler: using 4-tap MMX scaler for horizontal chrominance scaling
[swscaler @ 0x8600508]SwScaler: using n-tap MMX scaler for vertical scaling (YV12 like)
[swscaler @ 0x8600508]SwScaler: 720x480 -> 752x320
x264 [error]: width or height not divisible by 2 (320x1)

I don't really know what to tell you about the other problem though, just to say that you're not alone in problems with the newer driver.

fsteinel · Post by **fsteinel** » Sat Jun 02, 2007 9:10 pm

Update to ftp://ftp.videolan.org/pub/videolan/x26 ... 45.tar.bz2 and remerge mplayer.
x264-svn-20070601.ebuild:

Code: Select all

--- /usr/portage/media-libs/x264-svn/x264-svn-20070325.ebuild   2007-03-25 21:38:52.000000000 +0200
+++ /usr/portage/media-libs/x264-svn/x264-svn-20070601.ebuild   2007-06-02 23:05:31.000000000 +0200
@@ -8,7 +8,7 @@ IUSE="debug threads"
 
 DESCRIPTION="A free library for encoding X264/AVC streams."
 HOMEPAGE="http://developers.videolan.org/x264.html"
-SRC_URI="mirror://gentoo/${P}.tar.bz2"
+SRC_URI="mirror://gentoo/${P/svn/snapshot}-2245.tar.bz2"
 
 SLOT="0"
 LICENSE="GPL-2"
@@ -21,7 +21,7 @@ DEPEND="${RDEPEND}
        x86? ( dev-lang/nasm )
        x86-fbsd? ( dev-lang/nasm )"
 
-S="${WORKDIR}/${PN}"
+S="${WORKDIR}/${P/svn/snapshot}-2245"
 
 src_unpack() {
        unpack ${A}

x264-svn-encoder-20070601.ebuild:

Code: Select all

--- /usr/portage/media-video/x264-svn-encoder/x264-svn-encoder-20070325.ebuild  2007-03-25 21:40:48.000000000 +0200
+++ /usr/portage/media-video/x264-svn-encoder/x264-svn-encoder-20070601.ebuild  2007-06-02 22:06:33.000000000 +0200
@@ -6,7 +6,8 @@ inherit multilib eutils toolchain-funcs
 
 IUSE="debug mp4 gtk threads"
 
-X264_SVN_P=${P/-encoder/}
+X264_SVN_P1=${P/-encoder/}
+X264_SVN_P=${X264_SVN_P1/svn/snapshot}-2245
 
 DESCRIPTION="A free library for encoding X264/AVC streams."
 HOMEPAGE="http://developers.videolan.org/x264.html"
@@ -18,20 +19,20 @@ KEYWORDS="~alpha ~amd64 ~ppc ~ppc64 ~spa
 
 RDEPEND="mp4? ( >=media-video/gpac-0.4.1_pre20060122 )
        gtk? ( >=x11-libs/gtk+-2.6.10 >=dev-libs/glib-2.10.3 )
-       ~media-libs/${X264_SVN_P}"
+       ~media-libs/${X264_SVN_P1}"
 
 DEPEND="${RDEPEND}
        amd64? ( >=dev-lang/yasm-0.6.0 )
        x86? ( dev-lang/nasm )
        x86-fbsd? ( dev-lang/nasm )"
 
-S=${WORKDIR}/${PN/-encoder/}
+S=${WORKDIR}/${X264_SVN_P}
 
 src_unpack() {
        unpack ${A}
        cd "${S}"
        epatch "${FILESDIR}/${P}-nostrip.patch"
-       epatch "${FILESDIR}/${P}-nolib.patch"
+       epatch "${FILESDIR}/${PN}-20070325-nolib.patch"
 }
 
 src_compile() {

x264-svn-encoder-20070601-nostrip.patch

Code: Select all

--- x264-snapshot-20070601-2245/configure.orig  2007-06-01 22:45:02.000000000 +0200
+++ x264-snapshot-20070601-2245/configure       2007-06-02 21:44:13.000000000 +0200
@@ -375,11 +375,6 @@ if [ "$pic" = "yes" ] ; then
     ASFLAGS="$ASFLAGS -D__PIC__"
 fi
 
-if [ "$debug" != "yes" -a "$gprof" != "yes" ]; then
-    CFLAGS="$CFLAGS -s -fomit-frame-pointer"
-    LDFLAGS="$LDFLAGS -s"
-fi
-
 if [ "$debug" = "yes" ]; then
     CFLAGS="-O1 -g $CFLAGS"
 else