Opened 12 years ago
Closed 7 years ago
#1536 closed defect (fixed)
u263: problem with b-frames
Reported by: | ami_stuff | Owned by: | |
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Priority: | normal | Component: | avcodec |
Version: | git-master | Keywords: | u263 |
Cc: | Michael Niedermayer | Blocked By: | |
Blocking: | Reproduced by developer: | yes | |
Analyzed by developer: | no |
Description
u263 codec have a possibility to encode video with enabled b-frames (1-5), ffmpeg decodes such files incorrectly.
$ ffmpeg -i u263_b-frames_5.avi out.avi ffmpeg version 0.10.2.git-ab7d6cb Copyright (c) 2000-2012 the FFmpeg developers built on May 30 2012 13:37:47 with gcc 4.6.1 configuration: --disable-ffprobe --enable-gpl libavutil 51. 55.100 / 51. 55.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.101 / 54. 6.101 libavdevice 54. 0.100 / 54. 0.100 libavfilter 2. 77.100 / 2. 77.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [h263 @ 0189c720] Warning: not compiled with thread support, using thread emulat ion Input #0, avi, from 'u263_b-frames_5.avi': Duration: 00:00:12.64, start: 0.000000, bitrate: 403 kb/s Stream #0:0: Video: h263 (U263 / 0x33363255), yuv420p, 320x240, 23.97 tbr, 2 3.97 tbn, 23.97 tbc w:320 h:240 pixfmt:yuv420p tb:100/2397 sar:0/1 sws_param:flags=2 [buffersink @ 018a23c0] No opaque field provided [mpeg4 @ 01898e40] Warning: not compiled with thread support, using thread emula tion [h263 @ 0189c720] Warning: not compiled with thread support, using thread emulat ion Output #0, avi, to 'out.avi': Metadata: ISFT : Lavf54.6.101 Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x240, q=2-31, 200 kb/s, 23.97 tbn, 23.97 tbc Stream mapping: Stream #0:0 -> #0:0 (h263 -> mpeg4) Press [q] to stop, [?] for help [h263 @ 0189c720] illegal ac vlc code at 0x3 [h263 @ 0189c720] Error at MB: 63 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] illegal ac vlc code at 12x0 [h263 @ 0189c720] Error at MB: 12 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] illegal ac vlc code at 17x5 [h263 @ 0189c720] Error at MB: 122 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] b cbpy damaged at 19 5 [h263 @ 0189c720] Error at MB: 124 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] run overflow at 13x0 i:0 [h263 @ 0189c720] Error at MB: 13 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] b mb_type damaged at 18 3 [h263 @ 0189c720] Error at MB: 81 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] illegal ac vlc code at 19x3 [h263 @ 0189c720] Error at MB: 82 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] b mb_type damaged at 5 2 [h263 @ 0189c720] Error at MB: 47 [cut] [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] b mb_type damaged at 16 0 [h263 @ 0189c720] Error at MB: 16 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors frame= 296 fps= 74 q=5.1 size= 467kB time=00:00:12.55 bitrate= 304.7kbits/s illegal ac vlc code at 13x0 [h263 @ 0189c720] Error at MB: 13 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors [h263 @ 0189c720] b mb_type damaged at 17 1 [h263 @ 0189c720] Error at MB: 38 [h263 @ 0189c720] concealing 300 DC, 300 AC, 300 MV errors frame= 298 fps= 74 q=5.2 Lsize= 474kB time=00:00:12.64 bitrate= 306.9kbits/ s video:461kB audio:0kB global headers:0kB muxing overhead 2.776824%
Attachments (3)
Change History (13)
by , 12 years ago
by , 12 years ago
Attachment: | u263_b-frames_1.avi added |
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by , 12 years ago
Attachment: | u263_b-frames_5.avi added |
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comment:1 by , 12 years ago
Component: | undetermined → avcodec |
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Keywords: | u263 added |
Reproduced by developer: | set |
Status: | new → open |
Version: | unspecified → git-master |
comment:2 by , 7 years ago
comment:3 by , 7 years ago
attached files decodes correctly with lead decoder (after changing FourCC to L263)
https://www.leadtools.com/help/leadtools/v19/multimedia/filters/leadh263decoder(2.0).html
https://www.leadtools.com/help/leadtools/v19/multimedia/filters/leadh263videocodecmodule.html
comment:4 by , 7 years ago
Ive added some fixes, can you confirm that the 5b frme file still looks periodically worse than other decoders acheive ? Iam asking as iam not sure this is a bug or its supposed to look like that
follow-up: 7 comment:5 by , 7 years ago
Thanks for trying to fix this. Here is the output from lead decoder (from "u263_b-frames_5.avi" file) :
https://oldbrowser.files.fm/u/4a9pkwdx
IMHO there is still something wrong. Unfortunately I don't have original decoder anymore to compare (u263).
comment:7 by , 7 years ago
comment:8 by , 7 years ago
No, wrong colors are not related to avilzlib. It's just how lead decoder decodes u263 file.
comment:9 by , 7 years ago
Cc: | added |
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comment:10 by , 7 years ago
Resolution: | → fixed |
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Status: | open → closed |
https://web.archive.org/web/20040609221952/http://ubvideo.com/public/h263-white_paper.pdf