Ich habe mir ein Facebook Story-Video runtergeladen. D.h. das hochgeladene Video wurde automatisch in 4 Teile aufgeteilt, manuell kann man sich die 4 Teile jeweils als Audio- und Video-Spur runterladen. Ich füge dann mit MkvToolnix jeweils Audio und Video zusammen, was problemlos funktioniert. Anschließend füge ich mit Avidemux die einzelnen Teile zusammen. Dies klappt meistens, aber nicht immer. Wenn es Probleme gibt, dann ist beim Abspielen das Video nicht flüssig, sondern irgendwann nur als Artefakte sichtbar.
Jetzt habe ich die Teile mit ffmpeg zusammengefügt und ich erhalte Fehlermeldungen, aus denen man vielleicht etwas herauslesen kann. Wann kann man da tun, um ein vernünftiges Ergebnis zu bekommen?
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[matroska,webm @ 0x55edabc5c100] File extends beyond end of segment. 854.8kbits/s speed=2.88x
[h264 @ 0x55edabc90740] left block unavailable for requested intra mode
[h264 @ 0x55edabc90740] error while decoding MB 0 0, bytestream 10423
[h264 @ 0x55edabc90740] concealing 3600 DC, 3600 AC, 3600 MV errors in I frame
[h264 @ 0x55edabc89f40] Cannot use next picture in error concealment
[h264 @ 0x55edabc89f40] concealing 3352 DC, 3352 AC, 3352 MV errors in P frame
[aac @ 0x55edabc8fa80] Queue input is backward in time
[h264 @ 0x55edabc96b40] concealing 2387 DC, 2387 AC, 2387 MV errors in B frame
[h264 @ 0x55edabd055c0] Cannot use next picture in error concealment
[h264 @ 0x55edabd055c0] concealing 3483 DC, 3483 AC, 3483 MV errors in P frame
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658444, current: 0; changing to 658445. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658445, current: 1024; changing to 658446. This may result in incorrect timestamps in the output file.
[h264 @ 0x55edabcdafc0] Reference 2 >= 2
[h264 @ 0x55edabcdafc0] error while decoding MB 37 17, bytestream 1479
[h264 @ 0x55edabcdafc0] concealing 2847 DC, 2847 AC, 2847 MV errors in B frame
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658446, current: 2050; changing to 658447. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658447, current: 3074; changing to 658448. This may result in incorrect timestamps in the output file.
[h264 @ 0x55edabc90740] Reference 2 >= 2
[h264 @ 0x55edabc90740] error while decoding MB 5 17, bytestream 754
[h264 @ 0x55edabc90740] concealing 2879 DC, 2879 AC, 2879 MV errors in B frame
concat:isa 1 148767785_259591692215069_826377259409950336_n.mkv|isa 2 147959263_1584468958418124_7278899414435347802_n.mkv: corrupt decoded frame in stream 0
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658448, current: 4098; changing to 658449. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658449, current: 5122; changing to 658450. This may result in incorrect timestamps in the output file.
concat:isa 1 148767785_259591692215069_826377259409950336_n.mkv|isa 2 147959263_1584468958418124_7278899414435347802_n.mkv: corrupt decoded frame in stream 0
[h264 @ 0x55edabc96b40] concealing 3441 DC, 3441 AC, 3441 MV errors in P frame
[h264 @ 0x55edabc89f40] concealing 2357 DC, 2357 AC, 2357 MV errors in B frame
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658450, current: 6151; changing to 658451. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658451, current: 7175; changing to 658452. This may result in incorrect timestamps in the output file.
concat:isa 1 148767785_259591692215069_826377259409950336_n.mkv|isa 2 147959263_1584468958418124_7278899414435347802_n.mkv: corrupt decoded frame in stream 0
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658452, current: 8199; changing to 658453. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658453, current: 9223; changing to 658454. This may result in incorrect timestamps in the output file.
concat:isa 1 148767785_259591692215069_826377259409950336_n.mkv|isa 2 147959263_1584468958418124_7278899414435347802_n.mkv: corrupt decoded frame in stream 0
Last message repeated 1 times
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658454, current: 10253; changing to 658455. This may result in incorrect timestamps in the output file.
[mp4 @ 0x55edabc62b00] Non-monotonous DTS in output stream 0:1; previous: 658455, current: 11277; changing to 658456. This may result in incorrect timestamps in the output file.
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