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| 4N4 |
| Posted: May 20 2012, 06:39 PM |
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Advanced Member
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I have been using VirutalDub to convert some VP6F+96kbpsMP3 .FLV files to XviD+128kbpsMP3 .AVI files, with resize from 960x544 to 720x408.
The first job completes quickly, but subsequent jobs complete much, much slower. If I restart VirtualDub, the first job completes quickly again, but then subsequent jobs complete painfully slow.
Not sure if this is a VirtualDub issue or codec issue, but it's reproducible every time.
Definitely happens with 1.10.1 and 1.10.2, and am just double-checking with 1.9.11 |
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| 4N4 |
| Posted: May 20 2012, 10:18 PM |
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I am using Xvid 1.3.2, Jawor's patched build (http://jawormat.republika.pl/xvid.html), although the problem also occurred with the vanilla 1.3.2 XviD codec.
Confirmed issue also exists with 1.9.11 stable. For example, first job completed in 47 minutes, but a second different job has only reached 72% after 2 hours 48 minutes. On a quad core, CPU usage for VirtualDub was approx. 70% for 1st job, while 2nd job is only approx 31%. The slowdown makes the batch processing feature unusable.
I have also noticed a slowdown for all dubs if I launch multiple instances of VirtualDub - one for each job. For example, jobs that usually take no longer than approx 1 hour, end up taking 6+ hours with four instances of VirtualDub. |
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| phaeron |
| Posted: May 27 2012, 09:10 PM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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What happens if you run the jobs one-by-one? You might try running one job, clearing the video codec setting, and then running the next job. If you can reproduce it on demand on the second job then we can try some interactive debugging, like the on-screen profiler.
Oh, also... any difference in the Performance tab of the status window? You can enable this during a batch run even if it isn't enabled when the job starts. In particular, there are counters displayed there that indicate whether the I/O and/or the processing pipelines are backed up. For a job like this I would expect the audio/video buffer pipes to be full and the processing thread to be constantly busy.
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| 4N4 |
| Posted: May 30 2012, 12:56 PM |
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| QUOTE (phaeron @ May 27 2012, 09:10 PM) | | You might try running one job, clearing the video codec setting, and then running the next job. |
How do you clear the video codec setting after the first job has run ? |
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| 4N4 |
| Posted: May 30 2012, 07:09 PM |
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| QUOTE (phaeron @ May 27 2012, 09:10 PM) | | Oh, also... any difference in the Performance tab of the status window? You can enable this during a batch run even if it isn't enabled when the job starts. In particular, there are counters displayed there that indicate whether the I/O and/or the processing pipelines are backed up. For a job like this I would expect the audio/video buffer pipes to be full and the processing thread to be constantly busy. |
Perf counters show Audio and video buffers are full for both jobs
Audio buffer 64/64KB
Video buffer 31 or 32/32
Video frame requests = 0 or 1 (mainly 0)
I/O thread activity: 1 or 2%
Processing thread activity: 100%
CPU usage in Task manager for VirtualDub.exe starts at approx. 40% at beginning of first job, which drops to approx. 28-30% at end. CPU usage for second job seems to stay constant at around 30% (although the 2nd job is currently running now and is at 34% complete). |
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| phaeron |
| Posted: Jun 2 2012, 09:37 PM |
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Virtualdub Developer
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Yeah, like I thought it isn't I/O or audio.
You can clear the video codec by choosing [Uncompressed] or [No Recompression] from the Video | Compression menu option. This unloads the last video codec used, which might clear any carry-over effects.
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| 4N4 |
| Posted: Jun 4 2012, 06:14 PM |
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Advanced Member
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| QUOTE (phaeron @ May 27 2012, 09:10 PM) | | What happens if you run the jobs one-by-one? You might try running one job, clearing the video codec setting, and then running the next job. If you can reproduce it on demand on the second job then we can try some interactive debugging, like the on-screen profiler. |
I'm running the second job now after clearing the video codec (all I did was choose Uncompressed from Compression dialog and clicked OK, then reloaded processing settings), and it looks like the second job is going to take much longer than the first job.
The first job starts off at approx. 40% CPU usage, while 2nd job starts at approx. 30%. I/O counter for 1st job starts at approx. 5%, while 2nd job is approx. 1-2%.
Prefs-Threading option are at default settings, although I tried setting Video compression threads to 1 but the problem still existed. |
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| 4N4 |
| Posted: Jun 4 2012, 06:15 PM |
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I am running tests on latest 1.10.2 x86 on Win 7 x64 |
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| 4N4 |
| Posted: Jun 4 2012, 11:56 PM |
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| QUOTE (4N4 @ Jun 4 2012, 06:14 PM) | | I'm running the second job now after clearing the video codec (all I did was choose Uncompressed from Compression dialog and clicked OK, then reloaded processing settings), and it looks like the second job is going to take much longer than the first job. |
1st job took 1 hour 11 mins
2nd job took 4 hours 29 mins
Both jobs were using same input file, same processing settings, but obviously different output filenames. |
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| 4N4 |
| Posted: Jun 5 2012, 12:49 AM |
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I have tried to reproduce on shorter clips (eg. 30MB 3 minute, as opposed to 800MB 1 hour 20 minute), but am unable to.
