This shall be a short guide on how to upgrade to AviSynth+ while keeping your old scripts functional and making use of higher bit depths, based on my initial experiences.ġ. Luckily, I read today that AviSynth+ is actually very compatible with old plugins and upgrading to it is actually fairly easy. I've known for a while that AviSynth+ natively supports higher bit depths, but been always concerned that it may break compatibility with older plugins and scripts, which would be pretty stupid. The remultiplexing works flawlessly within Windows 7.Īny pointers would be greatly appreciated.Now that the age of HDR is here and also with x264 supporting 10 bit encoding, I've been annoyed by AviSynth's lack of support for bit depths above 8 bit per channel. My personal workaround is to dual boot with Windows 7 and use Virtualdub with its External Encoders within this operating system. I have returned frequently to this problem but never with any success. This does however produce a non-standard file although on most occasions it will play in in MPC-HC. No idea why!Īlternatively if the process is aborted, then the audio and video files may be multiplexed immediately into a single multimedia file using something like mkvtoolnix. On most occasions if the process isn't aborted, after an hour or more these two files are eventually remultiplexed. I realise that this is an old thread but I was wondering if anyone had yet found a solution to the problem between VirtualDub's external encoders and Windows 10.Īs already mentioned in the the thread the external encoders demultiplex the multimedia file and produce a video file and an audio file then the process stalls. I could understand what I talked about but it was not a pleasant voice. Regarding problem with Audio setting in saved settings: I used saved settings with Audio set to Full processing mode in Vdub FilterMod and changed Audio to Direct stream mode and made a short video with external encoder. Sometimes the three resulting files have merged by themself long after VDub has been closed. Big videos with 5000 frames will mostly not succed. Saving video without sound did not change anything. Later text about something stuck appears. Vdub FilterMod now shows: "Vdub in progress" The processing thread is busy and could not be suspended. I then made "dumb status" which is shown below: (Thread action stalled due to full pipe processing thread) Current adress 775ED1C "Dub processing thread has not cycled for 30 seconds - possible live lock. I have made "dump status" from processing windows when VDub is trying to end saving.įirst line in log which shows that something is wrong: I think I have a viable workaround that I can put into VirtualDub itself, but why this codec causes a lockup is an interesting question in itself.Ĭhange codecs, experiment with thread priority. Either renaming the driver file temporarily, uninstalling it, or lowering its priority in the Sounds and Audio Devices control panel so that another MP3 codec has priority will work around the problem. It comes with the software that ships with certain SoundBlaster Live! sound cards in particular, installing the Pla圜enter application will also install the codec. I recently found out which software triggers the problem and why - it's the Creative Labs MP3 codec (ctmp3.acm), and it's because of peculiar notifications being sent by that codec. This was very frustrating for me, because it was a long-standing issue that made my program unusable for some people, and which I couldn't fix. However, I could never find the culprit or reproduce the problem. I had initially assumed that this was a deadlock caused by thread synchronization issues, which wouldn't lock the UI because VirtualDub's UI runs in a separate thread, and this was reinforced by the livelock log messages in recent versions indicating that the audio thread was stuck in a system call. The program's UI was still responsive, so the application hadn't totally died, but the processing pipeline jammed up such that the render couldn't make any progress or be aborted (a " livelock"). For years, I've been receiving reports about a mysterious problem with VirtualDub hanging during a save operation.
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