CONVERT MKV TO MP4 FFMPEG WINDOWS WINDOWS

Could not find codec parameters for stream 8 (Subtitle: hdmv_pgs_subtitle): unspecified size

Could not find codec parameters for stream 7 (Subtitle: hdmv_pgs_subtitle): unspecified size Could not find codec parameters for stream 6 (Subtitle: hdmv_pgs_subtitle): unspecified size Could not find codec parameters for stream 5 (Subtitle: hdmv_pgs_subtitle): unspecified size

Could not find codec parameters for stream 4 (Subtitle: hdmv_pgs_subtitle): unspecified size Could not find codec parameters for stream 3 (Subtitle: hdmv_pgs_subtitle): unspecified sizeД¬onsider increasing the value for the 'analyzeduration' and 'probesize' options fmpeginfmpeg.exe -i -HD-7.1.x264.mkv -c:v copy -c:a aac -b:a 256k -HD-7.1.x264.mp4 >out.txt 2>&1ДЇfmpeg version N-79209-gb3eda69 Copyright (c) 2000-2016 the FFmpeg developersД¬onfiguration: -disable-static -enable-shared -enable-gpl -enable-version3 -disable-w32threads -enable-avisynth -enable-bzlib -enable-fontconfig -enable-frei0r -enable-gnutls -enable-iconv -enable-libass -enable-libbluray -enable-libbs2b -enable-libcaca -enable-libfreetype -enable-libgme -enable-libgsm -enable-libilbc -enable-libmodplug -enable-libmfx -enable-libmp3lame -enable-libopencore-amrnb -enable-libopencore-amrwb -enable-libopenjpeg -enable-libopus -enable-librtmp -enable-libschroedinger -enable-libsnappy -enable-libsoxr -enable-libspeex -enable-libtheora -enable-libtwolame -enable-libvidstab -enable-libvo-amrwbenc -enable-libvorbis -enable-libvpx -enable-libwavpack -enable-libwebp -enable-libx264 -enable-libx265 -enable-libxavs -enable-libxvid -enable-libzimg -enable-lzma -enable-decklink -enable-zlib

CONVERT MKV TO MP4 FFMPEG WINDOWS WINDOWS

Out mp4 plays ok in vlc but no audio in windows media. I'm not sure if there is a better way to post this. (audio streams usually start at stream 0:1 unless there are multiple video streams as well)ДЄlso, for what it's worth your ffmpeg syntax seems to work fine on my end though I'm not sure what ffmpeg is defaulting to for the aac encode (better to specify a bitrate or use a quality setting). mkv file to see how many audio streams the file has, & what codec they're using? Could help pinpoint the issue.

Speaking of ffprobe.exe / mediainfo, did you run it on the input. mp4 file & look for any audio streams (probably stream 0:1). Try running ffprobe.exe or mediainfo on the output. mp4 has an audio stream? If ffmpeg isn't erroring on you then it sounds like the encode is working properly. Also reference ffmpeg's aac encoding page.ДЄlso, are you already checking that the output. If you were using quality settings (instead of bitrate) as a test you could specify '-c:a aac -q:a 0'. Normally when people encode to another audio codec they usually include bitrate or quality settings like /u/El_Vandragon mentioned. In your ffmpeg syntax you're using '.mp4' in the output filename's extension, right? e.g.

Convert mkv to mp4 ffmpeg windows