If you want to try to reproduce the problem, you can get the VP6F .FLV files via RTMP: protocol from http://premiershiprugby.tv, although you will probably need to be in the UK or use a UK proxy. The problem files are the full games, rather than highlights.
Processing settings being used (as listed in .vdscript)
Edited: Feel free to truncate the VirtualDub.video.SetCompData line once you have the data, as it's interfering with forum layout in this topic by not word-wrapping.
| CODE |
VirtualDub.audio.SetSource(1);
VirtualDub.audio.SetMode(1);
VirtualDub.audio.SetInterleave(1,500,1,0,0);
VirtualDub.audio.SetClipMode(1,1);
VirtualDub.audio.SetConversion(0,0,0,0,0);
VirtualDub.audio.SetVolume();
VirtualDub.audio.SetCompressionWithHint(85,44100,2,0,16000,1,12,"AQAEAAAAoQEBAAAA","LAME MP3");
VirtualDub.audio.EnableFilterGraph(0);
VirtualDub.video.SetInputFormat(0);
VirtualDub.video.SetOutputFormat(7);
VirtualDub.video.SetMode(3);
VirtualDub.video.SetSmartRendering(0);
VirtualDub.video.SetPreserveEmptyFrames(0);
VirtualDub.video.SetFrameRate2(0,0,1);
VirtualDub.video.SetTargetFrameRate(250000,10000);
VirtualDub.video.SetIVTC(0, 0, 0, 0);
VirtualDub.video.SetCompression(0x64697678,0,10000,0);
VirtualDub.video.SetCompData(10440,"AAAAALwCAACQsggALlx2aWRlby5wYXNzAAAuAHAAYQBzAHMAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAkAEAAEdlbmVyaWMgU3RhbmRhbG9uZQAAYQBuAGQAYQBsAG8AbgBlAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAChVc2VyIGRlZmluZWQpAABmAGkAbgBlAGQAKQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAAIERITFRcZGxESExUXGRscFBUWFxgaHB4VFhcYGhweIBYXGBocHiAjFxgaHB4gIyYZGhweICMmKRscHiAjJiktEBESExQVFhcREhMUFRYXGBITFBUWFxgZExQVFhcYGhsUFRYXGRobHBUWFxgaGxweFhcYGhscHh8XGBkbHB4fIQAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAEAAACWAAAAZAAAAAAAAAABAAAAAAAAAAQAAAADAAAAAQAAAAEAAAAAAAAAAAAwAPAQSgAAEnoAAQAAAAAAAAAAAAAAAAAAAGQAAAD0AQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA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VirtualDub.video.filters.Clear();
VirtualDub.video.filters.Add("resize");
VirtualDub.video.filters.instance[0].Config(720,408,0,4,3,1,320,240,4,3,0,4,4,0x000000);
VirtualDub.audio.filters.Clear();
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| -vdub- |
| Posted: Jun 11 2012, 12:45 PM |
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Advanced Member
Group: Members
Posts: 613
Member No.: 27087
Joined: 24-February 10
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Instead of using a Code box, does a Quote box work better ! |
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| 4N4 |
| Posted: Jun 12 2012, 12:03 AM |
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Advanced Member
Group: Members
Posts: 31
Member No.: 34901
Joined: 20-May 12
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The reason for using a code box over a quote box, is that a code box will display the text verbatim, whereas text in a quote box can have characters stripped out (eg. if they appear to be part of a tag). At least that's the way I understand how it works. |
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| 4N4 |
| Posted: Jun 12 2012, 12:06 AM |
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Advanced Member
Group: Members
Posts: 31
Member No.: 34901
Joined: 20-May 12
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Just tested with a quote box and although it doesn't strip out any of the characters (at least in my sample .vdscript), it still doesn't format properly so I've switched back to code box. |
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| -vdub- |
| Posted: Jun 14 2012, 12:35 PM |
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Advanced Member
Group: Members
Posts: 613
Member No.: 27087
Joined: 24-February 10
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I just noticed this forum is different for this than other forums. Where if place any oversize text in a quote box it won't truncate also. Instead the quote box will have windows guides so the forum doesn't expand as happened here.
A forum back end setting needs changing, if there is a setting for it with the Invision Power Board v1.1.2 settings ! |
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| phaeron |
| Posted: Jun 17 2012, 10:06 PM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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I'll try hacking the forum stylesheets to see if I can force a wrap. It's probably using a PRE tag for CODE and there are a series of CSS3 and browser specific force wrap modes that might work for this.
Anyway, back to the topic at hand....
I think at this point we might need more instrumentation within VirtualDub itself to track this down. In the meantime, if you're adventurous and still willing to track this down, the real-time profiler is probably the best bet. It takes a bit getting used to, but it will show you exactly which parts of the pipeline are taking time. Mouse wheel, arrow keys, and Alt+left-drag are used to navigate it.
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