By default stream 0 (the first audio track, usually the main mix). If your MKV carries commentary, dubs, or descriptive audio on additional tracks, the advanced "audio stream" picker lets you pick 1, 2, 3... explicitly. The track list is shown in the upload preview so you do not pick blind.
If the AC3 format is lossless (WAV, FLAC, ALAC), every original sample is preserved. If AC3 is lossy (MP3, AAC, OGG, Opus), the codec recompresses — at 192 kbps the difference is inaudible for most content; at 96 kbps you may hear cymbals or sibilants softening. The MKV container has no influence on this — only the codec settings matter.
Ya — fi pánẹ́ẹ̀lì fáìlì MKV lọ́wọ́lọ́wọ́ nínú ààyè ìṣàfihàn náà àtí a tí n pánẹ́ẹ̀lì ìṣàfihàn. Premium náà gba àwọn olùdarí ìṣàfihàn náà diẹ́ sii; nínú àwọn fáìlì 100-fáìlì (àwọn ìṣàmúlò-ètò orin-àwòrán) yìí ní ìfaràǹdégbèrè laarin àwọn ìsẹ̀tó 90 náà àtì àwọn ààyè 8.
Ìgbà wo nínú tí a bá gbá AC3 láti inú aago-1 MKV?
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Audio demux + transcode runs much faster than video re-encoding — typically 5-15% of source duration. A 1-hour MKV -> AC3 finishes in 3-9 minutes on the standard pipeline. If the AC3 codec matches the source codec already in the MKV (common for AAC inside MKV / MP4), it is a pure remux and runs in seconds.
Ya - àwọn ààyè ìdàjọ́ àìdájọ́ tí a lò nínú ìṣàfarawé. Àwọn oríṣí MKV àti àwọn ìjáde AC3 ní a tí n ṣẹ́gun nínú àwọn olùkọ́ àti àwọn ààyè àìpàlẹ̀. A kò fẹ́, fipamọ́, tàbí fi pọ̀ nínú àwọn ààyè. Wò /privacy/.
Kini idi ti mò ti ní àwọn ààyè ìtàjú àti àwọn àwòrán àìdájú nínú AC3 mìí?
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Almost always a stream-index mismatch — your MKV had a multi-track audio layout and we extracted the wrong stream (e.g. the silent descriptive audio track instead of the main mix). Re-run with the advanced "audio stream" option set to the right index, or pick "all streams" to extract every track as a separate AC3 file.
Àwọn àwọn àgbéwọlé AC3 lè jẹ́ stereo, mono, tàbí 5.1?
Ń bọ́ kọ̀ǹpútà tí a típàdé AC3 láti lo ní àwọn iPhone / Android / àwọn stereo ẹlẹ̀yàn ẹlẹ̀yàn?
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MP3 plays universally. AAC / M4A plays on Apple and most Android, including factory car stereos from 2014+. OGG / Opus needs a recent player and may not work in older infotainment systems. The advanced device-target dropdown picks the safest AC3 codec for the target you select.