Opened 4 years ago

Last modified 10 months ago

#3289 open enhancement

support L264 without "Lead Extension"

Reported by: ami_stuff Owned by:
Priority: wish Component: undetermined
Version: git-master Keywords: h264
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no

Description

attached file is compressed with disabled "Lead Extension" (see screenshot) and decodes correctly with "VSS H.264" vfw codec (when I modify FourCC to VSSH), so I belive it should be easy to support it with FFmpeg

http://www.datafilehost.com/d/cf66ba07

C:\>ffmpeg -i l264_1.avi
ffmpeg version N-59696-gc0a33c4 Copyright (c) 2000-2014 the FFmpeg developers
  built on Jan  8 2014 22:01:50 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  libavutil      52. 62.100 / 52. 62.100
  libavcodec     55. 47.100 / 55. 47.100
  libavformat    55. 22.102 / 55. 22.102
  libavdevice    55.  5.102 / 55.  5.102
  libavfilter     4.  0.103 /  4.  0.103
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 17.104 /  0. 17.104
  libpostproc    52.  3.100 / 52.  3.100
[avi @ 02b9a5a0] non-interleaved AVI
[avi @ 02b9a5a0] Could not find codec parameters for stream 1 (Video: none (L264
 / 0x3436324C), 352x244): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, avi, from 'l264_1.avi':
  Duration: 00:00:04.13, start: 0.000000, bitrate: 17046 kb/s
    Stream #0:0: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 44100 Hz, stereo
, s16p, 352 kb/s
    Stream #0:1: Video: none (L264 / 0x3436324C), 352x244, 30 fps, 30 tbr, 30 tb
n, 30 tbc
At least one output file must be specified

Attachments (3)

l264_1.jpg (82.6 KB) - added by ami_stuff 4 years ago.
l264_cavlc_qualityfactor_28.7z (2.2 MB) - added by ami_stuff 20 months ago.
l264_v1_cavlc_qualityfactor_28.avi (658.0 KB) - added by ami_stuff 20 months ago.

Change History (15)

Changed 4 years ago by ami_stuff

comment:1 Changed 4 years ago by cehoyos

  • Keywords h264 added
  • Priority changed from normal to wish
  • Reproduced by developer set
  • Status changed from new to open
  • Type changed from defect to enhancement
  • Version changed from unspecified to git-master

comment:2 Changed 22 months ago by ami_stuff

with this version of codec:

https://web.archive.org/web/20040723075036/http://www.videosoftinc.com/pub/vssh3dec.exe

wmp crashes while decoding l264 file here

but when I repleace "vsshdsd.dll" file with file from:

https://www.mplayerhq.hu/MPlayer/releases/codecs/essential-20061022.tar.bz2

then l264 file decodes correctly (there are some small artefacts)

also this sample decodes correctly with vss codec as well:

https://samples.mplayerhq.hu/V-codecs/L264.avi

comment:3 Changed 22 months ago by ami_stuff

so this time I downloaded mpegable codec:

http://www.softpedia.com/get/Multimedia/Video/Codec-Packs-Video-Codecs/mpegable-AVC.shtml

changed "L264" FourCC in my sample (l264_1.avi) to "DAVC" and it decodes correctly

comment:4 follow-up: Changed 22 months ago by ami_stuff

here is dll alone, maybe could be used with mplayer for testing purposes

http://www.datafilehost.com/d/eaad9a27

comment:5 Changed 22 months ago by ami_stuff

see also ticket #5275 (mpegable codec decodes correctly "l264_1.avi" sample) - maybe fixing it will fix this ticket as well

comment:6 follow-up: Changed 22 months ago by ami_stuff

It looks like they produced non-standard files in v1 (1.0.0.28) version of their encoder (2005) and this got fixed in version v2 (1.0.0.35) (2006).

http://www.datafilehost.com/d/af32e327

Here are more V1 samples:

https://web.archive.org/web/20050203212612/http://leadcodecs.com/Download/H264-Videos.htm

