balrogg: lossless Vorbis/Opus recompressor

[kj911]

The test corpus is a bit problematic (and the net too, up: <20kB/s!), at least in terms of public and copyright.

The small samples are from ESB, I'm now testing this quickly to see how the program reacts to converting the entire 2-hour file to OGG. (Source It's in 256kbps AC3.) The problematic cases written in TXT occurred on the ANH audio. (It's in PCM as part of a 10+ GB MKV file.) What is questionable is whether the error appears depending on the given audio and/or just the time length. I also tested it on a 100+ minute OPUS file, without error. (With audio copied from a WEBM video, taken from a video hosting site.)

The conversion/copying was done using XMedia Recode 3.2.7.1 x86 (last XP-compatible release).

UPD: Infinite loop again!

Source: ESB / 2hr / 256kbps AC3

128kbps, Vorbis/ABR OGG via l1: Works!
128kbps, Quality (q4) OGG via l9: Infinite compression loop. Level4 works. (watch longer than 2-4minutes times the Windows Process Explorer.)

The errors you experienced can be easily reconstructed if you have ~2 hours (SW, etc...) of audio files and test all the OGG encoding settings that XMediaRecode allows when encoding audio files to OGG.

UPD2: Infinite loop = Various compression methods used, forced it??

First 10minutes piece from ANH audio, encoded to 128kbps/q4 OGG file: Memory fluctuation are present it avg. 8-12 or upto times (~18-24MB), compression finished! Default cases, 100MB's OGG handled it 1-2minutes times. And one compression steps. Level5 only two memory fluctuation and finished it 17 seconds. (5.8MB's OGG) Level1 in less than 2sec.

Other bugs, not easily reproducible. (packet ends/unpaired bits or any.)