Check if a downloaded file is truncated

Connect and share knowledge within a single location that is structured and easy to search. I have a bunch of videos which I want to check if they are complete or not. Some of them may be downloaded partially, but they are not faulty. How can I efficiently check if these video are completely downloaded? I tried to use ffprobe and mediainfo. Should I use ffmpeg to read the whole files and compare the length of the videos to check if they are downloaded? Is there a better solution?

The command below instructs ffmpeg to read the input video and encode the video to nothing. During the encoding process, any errors such as missing frames are output to test. If a video file is not totally downloaded, there will be many lines in the test. For example,. In the example I gave above, I tested the entire file because the test video I downloaded was a torrent, which can have missing chunks throughout the file.

Adding -sseof to the list of arguments will check the last 60 seconds of the file, which is considerably faster. As there is technically no difference between a file wrongly not meeting the specs about file boundaries muxed and partially downloaded files, it is technically impossible to do the difference between a buggy file and a partially downloaded file.

Another advanced test could be done e. It is not implemented in MediaInfo but you can add a MediaInfo feature request. In all cases, it is very difficult to detect all partial downloads, because the total file size in not indicated in most video file formats so you can be sure a file is truncated, but you can not be sure a file is not truncated.

The only way to be sure you downloaded the complete file is to get the file size from somewhere else and better: have its hash e. I had a file where ffmpeg v3. Mediainfo did not show the file was truncated either. Only leaving out the -sseof would report any error with ffmpeg.

So I went back to trying ffprobe. It seemed slightly faster than ffmpeg. In the Run dialog box type the following:. If you are prompted for an administrator password or for a confirmation, type the password, or select Continue. If you are prompted to remove all the files that are associated with the printer, select Yes.

Select Add a printer or scanner , and then follow the instructions in the Add Printer Wizard to reinstall the printer driver. Verify that the strange behavior no longer occurs.

If the strange behavior persists, restart Windows, and then go to method 6. If the behavior persists, try to save the file in another file format.

Repeat step 1 to step 4, and then try to save the file in the following file formats, in the following order:. When you save files in the Plain Text. However, all document formatting, macro codes, and graphics are lost. Therefore, use the Plain Text.

Do not copy the section breaks because this might bring the damage into your new document. If the document appears to be truncated not all pages in the document are displayed , it might be possible to switch the document view and remove the damaged content from the document.

Determine the page number on which the damaged content is causing the document to appear to be truncated. If the document is corrupted and none of the previous methods work, try to recover its content by opening the document with Notepad. You may have to change the file type from "Text Documents. Select File , and then select Save As… Rename the document to make sure that you don't overwrite the damaged one.

Go back to Word and open the new document. Once in Word, you can clean it up and try to reapply the lost format. One of the main reasons for the truncated video files is not properly downloading or transferring the video files. As we all know, the VLC media player is one of the most versatile media players which comes with an inbuilt option to repair truncated MP4 or MOV video files. In order to fix your truncated video, follow the methods mentioned in the section below.

In most cases, the above-mentioned method will fix the truncated video file. In spite of following the above-mentioned methods, if you still have not fixed your truncated video file, you will need a reliable video repair tool to fix this issue.

This issue might usually occur due to header corruption. The tool is capable of fixing any type of video related to a related broken MP4 header or a corrupted MOV file effortlessly. Be it damaged, corrupted, or broken video files, Remo Video Repair Software with its sleek performance ensures quick fix of damaged or corrupted MP4. MOV or any videos irrespective of scenarios. The Video Repair Tool also fixes videos with audio-video sync issues or header corruption. Download now and try it!

Copy link. Any insights? Regarding the issue with truncation, a workaround that seems to work is this: updater. Thanks for the information, I'll review again the downloader code on this week. Actually I think the issue I reporting here is the same as this one: 58 The reason why the poster of 58 got it working is because he implemented downloadFile correctly. FIxed in v2. Sign up for free to join this conversation on GitHub.

Already have an account? Sign in to comment. Linked pull requests.