(FFmpeg's demuxer doesn't like "Careless Whisper" and "Limerick" files)

Last edited 22 months ago by ami_stuff (previous) (diff)

comment:7 in reply to: ↑ 6 Changed 21 months ago by ami_stuff

Replying to ami_stuff:

It looks like they produced non-standard files in v1 (1.0.0.28) version of their encoder (2005) and this got fixed in version v2 (1.0.0.35) (2006).

http://www.datafilehost.com/d/af32e327

Here are more V1 samples:

https://web.archive.org/web/20050203212612/http://leadcodecs.com/Download/H264-Videos.htm

This open source decoder plays (almost correctly) Lead H264 v1 file:

https://web.archive.org/web/20060101123100/http://www-user.tu-chemnitz.de/~mfie/stuff/SA/

ffmpeg -i l264_v1.avi -vcodec copy l264_v1.264
ffmpeg -i l264_v2.avi -vcodec copy l264_v2.264

playh264 l264_[v1/v2].264

"Minimal H.264 decoder (by Martin Fiedler)
OPEN SOURCE. Basic decoder.
http://keyj.s2000.ws/?page_id=41"

http://forum.doom9.org/showthread.php?t=95939

comment:8 Changed 21 months ago by ami_stuff

l264_v1:

H.264 stream: 320x240, zooming to 320x240
Hint: [Space] toggles pause; [Enter] advances to next frame

Frame   1: I-Slice
Frame   2: P-Slice
Frame   3: P-Slice
Frame   4: P-Slice
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Decoding done.

l264_v2:

H.264 stream: 320x240, zooming to 320x240
Hint: [Space] toggles pause; [Enter] advances to next frame

Frame   1: I-Slice
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Decoding done.

Changed 20 months ago by ami_stuff

comment:9 follow-up: Changed 20 months ago by ami_stuff

attached sample (v1 encoder) decodes (with artefacts) with:

mplayer -vc vssh264 -ao null -nosound l264_cavlc_qualityfactor_28.avi

and

ffmpeg -i l264_cavlc_qualityfactor_28.avi -vcodec copy out.h264

playh264 out.h264

so I would suggest to find out in which algo they made a mistake and support this crap

Last edited 20 months ago by ami_stuff (previous) (diff)

Changed 20 months ago by ami_stuff

comment:10 in reply to: ↑ 9 Changed 20 months ago by ami_stuff

Replying to ami_stuff:

attached sample (v1 encoder) decodes (with artefacts) with:

mplayer -vc vssh264 -ao null -nosound l264_cavlc_qualityfactor_28.avi

and

ffmpeg -i l264_cavlc_qualityfactor_28.avi -vcodec copy out.h264

playh264 out.h264

so I would suggest to find out in which algo they made a mistake and support this crap

It was actually file encoded by encoder V2, so just ignore this comment.

I attached file encoded with encoder V1 (l264_v1_cavlc_qualityfactor_28.avi​)- plays with artefacts with:

ffmpeg -vcodec h264 -i l264_v1_cavlc_qualityfactor_28.avi​ -vcodec copy out.h264

playh264 out.h264

mplayer + vssh codec crashes.

Last edited 20 months ago by ami_stuff (previous) (diff)

comment:11 in reply to: ↑ 4 ; follow-up: Changed 10 months ago by compn

Replying to ami_stuff:

here is dll alone, maybe could be used with mplayer for testing purposes

http://www.datafilehost.com/d/eaad9a27

did you add it to mplayer? whats the codecs.conf entry for it? i keep getting decompression errors...

comment:12 in reply to: ↑ 11 Changed 10 months ago by ami_stuff

Replying to compn:

Replying to ami_stuff:

here is dll alone, maybe could be used with mplayer for testing purposes

http://www.datafilehost.com/d/eaad9a27

did you add it to mplayer? whats the codecs.conf entry for it? i keep getting decompression errors...

IIRC it didn't work with mplayer here.

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