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| shekh |
| Posted: Dec 10 2014, 06:53 PM |
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Fixed some crashes
Fixed frame rounding
Added duplicate frames where frame rate is non constant (for example Video2.WMV)
Fixed sound offset
Fixed noise in sound where sound stream is not sample accurate (for example "Sync Test 2.mkv")
Etc
Also changed memory management of big image buffers. Now can deal with much more memory. And example 3840*2160 H264, 500 frames in memory take around 6Gb, it works. Btw that video can decode at stunning 10fps on my pc, useful to extract some photos. |
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| shekh |
| Posted: Dec 10 2014, 06:56 PM |
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New issue:
fast recompress mode, analyze pass will crash.
Some investigation showed that fast recompress is a pile of problems, dont use it.
[edit]
And another one, almost forgot.
Tested xvid I-frame compressed 1280*960, and internal VD decoder can navigate it really fast. Dont know how to measure but it is really really fast. And ffmpeg is slow. But the "analyze pass" comparison shows that ffmpeg is 2x faster. Looks like ffmpeg here has a very stupid seeking method.
[edit]
fixed!
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| dloneranger |
| Posted: Dec 10 2014, 07:20 PM |
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Somethings seriously broken in this build
Vid analysis pass showed decoding as 1000+ fps, so i saved a file
The output file has many repeated frames and garbage ones that look like mixtures of two or more frames
[edit]
analysis pass at 1000fps seemed weird as it ffwd'd at about the same speed as the other plugin, and that one only analysed at about 100fps
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| shekh |
| Posted: Dec 10 2014, 07:49 PM |
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There is something that I need to check: thread safety.
Anyway for me it somehow works. Saved "Sync Test 1.mkv" as uncompressed, full processing mode. Looks ok.
Do you have video buffering set to what? Mine is 4 buffers. |
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| dloneranger |
| Posted: Dec 10 2014, 08:03 PM |
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I have most things set to non standard - it's easier to catch problems that way
Let's see
Video decoding mode is set to yuv420
Threading is set to compression threads=1, filtering=4, process ahead=4
buffering all at max
The problem also shows when playing
no motion when playing input
stop motion when playing output
Lowering the video buffers down to 4 gets it working, but that's a problematic solution
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| shekh |
| Posted: Dec 10 2014, 08:13 PM |
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Ok it is a known problem, I wrote before
Want to find good solution but it is not easy, because the entire caching idea violates the plugin api. |
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| shekh |
| Posted: Dec 13 2014, 03:08 PM |
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| QUOTE (shekh @ Dec 10 2014, 06:56 PM) | | Tested xvid I-frame compressed 1280*960, and internal VD decoder can navigate it really fast. Dont know how to measure but it is really really fast. And ffmpeg is slow. But the "analyze pass" comparison shows that ffmpeg is 2x faster. Looks like ffmpeg here has a very stupid seeking method. |
Performed some more testing around this.
The problematic file I create with virtualdub, xvid, quantization=1
It takes 8sec to seek & decode 100 random frames. It is interesting that before it can reach any video packet it is skipping 24 audio packets / 10 Megabytes of file content. But the ffprobe shows all the packets are interleaved 1 by 1... I am clueless.
[update] OMG this is how audio preloading works. Not using it fixes the file.
The comparison file I created with ffmpeg.exe -c:v mpeg4 -vtag DX50 -qscale:v 2 -g 0 -c:a pcm_s16le
It takes 1 sec for the same test (this is good result: better than vfw way).
Some interesting facts:
1) xvid at quantization 1 creates file twice bigger and slower for ffmpeg than ffmpeg utility. Changing quantization to 2 makes them equal. Didnt check visual quality.
2) remuxing virtualdub-created file with ffmpeg -c:v copy -c:a copy immediately fixes the thing with packet seeking
After these 2 fixes the test runs at normal speed (1 sec). |
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| shekh |
| Posted: Dec 16 2014, 07:18 PM |
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Fixed performance with skewed avi streams (see previous message)
Improved performance with all-keyframe files
Fixed spike in backward scan with P/B frame files
Minor fixes
Added warning to decrease process ahead buffers, the message is Cache overflow: set "Performance \ Video buffering" to 32 or less
Should be obvious enough and prevents frustration of corrupt output. |
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| dloneranger |
| Posted: Dec 16 2014, 07:54 PM |
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Some files load in this version with the wrong duration (about 2 to 12 frames long) vs the previous version
File information dialog shows correct length though (eg 20 minutes)
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| dloneranger |
| Posted: Dec 16 2014, 08:13 PM |
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Fails here in videosource initstream
if(trust_index){
sample_count = m_pStreamCtx->nb_index_entries;
trust_index is true and nb_index_entries is something low like 2 or 12
moving to the other branch (trust_index=false) gives a sample count much higher eg 16388
[edit]
there's also an occasional audio glitch/spike at the beginning of the videos
--------------------
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All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3 |
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| shekh |
| Posted: Dec 16 2014, 09:14 PM |
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Looks like it is the kind of video where there is index but it does not list all frames.
Have idea for workaround: compare #frames derived from duration vs from index.
Can you upload your sample?
[update]
Fixed |
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| dloneranger |
| Posted: Dec 16 2014, 09:27 PM |
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https://dl.dropboxusercontent.com/u/1702491...%281080p%29.mkv
almost all mkv's do it though
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| shekh |
| Posted: Dec 17 2014, 09:56 PM |
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| QUOTE (dloneranger @ Dec 16 2014, 08:13 PM) | there's also an occasional audio glitch/spike at the beginning of the videos
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How can I reproduce this audio defect? Is it persistent or random? |
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| dloneranger |
| Posted: Dec 17 2014, 10:12 PM |
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Seems random, but it's always right at the start
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All FccHandlers Stuff inc. Installers for acm codecs AAC, AC3, LameMp3 |
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| shekh |
| Posted: Dec 17 2014, 10:23 PM |
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Anyway please upload the sample where you see it
[update]
Fixed |
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