I read on avconv docs that 'The mov/mp4/ismv muxer supports fragmentation. ffmpeg -i input -c:v libx264 -preset slow -crf 18 -vf yadif -strict -2 output.mp4 When file size is not an issue, this is a quick command that will produce a visually lossless H.264 encoding with an mp4 container. Even using conversion tools that put the 'mov atom' at the start of the file for quick streaming require that the entire mp4 be encoded before that happens. Reading the update log I looks like you have added a lot in terms of directly writing quicktime tags using exiftool. Converting to an mp4 is simple, however, the entire file must be converted first before it is usable. By default FFmpeg places the moov atom at the end of the MP4 file but it can place the mov atom at the beginning with the -movflags faststart option like this: ffmpeg -i video.webm -movflags faststart video.mp4 Using Levels and Profiles when encoding H. I then performed the exiftool step with the above line of code and it appears it is exiftool which is placing the moov atom at the start of the file and the mdat atom after it. I converted a video with ffmpeg as per normal and confirmed that the atoms remained in the same location as the original. After not having processed any videos for a month or two but after converting one the other week I realised this was no longer the case This way I was still able to add in meta information at the end of the moov atom without adjusting all the other offsets. Run the following Bash command: ffmpeg -v trace -i file. The program works even on MPEG-4 AAC-LC audio files with an. Previously using this method the mdat atom would remain at the start of the file and the moov atom would be at the end of the file. The way to do this using ffmpeg is described in this answer to another question. through a program called qt-faststart.exe to relocate the moov atom. Code Select Expand exiftool -overwrite_original -ExtractEmbedded -tagsFromFile !inputFile! -createdate -modifydate -trackcreatedate -trackmodifydate -mediacreatedate -mediamodifydate !outputFile!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |